CPC Definition - Subclass C05B
This place covers:
Fertilizer compositions containing phosphorus in any organic or inorganic form, processes and apparatus for obtaining them.
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.
Any apparatus for preparing fertilisers may be classified in those areas of C05 that are specific for such apparatus – e.g., C05B 1/10 – apparatus for the manufacture of superphosphates.
Otherwise, individual apparatus should be classified in the relevant area of the IPC, e.g., F26B 7/00.
This place does not cover:
Attention is drawn to the following places, which may be of interest for search:
Harrows with means for distributing fertilisers | |
Fertlisers distributors | |
Mowers combined with dispensing apparatus, e.g. for fertilisers | |
Horticulture; cultivation of vegetables, flowers, rice, fruit, vines, hops or seaweed; forestry; watering | |
Root feeders; injecting fertilisers into roots | |
Phosphorus; compounds thereof |
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.
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 ",".
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:
"enrichment" | "fertiliser" |
"soil amendment" | " composition capable of modifying the chemical (pH) or physical (structure) condition of soils for agricultural purposes". |
This place covers:
Fertilisers produced by reacting rock or bone phosphates with sulphuric or phosphoric acid in such amounts and concentrations as to yield solid products directly and apparatus for their manufacture.
This place does not cover:
Fertilizers based essentially on ammonium orthophosphate |
This place does not cover:
Di calcium phosphate fertilisers produced by wet treating raw materials with acids or alkalis |
This place covers:
Fertilizers obtained from phosphate containing slags, waste or by products of metallurgical processes with fertilizer value.
In this place, the following terms or expressions are used with the meaning indicated:
Thomas phosphate; Thomas slag | slag calcium phosphate obtained in steelmaking converters from pig iron with high phosphorus acid content |
In patent documents, the following words/expressions are often used as synonyms:
- "Thomas phosphate", "Thomas slag" and "converter slag"
This place does not cover:
Alkali or ammonium orthophosphates produced by wet or leach treatment with acids or alkalis |
This place does not cover:
Fertilisers based essentially on phosphates or double phosphates of magnesium produced by wet or leach treatment with acids or alkalis |
This place covers:
Fertilisers produced by pyrogenic processes from phosphatic materials like rock phosphates or metallic phosphorus compounds such as to rend polyphosphate fertilisers.
This group mainly contains polyphosphates, and also any other fertilizers produced from pyrogenic processes from phosphate fertilizers
This place covers:
Phosphatic fertilisers of organic nature.
This place does not cover:
Bone meal |
This place covers:
Other phosphatic fertilisers not classified in the previous groups, e.g. soft rock phosphates, bone meal, phosphite fertilisers.