DIFF Main Group
C05F 7/00 Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
Introduced: September 1968
Of 3 combined children, 2 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
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- C05F 7/02 from sulfite liquor or other waste lyes from the manufacture of cellulose 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