CPC Definition - Subclass A62D
This place covers:
Compositions:
- for fire-extinguishing;
- of materials for coverings or clothing affording protection against harmful
- chemical agents;
- of materials for transparent parts of gas-masks, respirators, breathing bags or
- helmets;
- of chemical substances for use in breathing apparatus.
Use of chemical substances in extinguishing fires.
Processes chemical, bio-chemical or physico-chemical for chemically altering harmful chemical substances into safe or less dangerous substances.
This place covers:
Compositions for fire-extinguishing
Use of chemical substances in extinguishing fires
This place does not cover:
Fire prevention, fire containment or fire fighting, e.g. portable extinguishers or fire-fighting vehicles |
Attention is drawn to the following places, which may be of interest for search:
Fireproof paints | |
Fireproofing materials |
This place covers:
Processes for chemically altering harmful chemical substances into safe or less-dangerous substances.
These processes can be chemical, bio-chemical or physico-chemical processes, e.g. use of special chemical reagents for chemical fixing, which result in the decomposition or transformation of the harmful chemical substances into harmless or less harmful substances because of a change in their chemical structure.
These processes can comprise the step of dissolving or dispersing the harmful chemical substances in water for the purpose of treating them, or the step of producing, for treatment, a gaseous product from a non-gaseous harmful chemical substance.
The harmful chemical substance can be one component of a mixture, e.g. a component in contaminated sludge.
The disposal of solid waste or the reclamation of contaminated soil is classified elsewhere, i.e. in class B09.
However, the treatment of a specific harmful chemical substance in solid waste resulting in the change of its chemical constitution to make it harmless or less harmful is covered by A62D 3/00.
In the same way, treatment of sludge is not classified here with the exception of the treatment of a specific harmful chemical substance in the sludge, e.g. in residues from industrial processes (excluding contaminants from municipal sewage treatment) resulting in the change of its chemical constitution to make it harmless or less harmful.
Preventive chemical treatments, e.g. to prevent the formation of harmful chemical substances are classified elsewhere, depending on the kind of treatment and/or the context of application.
Chemical or physico-chemical type processes where eradicating or diminishing the dangerousness of harmful chemical substances produces useful products (e.g. cement) are not covered here. These types of processes are covered by the appropriate subclass for making the specific product.
However in situations where processes for making products include a subset of process steps with eradicating or diminishing the dangerousness of a harmful chemical substance as its fundamental goal, and this subset is in itself novel and unobvious, this subset is covered by group A62D 3/00.
This place does not cover:
Detoxification of foods or foodstuffs | |
Apparatus for chemical, physical or physico-chemical processes in general | |
Treatment of gases, e.g.: chemical or biological purification of smoke or fumes, e.g. flue gas | |
Disposal of solid waste | |
Reclamation of contaminated soil | |
Chemical processes resulting in the production of a useful product, e.g.: using untreated contaminated fly ash as raw material in the manufacture of cement, | |
Purification or modifying the chemical compositions of combustible gases containing carbon monoxide | |
Metals obtained from residues or scrap | |
Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust gases | |
Consuming noxious gases by combustion | |
Treatment of radioactively-contaminated waste |
Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:
Attention is drawn to the following places, which may be of interest for search:
Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses | |
Disinfection or sterilizing methods specially adapted for refuse | |
Waste or refuse as compounding ingredient for glass, cement, mortar, concrete, artificial stone or ceramics | |
Materials for absorbing liquids to remove pollution, e.g. oil,gasoline, fat | |
Destructive distillation of carbonaceous materials | |
Destructive hydrogenation of carbonaceous materials | |
Microorganisms, enzymes or compositions thereof | |
Consuming waste by combustion | |
Removal or treatment of combustion products or combustion residues |
- In this group, at each hierarchical level, in the absence of an indication to the contrary, classification is made in the first appropriate place.
- Indexing Codes:
(1) When classifying in this group the Indexing Codes of group A62D 2101/00 are to be used for identifying the origin or chemical nature of the harmful chemical substances which are made harmless or less harmful by processes already classified as such in groups A62D 3/02 - A62D 3/40
(2) When indexing a substance in groups A62D 2101/02 - A62D 2101/08, indexing according to its chemical structure is also made in one or more of groups A62D 2101/20 - A62D 2101/40 , if of interest [C0704]
In this place, the following terms or expressions are used with the meaning indicated:
Catalyst | Substance which either increases or decreases the speed of a chemical reaction, without itself undergoing a permanent chemical change. |
Chalcogen | Also known as chalcogenides, specifically O, S, Se, Te. |
Harmful | Directly toxic to living organisms, with the exception of toxic to plants only. |
Harmful chemical substances | Chemical waste substances which are too hazardous or toxic to be discarded in an ordinary municipal landfill. |
Halogens | The elements F, Cl, Br ,I , At. |
Physico-chemical | Having at least one chemical step and one physical step. |
Sludge | Residue (normally viscous) from an industrial,residential, or agricultural process. |
This place covers:
Materials for coverings or clothing affording protection against harmful chemical agents.
By materials is meant the chemical substances p.ex. active carbon, which are used in the covering or in the clothing, to neutralise/decompose the harmful agent.
Attention is drawn to the following places, which may be of interest for search:
Selection of special materials for outwear | |
Protective clothing affording protection against contamination from chemicals, toxic or hostile environments | |
Filtering material for liquid or gaseous fluids | |
Semi-permeable membranes for separation processes | |
Layered products | |
Treatment of fibres, threads, yarns, fabrics, feathers, or fibrous goods or fibrous goods made from such materials |
The components parts for gas-masks or gas-helmets are classified in A62B 18/08 and the composition of materials for the windows or other transparent parts of gas-masks are classified in A62D 7/00
Attention is drawn to the following places, which may be of interest for search:
Layered products | |
Composition for glass | |
Composition for transparent ceramics | |
Materials for application to surfaces to minimize adherence of ice, mist or water thereto |
Attention is drawn to the following places, which may be of interest for search:
Production of oxygen-generating compounds in general | |
Processes for the production of oxygen from chemicals in general |