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PCE
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CPC Subgroup
C05B 1/06

Ammoniation of superphosphates (fertilisers based essentially on ammonium orthophosphate C05B7/00)

Full Title

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 > Ammoniation of superphosphates (fertilisers based essentially on ammonium orthophosphate C05B7/00)

Top Applicants

Top 10 applicants by patent filingsfor class C05, 2013–2023, worldwide · Source: EPO PATSTAT

  1. CHINESE ACADEMY OF SCIENCES 654
  2. BASF (BADISCHE ANILIN & SODA FABRIK) DE 452
  3. YARA INTERNATIONAL NO 434
  4. SHANDONG SUNWAY LANDSCAPE TECHNOLOGY COMPANY 315
  5. SHENZHEN BATIAN ECOTYPIC ENGINEERING COMPANY 253
  6. GUIZHOU UNIVERSITY 251
  7. GUILIN JIEYU ENVIRONMENTAL PROTECTION SCIENCE & TECHNOLOGY COMPANY 236
  8. GUANGXI ACADEMY OF AGRICULTURAL SCIENCES 205
  9. CHINA AGRICULTURAL UNIVERSITY 197
  10. KOCH AGRONOMIC SERVICES US 194