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PCE
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Search for IPC and CPC classification codes or keywords
CPC Subgroup
C05D 3/02

from limestone, calcium carbonate, calcium hydrate, slaked lime, calcium oxide, waste calcium products

Full Title

Calcareous fertilisers (C05D7/00 takes precedence) > from limestone, calcium carbonate, calcium hydrate, slaked lime, calcium oxide, waste calcium products

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