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MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING ( { miscellaneous implements for preparing food, e.g. machines for domestic use for mixing, egg-whisks, cream beaters A47J 43/00} ; mixing paints B44D 3/06; { apparatus specially adapted for mixing radioactively contaminated material G21F 9/008} )
Definition statement
This subclass/group covers:

Agitation and/or homogenization of products formed by a combination of two or more components with the purpose of obtaining an homogeneous composition or homogeneous conditions in the mass of material.

Stirring of a single material with the purpose of obtaining homogeneous conditions in the mass of material.

This subclass covers the mixing, agitation and homogenization of materials, irrespective of the application in which it is produced, whenever the device and/or method is directed to achieve said desired effect.

References relevant to classification in this subclass
This subclass/group does not cover:
Disinfection, sterilisation or deodorisation of air
Evaporation
Distillation
Reactors
Granulation (with or without coating)
Crushing, pulverising, disintegrating
Flotation
Spraying, atomising
Air-conditioning, air-humidification, ventilation
Drying
Heat-exchange apparatus in which the heat-exchange media are contacted, e.g. cooling towers
Special rules of classification within this subclass

In general, devices and methods in which agitation and or contact of materials is produced, the object of said agitation/contact being different than for obtaining an homogeneous mixture (e.g. mass transfer devices and processes, a mere contact of two or more different materials, devices or processes in which agitation/homogenization is intrinsic to the process per se but it is not the primary purpose) are not classified in this subclass.

As a general rule, the following information is to be classified in its whole extent:

What is mixed, i.e. the phases of materials being mixed: groups B01F 1/00 and B01F 3/00.

How it is mixed: groups B01F 5/00, B01F 7/00, B01F 9/00, B01F 11/00 and B01F 13/00.

Auxiliary information: groups B01F 15/00.

The use of substances used as emulsifying, wetting, dispersing or foam-producing agents is normally only classified in B01F 17/00, except when the related devices for mixing are also disclosed.

With regard to the phases to be mixed, the following is to be observed:

- when only a general reference to the phases is indicated, only the Indexing Codes B01F 1/00 and B01F 3/00 are used;

- if reference is made to the use of the device for any kind of mixtures, it is not classified in B01F 1/00, B01F 3/00, B01F 1/00 or B01F 3/00;

- when the application is of relevance (i.e. the type of product produced is claimed or the device is claimed for making a specific product) then it is also classified in the corresponding application field;

- if the possible application or applications are only mentioned in a generic way (i.e. as possible uses of the device) then the corresponding KW is used instead.

With regard to the way of mixing all parts of the device which are used for mixing are classified in its corresponding group. When more than one mixing device form part of the apparatus, the device is also classified in B01F 13/10.

With regard to the auxiliary information the corresponding general fields, if they exist, take precedence. If the only possible classification symbol which can be allocated is a symbol in the group B01F 15/00 then it has to be classified in the general field (e.g. if it can only be classified in B01F 15/06 then it is a clear indication that it has to be classified in F28).

Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:
Mixing
stirring of a single material
Dissolving ( {without involving chemical reactions; B01F 3/04099 takes precedence;} separating by dissolving B01D; dissolving to effect cooling F25D 5/00)
Definition statement
This subclass/group covers:

Dissolving of a solid in a liquid in which no chemical reaction is involved (e.g. dissolving salt in water).

Informative references
Attention is drawn to the following places, which may be of interest for search:
Preparation of beverages
Addition of cleaning agents in dishwashers
Preparation of dialysates
Dosing solid additives for water treatment
C01F1/68
Addition of cleaning agents in washing machines
Preparation of brine for roads
Dosing solid additives in swimming-pools
Special rules of classification within this group

Mixing of a solid with a liquid for preparing dispersions or slurries, i.e. when the solid is not chemically dissolved in the liquid (e.g. a coal slurry) is not classified in this group.

{Methods}
Special rules of classification within this group

Methods for dissolving a solid in a liquid which is only suited for dissolving a specific solid and which is not based on the use of mechanical devices (i.e. specific process recipes for dissolving a specific component, said recipe not being suited for dissolving any other solid) are not classified in this group.

{comprising constructions for blocking or redispersing undissolved solids, e.g. sieves, separators, guiding constructions (B01F 1/0033 takes precedence) }
Definition statement
This subclass/group covers:

elements used for blocking undissolved solids, e.g. used as filters at the outlet of the container where the solid is being dissolved. Example:

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Mixing, e.g. dispersing, emulsifying, according to the phases to be mixed { (C08J 3/02 takes precedence) }
Definition statement
This subclass/group covers:

Devices in methods for mixing in which the phases of the materials to be mixed are of relevance.

References relevant to classification in this subclass/group
This subclass/group does not cover:
Making solutions, dispersions or latices by other methods than by solution, emulsion or suspension polymerisation techniques
Special rules of classification within this group

With regard to the phases to be mixed, the following is to be observed:

- when only a general reference to the phases is indicated, only the Indexing Codes B01F 1/00 and B01F 3/00 are used;

- if reference is made to the use of the device for any kind of mixtures, it is not classified in B01F 1/00, B01F 3/00, B01F 1/00 or B01F 3/00;

- when the application is of relevance (i.e. the type of product produced is claimed or the device is claimed for making a specific product) then it is also classified in the corresponding application field;

- if the possible application or applications are only mentioned in a generic way (i.e. as possible uses of the device) then the corresponding KW is used instead.

gases with gases or vapours { (for preparing respiratory gases or vapours A61M 16/12) }
Definition statement
This subclass/group covers:

Mixing of two or more gases in which mixing devices are used for homogenizing the mixture.

References relevant to classification in this group
This subclass/group does not cover:
Storage and distribution of gases
Ventilation
Special rules of classification within this group

Generally, the mere contact of two or more gases for producing a specific composition when no mixing devices are used for actively homogenizing the mixture is not classified in this group.

{with moving mixing elements, e.g. with liquid seal (B01F 3/022 takes precedence) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{Mixing systems, i.e. flow charts or diagrams; Arrangements, e.g. comprising controlling means}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{characterised by the construction of the controlling means}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{Introducing a liquid into a gaseous medium, e.g. preparation of aerosols (for air-conditioning F24F 6/00) }
Definition statement
This subclass/group covers:

Introducing a liquid into a gas for obtaining a dispersion of droplets of liquid in the gas, wherein the gas is not merely used as a carrier but it is one of the components of the mixture, e.g. mixing of a reducing agent (e.g. ammonia) with a flue gas (the gas does not act as a mere carrier).

Special rules of classification within this group

Introduction of a liquid in a gas, the gas acting as a mere carrier or as means for braking a stream of liquid into droplets, e.g. for spraying of the liquid, is not classified in this group.

{using rotating elements, e.g. rolls, brushes}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group (EP1319435):

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{for spraying the liquid radially by centrifugal force}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{using nozzles}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{using a gas-liquid mixing column or tower (absorbing units for separating gases or vapours B01D 53/18) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{ Introducing a gas or vapour into a liquid medium, e.g. producing aerated liquids (methods for the preparation of non-alcoholic beverages, e.g. of carbonated water A23L 2/00; bottling liquids, e.g. combined with aerating or carbonating B67C 3/00; dispensing beverages on draught combined with carbonating B67D 1/0057, B67D1/02B, B67D1/04A, B67D 1/0418; dispensing beverages by gas pressure from storage containers, e.g. syphons B67D 1/04; biological treatment of water, waste water or sewage C02F 3/00; impregnating wine with carbon dioxide C12G 1/06; gas introduction means for enzymology or microbiology apparatus C12M 1/04) }
Informative references
Attention is drawn to the following places, which may be of interest for search:
Water treatment
Apparatus for enzymology or microbiology
{the gas being introduced by bubbling, e.g. within receptacles or tanks (B01F 3/04531, B01F 3/04787 take precedence; introducing gas for agitation only B01F 13/02) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{Arrangement or manipulation of the gas bubbling devices}
Definition statement
This subclass/group covers:

Ways of arranging the bubbling elements within the basin or receptacle (e.g. forming a network, on grids, etc.) and elements for manipulating the bubbling elements (e.g. for introducing/elevating them in/from the basin or receptacle).

Examples:

- Characterized by the disposition of the bubbling elements:

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- Characterized by means for the manipulation of the bubbling elements:

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{Mounting the bubbling devices or the diffusers (B01F 3/04241 takes precedence) }
Definition statement
This subclass/group covers:

Details relating the specific mounting of the diffuser elements on the piping system or within the basin or receptacle. Example:

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References relevant to classification in this subclass/group
This subclass/group does not cover:
Diffusers
{Diffusers}
Definition statement
This subclass/group covers:

Features related to the nature of the diffuser element, i.e. the mounting of the diffusor elements per se, the shape and the nature of the bubbling element.

Examples:

Characterized by the way in which the bubbling element is assembled:

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Characterized by the shape of the bubbling element, e.g. boxes, discs, domes, plates, rings, coiled tubes, stacked elements, tubes, membranes, etc.

Characterized by elements for protecting the bubbling elements.

Characterized by the material with which the diffuser is made, e.g. biocide material, material comprising means for gas storage.

{having injection means, e.g. nozzles with circumferential outlet}
Definition statement
This subclass/group covers:

Diffusers wherein the gas is fed through injection means, e.g. nozzles. Example:

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{having elements opening under air pressure, e.g. valves}
Definition statement
This subclass/group covers:

Diffusers wherein the gas is fed through mechanical elements which open under air pressure.

Example:

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{consisting of rigid porous or perforated material}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{consisting of flexible porous or perforated material, e.g. fabric}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{Making foam (for cocoa products A23G 1/105; for sweet meats A23G 3/0221; for fire-extinguishing foam A62C 5/02; spray pistols for making foam B05B 7/0018; foam used in forming crevices or fractures for stimulation of oil production E21B 43/26) }
Definition statement
This subclass/group covers:

Devices and methods for producing foam by mixing a gas and a liquid (including, e.g., a foaming agent) using mechanical means. Example:

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{using flow mixing means for introducing the gas, e.g. in conduits or in vessels (B01F 3/04106, B01F 3/0876 take precedence; distillation in which liquids are contacted with gaseous media B01D 3/00; jet regulation with aerating means for fresh water plumbing installations E03C 1/084) }
Definition statement
This subclass/group covers:

Means for mixing a gas with a liquid using flow mixing means other than by merely bubbling elements.

Example:

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Special rules of classification within this group

The specific flow mixer used must be classified accrodingly (e.g. in the corresponding mixing means described in main group B01F 5/02).

{by moving liquid and gas in counter current (absorbing units for separating gases or vapours B01D 53/18; in heat exchange apparatus F28C 3/06) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{the liquid flowing in a thin film to absorb the gas (fractional distillation with fractionating columns in which vapour bubbles through liquid B01D 3/16) }
Definition statement
This subclass/group covers:

Examples:

The thin film flowing horizontally or inclined:

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The thin film flowing vertically:

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{using columns, e.g. multistaged columns}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{by circulating the flow in guiding constructions or conduits}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{being at least partially immersed in the liquid, e.g. in a closed circuit (B01F 3/04602 takes precedence) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{The conduits being vertical draft pipes with a lower intake end and an upper exit end}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{using driven stirrers with completely immersed stirring elements (B01F 3/04453 takes precedence; surface aerating with stirrers near to the surface B01F 3/04765; flotation machines B03D 1/16) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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characterised by the introduction of the gas along the axis of the stirrer or along the stirrer elements
Definition statement
This subclass/group covers:

Driven stirrers with associated gas introduction means (e.g. through the shaft, through a tube parallel or surrounding the shaft, etc.). Example:

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{the stirrer rotating about a horizontal axis; Stirrers therefor }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{Single stirrer-drive aerating units, e.g. with the stirrer-head pivoting around an horizontal axis}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{provided with stationary guiding means surrounding at least partially the stirrer}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{with tubes surrounding the stirrer}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{the stirrer being of the centrifugal type, e.g. with a surrounding stator}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{Surface aerating, e.g. by cascading, spraying or projecting a liquid into a gaseous atmosphere (direct-contact heat exchange apparatus, the heat-exchange media being a liquid and a gas or a vapour F28C 3/06) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media33.png

{with stirrers near to the liquid surface, e.g. partially immersed, for spraying the liquid in the gas or for sucking gas into the liquid, e.g. using stirrers rotating around a horizontal axis or using centrifugal force}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{the stirrers rotating about a vertical axis}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{Stirrers therefor}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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Special rules of classification within this subclass/group

When the design of the stirrer is of relevance, it is to be classified also here.

{Apparatus for aerating or carbonating beverages (B01F 3/0446, B01F 3/04978 take precedence; using effervescence-generating compositions, e.g. carbon dioxide tablets A23L 2/40) }
Definition statement
This subclass/group covers:

Devices for aerating and/or carbonating beverages in which the way of introducing the gas and homogenizing the mixture is of relevance. Example:

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References relevant to classification in this group
This subclass/group does not cover:
Dispensers for beverages in draught
Special rules of classification within this group

General construction details of a beverage producing machine (e.g. cooling group, dispensing means, general construction of the machine) are not classified in this group.

{for aerating or carbonating beverages within containers, e.g. bottles}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{Portable appliances comprising a gas cartridge}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{for aerating or carbonating within receptables or tanks, e.g. distribution machines (B01F 3/04794 takes precedence) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{Mixing systems, i.e. flow charts or diagrams; Arrangements, e.g. comprising controlling means}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{Parts; Accessories}
Definition statement
This subclass/group covers:

Illustrative examples of subject matter classified in this group.

Parts:

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Accessories:

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{Mixing systems, i.e. flow charts or diagrams}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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gases or vapours with solids
References relevant to classification in this group
This subclass/group does not cover:
Pneumatic transport of solids in bulk
{Emulsifying (homogenising milk A01J 11/16; for adding a water-fuel emulsion in engine-pertinent apparatus F02M 25/0228; for preparing emulsion of liquid fuel with other fluid(s) for feeding combustion apparatus F23K 5/12) }
Definition statement
This subclass/group covers:

Devices and methods for producing emulsions by means of stirring means.

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References relevant to classification in this group
This subclass/group does not cover:
Cosmetics
A61K7/00
Medical compositions
Use of substances as emulsifying agents (in general)
Special rules of classification within this group

The specific type of mixer is to be classfied accordingly, i.e. in B01F 5/00, B01F 7/00, B01F 9/00, B01F 11/00 and B01F 13/00. Specific details are to be classified in B01F 15/00.

Methods (and devices) in which the emulsifying process is specific for the production of a specific product and it is performed on the base of a "recipe" (i.e. steps involving the order of addition of the materials, temperature/pressure conditions, specific type of products with specific compositions, etc.), in which a mechanical homogenizing step is of no or little reference are not classified in this group. Also the production of specific compounds in the form of emulsion are classified in the related application and not here.

{Mixing liquids using driven stirrers}
Special rules of classification within this group

The specific type of driven stirrer is to be accordingly classified in B01F 7/00, B01F 9/00, B01F 11/00 or B01F 13/00.

{Mixing liquids using flow mixing}
Special rules of classification within this group

The specific type of flow mixer is to be accordingly classified in B01F 5/00.

{by uniting flows taken from different parts of a receptacle or silo; Sandglass-type mixing (for particulate material B01F 5/24) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{by moving the liquids in countercurrent}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{by injecting a mixture of liquid and gas}
Definition statement
This subclass/group covers:

The mixing of a stream or body of a gas containing liquid with another stream or body of liquid. Example:

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{using a receptacle provided at its bottom discharge opening with oscillating or vibrating opening and closing elements, or with elements fitted on moving chains}
Definition statement
This subclass/group covers:

Vibrating elements located in the bottom discharge opening of a receptacle with mixing elements for homogenizing the mixture of solids as it is discharged from the container.

Example:

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References relevant to classification in this group
This subclass/group does not cover:
Elements for improving the discharge of containers or silos, preventing bridge formation
{using rotatable mixing elements at the lower end of discharge hoppers}
Definition statement
This subclass/group covers:

Rotatable elements located in the bottom discharge opening of a receptacle with mixing elements for homogenizing the mixture of solids as it is discharged from the container. Example:

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References relevant to classification in this group
This subclass/group does not cover:
Elements for improving the discharge of containers or silos, preventing bridge formation
Pretreatment of the materials to be mixed { (B28C 5/404, B29B 7/905 take precedence) }
Definition statement
This subclass/group covers:

Treatment of the materials to be fed to the mixer, e.g. heating, cooling, drying, grinding, irradiating, sieving always in combination with the mixing device or method.

References relevant to classification in this group
This subclass/group does not cover:
Pre-treatment of fibres
Pre-treatment of fibres with means for pretreatment of the charges or fibres]
Special rules of classification within this group

The specific treatments per se are not classified here (i.e. when said operation is the relevant information). Said specific operations are covered by the corresponding general field.

Aftertreatment of the mixture
Definition statement
This subclass/group covers:

Treatment of the product discharged from the mixer, e.g. heating, cooling, drying, grinding, irradiating, sieving always in combination with the mixing device or method.

Special rules of classification within this group

The specific treatments per se are not classified here (i.e. when said operation is the relevant information). Said specific operations are covered by the corresponding general field.

Flow mixers (sprayers, atomisers B05B) ; Mixers for falling materials, e.g. solid particles (B01F 13/04 takes precedence; centrifugal mixers B04)
Definition statement
This subclass/group covers:

The mixing of materials by means of flow mixers, e.g. without using driven mechanical elements (i.e. using passive mixing elements).

This group also covers pumps used for mixing purposes.

References relevant to classification in this group
This subclass/group does not cover:
Mixers combined with safety devices
Special rules of classification within this group

Where existing, classification must be made in the EC class for invention related information, or in the Indexing Code for additional information.

{ Mixing by creating a vortex flow, e.g. by tangentially introducing jets (apparatus using free vortex flow in general B04C) }
Definition statement
This subclass/group covers:

Illustrative examples of subject matter classified in this group.

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{Characterised by the arrangement of the discharge opening}
Definition statement
This subclass/group covers:

Vortex mixer in which the discharge of the mixing chamber is located in a specific way so as to influence the movement of the material within the chamber.

Example:

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{Mixing heads, i.e. compact mixing units or modules, using mixing valves for feeding and mixing at least two components (for homogenizing mixtures B01F 5/0661, mixing valves F16K 11/00) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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Jet mixers { (B01F 5/0057 take precedence; with gas agitation, i.e. for fluidisation B01F 13/02) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{comprising submerged injectors, e.g. nozzles, for injecting high pressure jets in a large volume or in a mixing chamber (B01F 3/04106 takes precedence; injecting an additional component in a conduit B01F 5/0403) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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References relevant to classification in this group
This subclass/group does not cover:
the gas being introduced by bubbling
{the injectors being surrounded by guiding tubes}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{the injectors being movable, e.g. rotating}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{Mixing by intersecting jets (in a stream-impingement mixing head for polymers B29B 7/76) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{Mixing by jets impinging against a collision plate}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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Injector mixers, {i.e. one or more components being added to a flowing main component (B01F 5/0057 takes precedence) }
Definition statement
This subclass/group covers:

The mixing of components in which a component is added to another component constituting the main component.

References relevant to classification in this group
This subclass/group does not cover:
Mixing by creating a vortex flow
{the additional component being axially fed and radially discharged through a circumferential outlet}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{with additional mixing means other than injector mixers, e.g. screens, baffles or rotating elements}
Special rules of classification within this group

The additional mixing means (located either before or after the venturi device) is to be accordingly classified.

{with additional mixing means other than injector mixers, e.g. screens, baffles or rotating elements}
Special rules of classification within this group

The additional mixing means (located either before or after the injection device) is to be accordingly classified.

{with additional mixing means other than injector mixers}
Special rules of classification within this group

The additional mixing means (located either before or after the injection device) is to be accordingly classified.

{a difference of pressure at different points of the conduit provoking introduction of the additional component into the main component (B01F 5/0496 takes precedence) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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References relevant to classification in this group
This subclass/group does not cover:
Flow mixers having a container for the additional component fixed to the conduit
{having a container for the additional component fixed to the conduit}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{the additional component being added in a by-pass of the main flow (B01F 5/0496, B01F 5/106 take precedence) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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References relevant to classification in this group
This subclass/group does not cover:
having a container for the additional component fixed to the conduit
the mixture being discharged from and reintroduced into a receptacle through a recirculation tube into which an additional component is introduced
Mixers in which the components are pressed together through slits, orifices, or screens; { Static mixers; Mixers of the fractal type} ( {B01F 7/164, B01F 7/225 take precedence;} turbo-mixers B01F 5/16; colloid-mills B02C; mixing valves F16K 11/00)
Definition statement
This subclass/group covers:

The homogenization of a stream composed by two or more components or the homogenization of the properties of a stream formed by a single component but with non-homogeneous conditions (e.g. layers with different temperature).

The different components are already in contact, the mixing elements being directed to homogenize the stream.

{Static mixers, i.e. mixers in which the mixing is effected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions (B01F 5/0661, B01F 5/0682 take precedence) }
Definition statement
This subclass/group covers:

The mixing of components by change of direction, splitting-recombining of the stream, etc. wherein the shear introduced in the stream is negligible (i.e. the mixing is not based on high shear effect).

References relevant to classification in this group
This subclass/group does not cover:
Mixers in which the components are pressed through slits while introducing shear,
Mixers in which the components are pressed together through screens, plates provided with orifices, foam-like inserts, or through a bed of loose bodies, e.g. beads
{the mixture or the components moving in an irregular path, e.g. radially (B01F 5/0646 takes precedence) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{ the mixer being composed of stacked plates between which the material is moving, e.g. the plates being provided with grooves or orifices}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{Straight mixing tubes, e.g. with smooth walls, having baffles or obstructions therein without substantial pressure drop; Baffles therefor (for falling-particle mixers B01F 5/246) }
Definition statement
This subclass/group covers:

Mixers constituted by baffle elements located inside a tube.

{the baffles being adjustable}
Definition statement
This subclass/group covers:

Illustrative examples of subject matter classified in this group

With active means for adjusting the position of the baffles:

media68.png
With passive means

With passive means for adjusting the position of the baffles:

media69.png

{comprising a plurality of stacked ducts having their axes parallel to the tube axis}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media70.png

{the baffles being helical elements}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media71.png

{composed of consecutive sections of helical formed elements}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media72.png

{the baffles being made by deforming flat pieces of material, e.g. by bonding , folding, deep drawing (B01F 5/0614 takes precedence) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media73.png

References relevant to classification in this subclass/group
This subclass/group does not cover:
the baffles being helical elements
{composed of consecutive sections of deformed flat pieces of material}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media74.png

{the baffles being flat pieces of material, e.g. intermeshing, fixed to the wall, fixed on a central rod}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media75.png

{composed of consecutive sections of flat pieces of material}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media76.png

{with means for dividing a flow of material into separate subflows and for repositioning and recombining these subflows; Cross-mixing, e.g. conducting the outer layer of the material nearer to the axis of the tube or vice-versa (B01F 5/0496 takes precedence; using baffles B01F 5/061, for falling particle mixers B01F 5/246) }
Definition statement
This subclass/group covers:

Mixers in which a stream comprising two or more components is subdivided in two or more substreams, said substreams being e.g. reoriented and the substreams are recombined.

Example:

media77.png

References relevant to classification in this subclass/group
This subclass/group does not cover:
Flow mixers having a container for the additional component fixed to the conduit
{the subflows consisting of at least two flat layers which are recombined, e.g. using means having restriction or expansion zones}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media78.png

{essentially composed of stacks of sheets, e.g. corrugated sheets}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media79.png

Special rules of classification within this group

If the material is intended to flow, mainly, through the pores, then it is classified in B01F 5/0691

{using elements provided with a plurality of channels or using a plurality of tubes which can either be placed between common spaces or collectors}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media80.png

{the channels or tubes crossing each other several times}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media81.png

{Mixers composed of several consecutive mixing tubes; Mixing tubes being deformed or bent, e.g. having varying cross-section or being provided with inwardly extending profiles, e.g. with internal screw-thread profile (B01F 5/0656 takes precedence) }
Definition statement
This subclass/group covers:

Illustrative examples of subject matter classified in this group.

Bent tubes or coiled elements:

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media83.jpg

media84.jpg

media85.jpg

Strong change of direction:

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Scallop shape:

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Converging/diverging sections:

media88.png

Undulating conduit (i.e. a succession of converging-diverging sections):

media89.png

{ Mixing tubes having therein a cylindrical or conical insert provided with grooves, e.g. the tube being provided with inwardly extending profiles or grooves (B01F 5/0665 takes precedence) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media90.png

{Mixing tubes composed of concentric tubular members (pressing the components through tubular members provided with orifices B01F 5/0682) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media91.png

References relevant to classification in this subclass/group
This subclass/group does not cover:
Mixers in which the components are pressed together through screens, plates provided with orifices, foam-like inserts, or through a bed of loose bodies, e.g. beads
{with movable slits formed between reciprocating surfaces (with movable slits formed between stator-rotor or two rotor systems B01F 7/0075, B01F 7/0085, B01F 7/1625) }
Definition statement
This subclass/group covers:

The mixing of components wherein the material flows through slits left between two elements which can be reciprocatelly adjusted. Example:

media92.jpg

{Mixers in which the components are pressed through slits while introducing shear, e.g. the slits being formed by balls and their seats, by the spiros of helical springs (B01F 7/0075 takes precedence) }
Definition statement
This subclass/group covers:

The mixing of components wherein the materials are flown through slits with the introduction of high shear forces.

Example:

media93.png

References relevant to classification in this subclass/group
This subclass/group does not cover:
the mixer being composed of a stator-rotor system with movable slits between surfaces facing each other
{ the slits being formed between opposed planar surfaces, e.g. pushed again each other by springs}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media94.png

{ the slits being formed between opposed conical or cylindrical surfaces}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media95.png

{Mixers in which the components are pressed together through screens, plates provided with orifices, foam-like inserts, or through a bed of loose bodies, e.g. beads (B01F 7/0075 takes precedence) }
Definition statement
This subclass/group covers:

The mixing of components by making them flow through orifices, the shear introduced in the stream being relevant for the homogenization process.

Examples:

Plates with orifices:

media96.png

Cylinder with orifices:

media97.png

Porous elements (cylinders or plates):

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Sieve elements (cylinders or plates):

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References relevant to classification in this subclass/group
This subclass/group does not cover:
the mixer being composed of a stator-rotor system with movable slits between surfaces facing each other
Circulation mixers, {e.g. at least part of the mixture being discharged from, and reintroduced into, a receptacle, e.g. with rotary stirrer (B01F 5/02 takes precedence) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media101.png

References relevant to classification in this subclass/group
This subclass/group does not cover:
Jet mixers
{the mixture being circulated during mixing through a set of tubes, e.g. involving gradually introducing a component into a circulating flow}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media102.png

{provided with rotary stirrer}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media103.png

{the mixture being discharged from and reintroduced into a receptacle through a recirculation tube into which an additional component is introduced}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media104.png

Spray-mixers; {Mixing intersecting sheets of material, e.g. conical liquid sheets (B01F 3/0473, B01F 7/022, B01F 9/025 take precedence) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media105.png

References relevant to classification in this subclass/group
This subclass/group does not cover:
Surface aerating
Mixers with rotary stirring devices in fixed receptacles comprising liquid feeding
Mixers with rotating receptacles comprising liquid spraying devices
Special rules of classification within this group

The spray can be in the form of a "tubular" jet/spray or in the form of a "two-dimensional" sheet.

with nozzles { (B01F 3/04049 takes precedence; nozzles per se B05B 1/00) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media106.png

References relevant to classification in this group
This subclass/group does not cover:
Mixing using nozzles
{for spraying a fluid on falling particles or on a liquid curtain}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media107.png

with rotary {parts, e.g.} discs { (B01F 3/04035, B01F 7/0075 take precedence) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media108.png

References relevant to classification in this group
This subclass/group does not cover:
For spraying the liquid radially by centrifugal force
The mixer being composed of a stator-rotor system with movable slits between surfaces facing each other
{with a disc or a set of discs mounted on a shaft rotating about a vertical axis, on top of which the material to be thrown outwardly is fed}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media109.png

{with repeated action, i.e. the material thrown outwardly being guided, by means provided on the surrounding casing, on top of the next lower disc}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media110.png

{for spraying a liquid on falling particles or on a liquid curtain (B01F 5/223 takes precedence) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media111.png

References relevant to classification in this subclass/group
This subclass/group does not cover:
Flow mixers with repeated action
{the material being fed on both sides of a part rotating about a vertical axis}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media112.png

{the rotating part being composed of at least two cooperating members rotating independently about the same vertical axis}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media113.png

{Particle mixers uniting flows of material taken from different parts of a receptacle or from a set of receptacles (for liquids B01F 3/0869; devices for emptying containers from the top with vertical passage located inside the containers B65G 65/365) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media114.png

References relevant to classification in this group
This subclass/group does not cover:
For liquids
Devices for emptying containers from the top with vertical passage located inside the containers
{by means of conduits having inlet openings at different levels}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media115.png

{by means of a central conduit or central set of conduits}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media116.png

{the receptacle being divided into compartments for receiving or storing the different components}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media117.png

{Flow collectors therefor}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media118.png

{Falling-particle mixers comprising receptacles provided with fixed guiding elements, e.g. baffles, therein; Cross-mixers comprising crossing channels for guiding the falling particles}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media119.png

{Falling-particle mixers comprising superimposed receptacles, the material flowing from one to the other, e.g. of the sandglass type (for liquids B01F 3/0869) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media120.png

References relevant to classification in this group
This subclass/group does not cover:
For liquids
{the particles falling on a film flowing along the inner wall of a mixer}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media121.png

Falling-particle mixers with moving {or vibrating} means, e.g. stirrers, for increasing the mixing { (B01F 5/24 takes precedence) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media122.png

References relevant to classification in this subclass/group
This subclass/group does not cover:
Falling-particle mixers, [N: e.g.] with repeated action
using one central conveyor or several separate conveyors, e.g. belt or screw conveyors, vibrating tables, for discharging flows from receptables, e.g. in layers
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media123.png

Mixers with rotary stirring devices in fixed receptacles, {i.e. movement of the receptacle not being meant to effect the mixing (B01F 13/08 takes precedence) } ; Kneaders (B01F 13/04 takes precedence; {devices especially adapted for mixing foundry sand B22C 5/04} )
Definition statement
This subclass/group covers:

The mixing of materials by means of rotary stirring devices.

References relevant to classification in this group
This subclass/group does not cover:
The mixing of materials by means of moveable stirrers, said movement not being a rotating movement or which are subjected to an additional oscillatory movement
Magnetic mixers
Mixers combined with safety devices
Devices especially adapted for mixing foundry sand
Special rules of classification within this group

Where existing, classification must be made in the EC class for invention related information, or in the Indexing Code for additional information.

{ Stirrers, i.e. rotary stirring devices (B01F 3/04539, B01F 3/04588, B01F 3/0478, B01F 7/028, B01F 11/0091 take precedence) }
Definition statement
This subclass/group covers:

Specific details of rotary stirrers, i.e. their constructional details and geometric design either not covered by the subgroups B01F 7/02 and B01F 7/16 or details of the stirrers not linked to a specific orientation within a container.

References relevant to classification in this subclass/group
This subclass/group does not cover:
The stirrer rotating about a horizontal axis; Stirrers therefor
Stirrers therefor
Mixers with rotary stirring devices in fixed receptacles provided with buckets
Stirrers constructions
{ with mechanical means to alter the position of the stirring elements}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media124.png

{ deformable by centrifugal force}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media125.png

{ the position of the stirring elements depending on the direction of rotation of the stirrer}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media126.png

{ Fixing of the stirrer to the shaft}
Definition statement
This subclass/group covers:

Details for attaching the mixing elements to the rotating shaft.

Informative references
Attention is drawn to the following places, which may be of interest for search:
Devices for fastening or securing constructional elements or machine parts together
{ with stirring elements moving with respect to the stirrer shaft, e.g. floating or comprising contracting chambers}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media127.png

{ with arms, paddles, vanes or blades}
Definition statement
This subclass/group covers:

Stirrers producing a flow with a radial component.

{ Propellers, i.e. stirrers having an axial outflow, e.g. of the ship or aircraft propeller type or having means on the propeller to guide the flow}
Definition statement
This subclass/group covers:

Stirrers producing an axial movement on the flow.

{ ribbon shaped, i.e. with an open space between the helical ribbon flight and the rotating axis}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media128.png

{ forming open frameworks or cages}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media129.png

{ with rigid wires or flexible rods}
Definition statement
This subclass/group covers:

Illustrative examples of subject matter classified in this group.

media130.png

media131.png

{ with a bent rod of non helical configuration supported at one end }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media132.png

{ Openwork frame or cage stirrers not provided for elsewhere}
Definition statement
This subclass/group covers:

Illustrative examples of subject matter classified in this group.

media133.png

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media135.png

{ provided with tubes for guiding the material}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media136.png

{ provided with a plurality of similar elements}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media137.png

{ provided with a plurality of dissimilar elements}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media138.png

{ comprising helical elements and paddles}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media139.png

{ The axis being a flexible shaft}
Informative references
Attention is drawn to the following places, which may be of interest for search:
Flexible shafts
{ The axis comprising stirring means and feeding or discharging means fixed on the same axis}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media140.png

Informative references
Attention is drawn to the following places, which may be of interest for search:
Mixers for cement
{ Connection of the rotating axis with the drive}
Definition statement
This subclass/group covers:

Details for attaching the rotating shaft to the drive unit.

References relevant to classification in this group
This subclass/group does not cover:
Couplings for connecting two shafts together
{Submerged mixers, i.e. with a submerged stirrer and drive unit, e.g. displaceable on a vertical beam (submerged stirring devices for introducing a gas in a liquid B01F 3/04595) }
Definition statement
This subclass/group covers:

Mixers in which both the stirring element and the driving unit are submersed in the body of the fluid.

Example:

media141.png

{Vertical beam constructions therefor}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media142.png

{ the stator rotor system being formed by substantial flat surfaces}
Definition statement
This subclass/group covers:

Rotor-stator systems in which the material flows between the rotor and the stator in a radial direction with regard to the rotating shaft.

Examples:

media143.jpg

media144.png

Informative references
Attention is drawn to the following places, which may be of interest for search:
Crushing or disintegrating disc mills
Disc mills (paper making)
{ provided with intermeshing elements}
Definition statement
This subclass/group covers:

Illustrative examples of subject matter classified in this group.

media145.png

media146.png

{ provided with ribs, ridges or grooves on one surface}
Definition statement
This subclass/group covers:

Illustrative examples of subject matter classified in this group.

media147.jpg

media148.png

{ the stator rotor system being formed by conical or cylindrical surfaces, e.g. curved surfaces}
Definition statement
This subclass/group covers:

Rotor-stator systems in which the material flows between the rotor and the stator in a direction substantially parallel to the rotating shaft. The form of the rotor and/or the stator can be substantially cylindrical or substantially conical. Examples:

media149.jpg

media150.png

{ provided with intermeshing elements}
Definition statement
This subclass/group covers:

Illustrative examples of subject matter classified in this group.

media151.png

media152.jpg

{ provided with ribs, ridges or grooves on one surface}
Definition statement
This subclass/group covers:

Illustrative examples of subject matter classified in this group.

media153.jpg

media154.jpg

media155.jpg

media156.png

{the stirring devices being composed of two independently driven coaxial rotors facing each other, e.g. having intermeshing teeth}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media157.png

{ with rotating surfaces facing each other}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media158.png

{ provided with intermeshing elements}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media159.png

{ provided with ribs, ridges or grooves on one surface}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media160.png

{ with rotating surfaces next to one another, e.g. on parallel axis}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media161.png

{ provided with intermeshing elements}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media162.png

{ provided with ribs, ridges or grooves on one surface}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media163.png

{Pipe mixers, i.e. mixing material flowing continuously through pipes, e.g. column mixers}
Definition statement
This subclass/group covers:

Rotary stirrers arranged in a pipe or conduit through which the materials flow in a continuous way.

Examples:

media164.png

media165.png

media166.png

{the stirrer being driven by the moving material}
Definition statement
This subclass/group covers:

Illustrative examples of subject matter classified in this group.

media167.png

media168.png

{comprising liquid feeding, e.g. spraying means (in general B01F 15/0203) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media169.png

{the liquid being fed through the shaft of the stirrer}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media170.png

{with relative displacement, e.g. vertical, between stirrer and receptacle for bringing them into operative position, e.g. with an independent receptacle or with means to close the receptacle; Fixing elements for the receptacle}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media171.png

{with vertical displacement of the stirrer, e.g. with additional means for axially displacing or for pivoting the stirrer about a vertical axis in order to co-operate with several receptacles}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media172.png

{with the stirrer-head pivoting about a horizontal axis to bring the stirrer in and out of operative position, e.g. with a receptacle pivoting about a horizontal axis for emptying}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media173.png

{the stirrers being driven from the bottom of the receptacle}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media174.png

{the stirrers having a central axial inflow and a substantially radial outflow, e.g. centrifugal rotors with several rotors rotating in opposite direction}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media175.png

{with the inflow from one side only, e.g. stirrers placed on the bottom of the receptacle, or used as a bottom discharge pump}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media176.png

{the stirrers co-operating with stationary guiding elements, e.g. surrounding stators or intermeshing stators (B01F 7/164 takes precedence) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media177.png

References relevant to classification in this group
This subclass/group does not cover:
The stirrers co-operating with surrounding stators, or with intermeshing stators
{the stirrers co-operating with surrounding stators, or with intermeshing stators, e.g. comprising slits, orifices or screens}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media178.png

{the stirrers co-operating with stationary guiding elements (B01F 7/164 takes precedence) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media179.png

{ Pan-type mixers, i.e. mixers in which the stirring elements move along the bottom of a pan-shaped receptacle (with stirring elements moving along the wall or bottom of the receptable for scraping in general B01F 7/00208) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media180.png

Informative references
Attention is drawn to the following places, which may be of interest for search:
Pan-type mixers for cement
{the stirrers being additionally moved radially, or oscillating about an axis perpendicular to the stirrer axis (B01F 7/30 takes precedence) }
Definition statement
This subclass/group covers:

Illustrative examples of subject matter classified in this group.

media181.png

media182.png

References relevant to classification in this group
This subclass/group does not cover:
With stirrers having planetary motion
{with stirrers rotating at different speeds or in opposite direction about the same axis}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media183.png

media184.png

{having two or more stirrers on separate shafts, e.g. the shape of the receptacle matching with the periphery of the rotating stirrers (B01F 7/166 takes precedence) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media185.png

{the receptacle being subdivided in adjacent compartments}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media186.png

{co-operating with deflectors or baffles fixed to the receptacle (B01F 7/1635, B01F 7/1645 take precedence) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media187.png

{the baffles being of cylindrical shape, e.g. a mixing chamber surrounding the stirrer, the baffle being displaced axially to form an interior mixing chamber}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media188.png

{the baffles being adjustable or movable (B01F 7/168 takes precedence) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media189.png

{the receptacle being divided into superimposed compartments}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media190.png

{with an independent receptacle-stirrer unit, the stirrer being adapted to be coupled to a drive mechanism}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media191.png

Mixers with rotating receptacles, {i.e. the rotary motion is imparted to effect the mixing} ( {B01F 11/0002,} B01F 13/04 take precedence) ; {Mixing the contents of packages or like independent containers by rotating them}
References relevant to classification in this subclass/group
This subclass/group does not cover:
Mixers combined with safety devices
Special rules of classification within this group

Where existing, classification must be made in the EC class for invention related information, or in the Indexing Code for additional information.

{the receptacles being submitted to rotation about two different axes, e.g. receptables having planetary motion}
Definition statement
This subclass/group covers:

Illustrative examples of subject matter classified in this group.

media192.png

media193.png

{Use of centrifuges for mixing}
Definition statement
This subclass/group covers:

Centrifuges used for mixing materials.

References relevant to classification in this group
This subclass/group does not cover:
Centrifuges per se
{the receptacles rotating about an axis at an angle to their longitudinal axis}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media194.png

{the material flowing continuously through the receptacles from feed to discharge, e.g. the feed and discharge being at the same end}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media195.png

Special rules of classification within this group

This group is not limited to feed and discharge being at the same end but also covers the case with inlet and outlet at opposite ends.

{with at least one screw inside the receptacle for feeding or discharging, e.g. the axis of screw and receptacle being parallel}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media196.png

{Mixing the contents of packages or like independent containers, e.g. tins, bottles, by rotating them}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media197.png

{the containers being supported by driving means, e.g. by rotating rollers}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{the containers being modified for coupling to rotating frames or the like; Containers therefor; Coupling means therefor}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{for test-tubes or like small containers, e.g. containing blood samples}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{Several containers being held in a support for simultaneous mixing, optionally with feeding and discharging means, e.g. for bottles in crates}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{Imparting a composite movement to a plurality of bottles}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{by means of a rotary table provided with a plurality of bottle grippers at its periphery, an additional movement being imparted to the grippers}
Definition statement
This subclass/group covers:

Illustrative examples of subject matter classified in this group.

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{the bottles being submitted to a screw-motion about an axis perpendicular to the axis of the bottles and lying intermediate the ends of the bottles}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{essentially by rotating bottles about an axis perpendicular to the bottle axis and lying outside the bottles, using a rotating drum provided with pockets for the bottles at its periphery}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media206.png

{Parts or components, e.g. receptacles, feeding or discharging means (B01F 9/0009 takes precedence) }
References relevant to classification in this group
This subclass/group does not cover:
Mixers with rotating receptacles with at least one screw inside the receptacle for feeding or discharging
Special rules of classification within this subclass/group

The holding elements for mountinge the containers on the mixing device should be classified in B01F 15/00733, but some documents are still classified in B01F 9/0032

{Receptacles, e.g. provided with liners}
Definition statement
This subclass/group covers:

Specific features of the receptacles/containers not covered by the groups B01F 9/02 and B01F 9/10.

Examples:

Surface characteristics:

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Geometry of the internal chamber:

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{ characterised by the shape or cross-section of the receptacle, e.g. of Y -, Z -, S -, or X shape}
Definition statement
This subclass/group covers:

Receptacles having a special shape to enhance the mixing effect while being rotated.

Examples:

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rotating about a horizontal or inclined axis, e.g. drum mixers
Informative references
Attention is drawn to the following places, which may be of interest for search:
Drum mixers for cement
Drum mixers mounted o a vehicle for cement mixing and transport
with fixed bars, {i.e. stationary, or fixed on the receptacle}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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with {moving, e.g.} rotating stirring devices, {i.e. moving with respect to the receptacle}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{co-operating with stationary mixing elements (B01F 9/106 takes precedence) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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References relevant to classification in this group
This subclass/group does not cover:
Mixers with rotating receptacles, the receptacle comprising a rotary part
{the receptacle comprising a rotary part, e.g. the bottom, and a stationary part, e.g. the wall, with optional use of a stirrer; the receptacle comprising parts moving in opposite directions}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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Mixers with shaking, oscillating, or vibrating mechanisms (B01F 13/04 takes precedence)
Definition statement
This subclass/group covers:

Devices in which shaking, oscillating or vibrating movements are involved for mixing or agitating components, wherein the relevant part is the type of movement produced and the mixing effect achieved.

References relevant to classification in this group
This subclass/group does not cover:
Mixers combined with safety devices
Devices for generating or trnasmitting vibrations, in general. Drive units as such for generating the shaking, oscillating, or vibrating movement
Means for damping vibrations
Gearings
Special rules of classification within this group

Where existing, classification must be made in the EC class for invention related information, or in the Indexing Code for additional information.

{with a mixing receptacle rotating alternately in opposite directions, or rotating about an axis which intersects the receptacle axis at an angle}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{Mixing the contents of independent containers, e.g. test-tubes, by shaking or oscillating them}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{Holders therefor}
Special rules of classification within this subclass/group

The holding elements for mountinge the containers on the mixing device should be classified in B01F 15/00733, but some documents are still classified in B01F 9/0032.

{for beverage bottles, e.g. within crates or with feeding means for the bottles}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:
Beverage bottle
Hand-portable container suitable for containing beverages or similar liquids, and where the content is to be agitated.
{with supporting means moving in a horizontal plane, e.g. describing an orbital path for moving the containers about an axis which interserts the receptacle axis at an angle (B01F 11/0017, B01F 11/0022, B01F 11/0031, B01F 11/0034 take precedence) }
Definition statement
This subclass/group covers:

Illustrative examples of subject matter classified in this group.

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References relevant to classification in this group
This subclass/group does not cover:
By pivoting the containers about an axis
The containers being submitted to a rectilinear movement
The vibrations being caused by an unbalanced rotating member
The vibrations being caused by electromagnets
{by pivoting the containers about an axis (B01F 11/0025, B01F 11/0031, B01F 11/0034 take precedence) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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References relevant to classification in this group
This subclass/group does not cover:
The containers being submitted to a composite movement not in a horizontal plane, e.g. rectilinear and pivoting
The vibrations being caused by an unbalanced rotating member
The vibrations being caused by electromagnets
{the containers being submitted to a wobbling movement}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{with means for transporting test tubes to and from the stirring device}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{Comprising a receptacle to only a part of which the movement is imparted; Periodically deforming flexible tubular members through which the material is flowing}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{comprising a receptacle with a deformable part, e.g. a membrane, to which a motion is imparted}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{having a rotary stirrer oscillating axially (having rotary stirrers with additional radial movement, or oscillating about an axis perpendicular to the stirrer axis, B01F 7/1655) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{for material flowing continuously axially therethrough}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{having an annular trough vibrating about its central axis}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{having a receptacle submitted to a composite movement, i.e. at least one movement being vibratory or oscillatory}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{the material being contained in a flexible bag submitted to periodical deformation}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{the material being directly submitted to a pulsating movement, e.g. by means of an oscillating piston or air column (solvent extraction of liquid solution comprising vibrating mechanisms B01D 11/0438; stationary reactors of pulsating type B01J 19/185) }
Definition statement
This subclass/group covers:

Illustrative examples of subject matter classified in this group.

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{for material continuously moving therethrough (B01F 11/0042, B01F 11/0057, B01F 11/006, B01F 11/0241 take precedence) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{the stirrers performing an oscillatory, vibratory or shaking movement (B01F 11/0054, B01F 11/04 take precedence) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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References relevant to classification in this group
This subclass/group does not cover:
Mixers with pendulum stirrers
{performing a rectilinear reciprocating movement}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{performing a superposed additional movement other than oscillation, vibration or shaking}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{performing an oscillatory movement about an axis}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{Drives therefor, e.g. crank mechanisms (B01F 11/0005 takes precedence) }
References relevant to classification in this group
This subclass/group does not cover:
Devices for generating or trnasmitting vibrations, in general. Drive units as such for generating the shaking, oscillating, or vibrating movement.
Gearings
Special rules of classification within this group

This type of stirrers are included here:

media243.png

with pendulum stirrers, {i.e. with stirrers suspended so as to oscillate about fixed points or axes (stirrers per se B01F 11/0091) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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Other mixers; Mixing plant, including combinations of {mixers, e.g. of} dissimilar mixers
Special rules of classification within this group

Where existing, classification must be made in the EC class for invention related information, or in the Indexing Code for additional information.

{Mixers with an endless belt for transport of the material, e.g. in layers or with mixing means above or at the end of the belt}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{Mixers having moving endless chains or belts, e.g. provided with paddles, as mixing elements}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{ Movable or transportable mixing devices or plants}
Definition statement
This subclass/group covers:

Mixing devices or plants which are designed to be transported or moved from one place to another, or that during operation can be held or displaced.

{ Movable mixing devices, i.e. apt to be shifted or displaced from one place to another, e.g. by human force}
Definition statement
This subclass/group covers:

Mixing devices which can be displaced from one place to another, but which, during use, it remains on a supporting structure (e.g. a dough mixer which can be displaced but, during use, remains on a baking table).

{ portable during use, e.g. hand-held (B05C 17/00553 takes precedence, whisks comprising mixing wires A47J 43/1087) }
Definition statement
This subclass/group covers:

Mixing devices which, during use, is held by the user, e.g. mixing syringes, paint mixers held and operated by a person.

References relevant to classification in this group
This subclass/group does not cover:
Hand tools or apparatus using hand held tools with means allowing the stock of material to consist of at least two different components
{Mixers with loose mixing elements, e.g. balls, in a receptacle}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{Micromixers}
Definition statement
This subclass/group covers:

Microdevices used for mixing or agitating components. Micromixers used in other type of microdevice (e.g. in a Lab-on-a-chip).

References relevant to classification in this group
This subclass/group does not cover:
Microreactors
Microdevices used in laboratory apparatus
Micro-structural devices per se
Apparatus and methods for manufacturing microdevices
Micropumps
Microvalves
Informative references
Attention is drawn to the following places, which may be of interest for search:
Microdevices used in laboratory apparatus
Microreactors
Special rules of classification within this group

The classification of micromixers is done in the following way:

If the way of mixing is already covered by any of the mixing techniques covered by the rest of the groups of B01F, the document is classified both in B01F 13/0059 (or subgroups) and in the subgroups representing the mixing technique (e.g. flow mixing, rotating stirrer, mixing using vibrating mechanisms, etc.).

If the way of mixing is exclusive for microdevices, then the document is accordingly classified in B01F 13/0074 (or subgroups).

{ Hydrodynamic focussing}
Definition statement
This subclass/group covers:

Illustrative examples of subject matter classified in this group.

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{ Mixing chamber}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{ Interdigital streams, i.e. lamellae}
Definition statement
This subclass/group covers:

Illustrative examples of subject matter classified in this group.

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{ The interdigital streams being concentric lamellae}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{ the components to be mixed being combined in a single independent droplet, e.g. these droplets being divided by a non-miscible fluid or consisting of independent droplets}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{ the components being formed by independent droplets which are alternated, the mixing of the components being achieved by diffusion between droplets}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{ using electrohydrodynamic (EHD) or electrokinetic (EKI) phenomena to mix or move the fluids}
Definition statement
This subclass/group covers:

Illustrative examples of subject matter classified in this group.

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{ using magnetohydrodynamic (MHD) phenomena to mix or move the fluids}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{ using heat to mix or move the fluids}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{ using hydrophilic/hydrophobic surfaces}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{ using roughness of the surfaces}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{ using ciliary stirrers to move or stir the fluids}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{Mixing after turning the mixing vessel upside down}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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Mixers with gas {or liquid} agitation, e.g. with air supply tubes { (B01F 3/04106 takes precedence; supplying ingredients in concrete mixers with a pneumatic or hydraulic conveyer B28C 7/062; fluidising devices facilitating filling or emptying of containers B65D 88/72) }
Definition statement
This subclass/group covers:

Mixing using a gas or a liquid as agitation means, said gas or liquid not mixing with the materials forming the mixture.

References relevant to classification in this group
This subclass/group does not cover:
Mixing, the gas being introduced by bubbling
{the mixture being directly submitted to an electromagnetic field without use of a stirrer, e.g. for material comprising ferromagnetic particles, or for molten metal}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{using independant floating stirring elements}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{using supported or suspended stirring elements}
Definition statement
This subclass/group covers:

Illustrative examples of subject matter classified in this group.

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{with several silos arranged in a row or around a central delivery point, e.g. provided with proportioning means}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{ comprising mixers specially adapted for mixing in combination with disintegrating (B01F 7/048, B01F 13/1002 take precedence) }
Definition statement
This subclass/group covers:

Mixing devices and methods which, additionally, comprise means for disintegrating material.

References relevant to classification in this group
This subclass/group does not cover:
Crushing, pulverising or disintegrating in general; milling
{Mixing plant with mixing receptacles receiving material dispended from several component receptacles, e.g. paint tins}
Definition statement
This subclass/group covers:

Illustrative examples of subject matter classified in this group.

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{with component receptacles fixed in a circular configuration on a horizontal table, e.g. the table being able to be indexed about a vertical axis}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{Plants with a plurality of mixing receptacles or mixing tools, e.g. the receptacles or tools being able to be indexed into different working positions along a line or along a circle}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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Accessories for mixers; { Auxiliary operations or auxiliary devices; Parts or details of general application}
Definition statement
This subclass/group covers:

Details or accessories of mixers when in direct combination with the mixing device per se, the accessory not being the essential element as such.

Special rules of classification within this group

Accessories or mechanical details covered by a general (function-oriented) subclass and being the relevant information (claimed and/or described) in the document are not classified in this group.

Where existing, classification must be made in the EC class for invention related information, or in the Indexing Code for additional information.

{Mixing heads comprising a driven stirrer (mixing heads without driven stirrer B01F 5/0077) }
Definition statement
This subclass/group covers:

Illustrative examples of subject matter classified in this group.

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{the stirrer being provided with a surrounding stator}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{Washing or cleaning mixers, e.g. using knockers or scrapers; Inhibiting build-up of material on machine parts (cleaning in general B08B) }
References relevant to classification in this group
This subclass/group does not cover:
Cleaning in general
{Controlling; Testing; Measuring (B01F 15/0408 takes precedence) }
Definition statement
This subclass/group covers:

Control, test or measuring elements in combination with the mixing device, the specific details of said elements not being of relevance.

References relevant to classification in this group
This subclass/group does not cover:
Measuring, testing in general
Control systems in general
{ Drives, e.g. for reciprocating motion; Transmissions; Brakes; Couplings (B01F 15/00201, B01F 15/00668 take precedence; drives using magnetic couplings B01F 13/08) }
Definition statement
This subclass/group covers:

The mentioning of the driving means, transmissions, brakes or couplings (in a generic form) in combination with the mixing device.

References relevant to classification in this group
This subclass/group does not cover:
Mounting or supporting stirrer shafts on receptacles
Wind motors
Hydraulic motors
Brakes
Couplings
Transmissions
Electric motors
Special rules of classification within this group

Drive units, transmissions, brakes or couplings per se, i.e. when said elements and/or thier details are the essential part of the described or claimed invention are not classified in this group.

{Construction of driving shafts}
References relevant to classification in this group
This subclass/group does not cover:
Shafts, in general
{Driving reciprocating or oscillating stirrers}
References relevant to classification in this group
This subclass/group does not cover:
Devices for generating or trnasmitting vibrations, in general. Drive units as such for generating the shaking, oscillating, or vibrating movement
{ Clamping or holding arrangements for mounting receptacles on mixing devices, e.g. for shaking, vibrating or rotating the receptacle}
Special rules of classification within this subclass/group

The holding elements for mounting the receptacles on mixing devices are to be classified in B01F 15/00733 but some are still left in B01F 9/0032

{ having a cup-shaped or cage-type form}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{ having a jaw-type or finger-type shape}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media278.png

{ of the vertically movable, two-plates type}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{by rotating them about an axis parallel to the plane of the opening}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{by moving them in the plane of the opening (B01F 15/00818 takes precedence) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media281.png

References relevant to classification in this group
This subclass/group does not cover:
Moving covers on a cylindrical drum in a circular path along the drum
{by rotating them about an axis perpendicular to the plane of the opening}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media282.png

{by moving them perpendicular to the plane of the opening}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media283.png

{and moving them afterwards in another direction}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media284.png

{Moving covers on a cylindrical drum in a circular path along the drum}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media285.png

{Receptacles (B01F 9/0032, B01F 15/00779 take precedence) }
Definition statement
This subclass/group covers:

Specific features of the receptacles/containers in which the mixing is performed not covered by any of the main groups B01F 1/00, B01F 3/00, B01F 5/00, B01F 7/00, B01F 9/00, B01F 11/00 and B01F 13/00.

{ Nature of the receptacle}
Definition statement
This subclass/group covers:

The material or surface finish of the (walls of the) receptacle.

{ comprising compartments keeping the materials to be mixed separated until the mixing is initiated (B65D 81/32 takes precedence) }
Definition statement
This subclass/group covers:

Containers, receptacles or set of them for keeping the materials to be mixed until the moment of mixing. Normally this kind of materials are to be mixed immediately before their final use (e.g. for specific glues or polymers, paints, beverages, medicaments, dental material, bone cement, etc.). Examples:

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References relevant to classification in this group
This subclass/group does not cover:
Containers, packaging elements, or packages for packaging two or more different materials which must be maintained separate prior to use in admixture
{ Configuration of the interior}
Definition statement
This subclass/group covers:

The shape of the receptacle, when relevant for the mixing process. Elements attached to the receptacle as auxiliary means not covered by the previous subgroups. Example:

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{ provided with baffles, plates or bars on the wall or the bottom}
Definition statement
This subclass/group covers:

Illustrative examples of subject matter classified in this group.

media291.png

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media293.png

{ provided with guide tubes on the wall or the bottom}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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{ Closely surrounding the rotating element}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

media295.png

{Baffles; Flow breakers}
Definition statement
This subclass/group covers:

Illustrative examples of subject matter classified in this group.

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media298.png

media299.png

{Maintenance, e.g. replacing, repairing or inspecting; Making mixers or parts thereof}
Definition statement
This subclass/group covers:

General measures directed to the maintenance, repairing, or inspection of mixing devices (e.g. means for mounting/dismounting specific parts, observation elements as man-holes, etc.).

It also covers ways of making the mixing elements which are not covered by specific general fields as B29C, B22, B23 etc. Examples:

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{General build-up of the mixers}
Definition statement
This subclass/group covers:

General specification about how the mixer is built-up, e.g. how the different elements are brought up together, how elements are mounted, etc.

Examples:

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Feed or discharge mechanisms
Definition statement
This subclass/group covers:

Devices for feeding or discharging the mixer in combination with the mixing device.

References relevant to classification in this group
This subclass/group does not cover:
Conveying of materials, in general
Loaing or unloading, in general
B65G88/00
Special rules of classification within this group

The feeding or discharging means per se are not classified in this group.

{the gate carrying a stirrer acting as discharge pump}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group.

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Forming a predetermined ratio of the substances to be mixed (controlling ratio of two or more flows of fluid or fluent material G05D 11/02) { (G05D 11/00 takes precedence) }
Definition statement
This subclass/group covers:

Devices and methods for controlling the ratio of the components to be mixed in combination with means for mixing (i.e. homogenizing) the mixture of merged components.

References relevant to classification in this group
This subclass/group does not cover:
Ratio control
Special rules of classification within this group

Generally control systems for establishing a correct ratio of components are not classified in this group.

{Forming mixtures with changing ratio or gradient}
Definition statement
This subclass/group covers:

Illustrative examples of subject matter classified in this group.

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{Forming a predetermined ratio of two or more flows, e.g. using flow-sensing or flow controlling devices (B01F 15/0408 takes precedence) }
Definition statement
This subclass/group covers:

Forming a ratio of components when said components are continuously flowing.

{by feeding the components in predetermined amounts}
Definition statement
This subclass/group covers:

Forming a ratio of components when said components are fed batchwise.

Heating or cooling systems
Definition statement
This subclass/group covers:

Heating or cooling elements in combination with the mixing device, the specific details of the heat-exchange means not being of relevance.

References relevant to classification in this group
This subclass/group does not cover:
Heat exchangers in general
Use of substances as emulsifying, wetting, dispersing or foam-producing agents {see for particular applications relevant classes, e.g. lubricant emulsions C10M: fuel emulsions C10L 1/32; detergents C11D; colour and dye dispersions C09; textile applications D06; cosmetics A61K; food A23L 1/035; biocides A01N; petrol winning E21B; hydrometallurgy, metal liquid-liquid extraction C22B; mixers B01F 3/00; polymers mixing; waxes C08; paper D21H; demulsification (anti foam) B01D 19/04}
Definition statement
This subclass/group covers:

Emulsions, dispersions and suspensions if claimed per se

Compounding ingredients for forming emulsions, dispersions, suspensions

Different types of emulsions, dispersions (micro-, nanoemulsions, multiple emulsions, w/o emulsions)

Relationship between large subject matter areas

Cosmetic preparations are classified in A61K 8/00 and A61Q

Compositions for drilling of boreholes or wells are classified in C09K 8/50

Organic dyes are classified in C09B

Coating compositions are classified in C09D

Lubricants are classified in C10M

Detergent compositions are classified in C11D

Informative references
Attention is drawn to the following places, which may be of interest for search:
Pesticides, disinfectants
Food
Cosmetic preparations
Emulsion polymerisation
Dyes, pigments
Coatings, inks, paints
Lubricants
Detergents
Special rules of classification within this group

Only the compounds that form the emulsion are classified, ingredients that belong to another subgroup/subclass are classified there.

For example: organic dye dispersion, the dye is only classified in C09B.

When main claims are general, for example a dispersed particle in a liquid, it's classified in B01F 17/00.

In absence of an indication to the contrary, classification is made in the last appropriate place

Documents classified in the mixture groups are also classified in the individual group of B01F 17/00

Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:
Emulsifier
compound that promotes the dispersion of one liquid in another, as in the mixture of oil and water by lowering the surface tension between the two phases
Emulsion
disperse systems of two or more immiscible liquids, one forming the continuous phase and the other the dispersant phase
Definition statement
This subclass/group covers:

Mercaptanes, thiophenes, sulfides, sulfites, their Se or Te analogues, elemental S, Se or Te

Definition statement
This subclass/group covers:

Sulfonic or sulphuric acids or salts thereof of hydrocarbons, their ethers and alcohols.

Informative references
Attention is drawn to the following places, which may be of interest for search:
Cosmetic or similar toilet preparations containing organic compounds with sulfur
Detergents compositions based on sulfonic acids or sulfuric acid esters
[N: heterocyclic S containing compounds]
Definition statement
This subclass/group covers:

e.g. thiazoles

[N: derivates of low molecular-weight sulfonic or sulfuric acids
Definition statement
This subclass/group covers:

e.g. short chain (C1-C8-sulfonic acids)

[N: aromatic sulfonic acids ]
Definition statement
This subclass/group covers:

Aromatic sulfonic acids

[N: Organic compounds containing phosphorous]
Definition statement
This subclass/group covers:

e.g. phosphonic, phosphoric acids

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Last Modified: 10/11/2013