C05C NITROGENOUS FERTILISERS
Introduced: September 1968
Description
C05C covers nitrogenous fertiliser compositions and their manufacturing processes. This subclass includes ammonia-based fertilisers, nitrate salts, urea compounds, ammonium salts, and complex fertilisers containing nitrogen as a primary nutrient. Manufacturing methods for nitrogen fertilisation products, such as the synthesis of ammonia, nitric acid production, and granulation or prilling of nitrogen-containing compounds, fall within this classification. Adjacent subclasses C05A and C05B address organic fertilisers and phosphatic/potassic fertilisers respectively, while C05F and C05G cover compound fertilisers and methods not specific to single nutrient types.
Additional Content IPC
Glossary
Fertiliser (fertiliser material) Natural or artificial substance containing the chemical elements that improve growth and productiveness of plants. Nitrogenous fertiliser – see also "Special rules" above when more than one element present Fertiliser materials, natural or synthesized, containing nitrogen available for fixation by vegetation, such as potassium nitrate, KNO3, or ammonium nitrate, NH4NO3
Limiting references
PHOSPHATIC FERTILISERS INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES , ; FERTILISERS PRODUCING CARBON DIOXIDE ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES , , e.g. FERTILISERS FROM WASTE OR REFUSE
Of 7 combined children, 6 exist in both systems.
1 codes exist only in IPC.
Child Classifications
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- C05C 13/00 Mixtures of nitrogenous fertilisers covered by more than one of main groups IPC only IPC only
- C05C 3/00 Fertilisers containing other salts of ammonia or ammonia itself, e.g. gas liquor +1 CPC IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class C05,2013–2023, worldwide · Source: EPO PATSTAT
- CHINESE ACADEMY OF SCIENCES 895
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 387
- GUIZHOU UNIVERSITY 386
- YARA INTERNATIONAL NO 380
- SHENZHEN BATIAN ECOTYPIC ENGINEERING COMPANY 378
- SHANDONG SUNWAY LANDSCAPE TECHNOLOGY COMPANY 327
- GUILIN JIEYU ENVIRONMENTAL PROTECTION SCIENCE & TECHNOLOGY COMPANY 283
- CHINA AGRICULTURAL UNIVERSITY 271
- GUANGXI UNIVERSITY 266
- NANJING AGRICULTURAL UNIVERSITY 231
Top Applicants (CPC)
Class C05,2013–2023, worldwide · Source: EPO PATSTAT
- CHINESE ACADEMY OF SCIENCES 654
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 452
- YARA INTERNATIONAL NO 434
- SHANDONG SUNWAY LANDSCAPE TECHNOLOGY COMPANY 315
- SHENZHEN BATIAN ECOTYPIC ENGINEERING COMPANY 253
- GUIZHOU UNIVERSITY 251
- GUILIN JIEYU ENVIRONMENTAL PROTECTION SCIENCE & TECHNOLOGY COMPANY 236
- GUANGXI ACADEMY OF AGRICULTURAL SCIENCES 205
- CHINA AGRICULTURAL UNIVERSITY 197
- KOCH AGRONOMIC SERVICES US 194