CPC Definition - Subclass C05G
This place covers:
Mixtures of fertilisers belonging individually to different subclasses of C05;
Mixtures of one or more fertilisers with materials not having a specially fertilising activity;
Further uses of fertiliser, also the form in which it is presented;
Fertilisers in liquid form; Special formulations prepared to obtain a liquid form of the fertiliser
Mixtures of fertilisers with pesticides, soil conditioners, wetting agents or with agents affecting the nitrification of ammonium compounds or urea in the soil.
Treating manure; apparatus for distributing fertiliser A01C.
Soil-cultivation substrates A01G 9/00.
Plant growth regulators A01N.
Soil-conditioning or soil-stabilising materials C09K 17/00.
An ingredient in a mixture of fertilisers, or a single fertiliser which contains more that one of the chemical elements on which the subdivision is based, is classified only in the first of the appropriate places. Thus, a nitrophosphate or an ammoniated superphosphate is classified in C05B but not in C05C, magnesium phosphate is classified in C05B but not in C05D, and calcium cyanamide in C05C but not in C05D.
Information relative to the form in which the fertilizer is presented, e.g. granulation, coating, etc. is always given in addition to the chemical composition of the fertilizers.
General statements in relation to a " fertiliser being formulated as liquid, powder, granulate or any other suitable form" are not given per se a class in this group. Not all possible liquid fertilisers are classified in this subclass, only when the fertiliser is liquid and is an important feature of the invention.
Any ingredient in a mixture, which is considered to present information of interest for search, is also classified using a combination of classification symbols. If a document concerns embodiments comprising mixtures whose elements are covered individually by different subclasses, groups or subgroups, the document is classified with a Combination-set.
The following rules apply:
- The first element of the Combination-set corresponds to the first relevant (sub)group mentioned in the classification scheme independently of the importance or relevance of the element in the whole fertilizer mixture;
- the following element or elements of the Combination_set are added sequentially in the order in which they appear in the classification scheme to the first element using a ",".
Example: a fertilizer containing a mixture of superphosphate (C05B 1/02), ammonium nitrate (C05C 1/00) and potassium chloride (C05D 1/02) will be given the Combination-set C05B 1/02, C05C 1/00, C05D 1/02.
In this place, the following terms or expressions are used with the meaning indicated:
Fertiliser (fertiliser material)
Natural or artificial substance containing the chemical elements that improve growth and productiveness of plants.
In patent documents, the following words/expressions are often used as synonyms:
- "fertiliser" and "plant nutrient "
- “Amendment”, “Plant food”, “Agricultural chemical” and "Fertiliser"
In patent documents, the following words/expressions are often used with the meaning indicated:
" composition capable of modifying the chemical (pH) or physical (structure) condition of soils for agricultural purposes".
This group is mainly used as additional information or for documents difficult to classify anywhere else in the previous groups of this classification as it would be the case for unspecific mixtures of organic and inorganic materials .
In the case of mixtures with well defined components, combination classes giving specific information about these components will be used instead.
This place covers:
Fertilisers mixed with substances not encompassed under the finer classification given below. Some examples of substances classified in this group are : colorants and pigments, corrosion inhibitors, odours, preservatives, magnetic materials etc.
Whether a fertiliser is characterised by the materials it is prepared from and the form which it presents a class pertinent to both aspects should be given.
Attention is drawn to the following places, which may be of interest for search:
Using agents to prevent the granules sticking together; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
This place covers:
Mixtures of fertilisers with other compounds mainly to improve the physical structure or water retention capacity of soils for agricultural purposes. These compounds are e.g. water retaining polymers, sand or clay materials.
This place does not cover:
Soil-conditioning or soil-stabilising materials for other than agricultural purposes