C05B PHOSPHATIC FERTILISERS
Introduced: September 1968
Description
C05B covers the manufacture and composition of fertilizers whose primary nutritive component is phosphorus or phosphate compounds. This includes superphosphates, triple superphosphates, phosphate rock products, and other phosphorus-containing fertilizer formulations, whether simple phosphate salts or complex mixtures with secondary nutrients. The classification encompasses both chemical processes for phosphate conversion and the resulting fertilizer products, but excludes nitrogen-phosphorus or potassium-phosphorus compound fertilizers, which fall under other C05 subclasses.
Additional Content IPC
Glossary
Fertiliser (fertiliser material) fertiliser fertilisers fertiliser material fertiliser materials Natural or artificial substance containing the chemical elements that improve growth and productiveness of plants. Phosphatic fertiliser phosphatic fertilisers A source of inorganic and/or organic phosphate. Common examples include single superphosphate - (CaH2PO4)16 - having a P2O5 content of circa 18%* and ammonium phosphate, having a P2O5 content of circa 20%*. Thomas phosphate A furnace slag produced in steel-making, containing large amounts of calcium phosphate. Double superphosphate double superphosphates CaH4(PO4)2 - having circa 32% P2O5 present* Triple superphosphate triple superphosphates Ca(H2 PO4)2 having circa 46-48% P2O5 present*
Limiting references
Nitrogenous 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 11 combined children, 10 exist in both systems.
1 codes exist only in IPC.
5 shared codes have differing titles between IPC and CPC.
Child Classifications
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- C05B 1/00 Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly IPC+CPC Available in IPC and CPC
- C05B 11/00 Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes IPC+CPC Available in IPC and CPC
- C05B 13/00 Fertilisers produced by pyrogenic processes from phosphatic materials IPC+CPC Available in IPC and CPC
- C05B 17/00 Other phosphatic fertilisers, e.g. soft rock phosphates, bone meal IPC+CPC Available in IPC and CPC
- C05B 19/00 Granulation or pelletisation of phosphatic fertilisers, other than slag (granulating apparatus B01J2/00; granulating slag C04B) IPC+CPC Available in IPC and CPC
- C05B 21/00 Mixtures of phosphatic fertilisers covered by more than one of main groups IPC only IPC only
- C05B 3/00 Fertilisers based essentially on di-calcium phosphate (C05B11/00 takes precedence) IPC+CPC Available in IPC and CPC
- C05B 7/00 Fertilisers based essentially on alkali or ammonium orthophosphates (C05B11/00 takes precedence) IPC+CPC Available in IPC and CPC
- C05B 9/00 Fertilisers based essentially on phosphates or double phosphates of magnesium (C05B11/00 takes precedence) 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