CPC Main Group
C05F 17/00 Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
Filing statistics
CPC C05F 17/00 belongs to the parent subclass C05F, which recorded 41,885 patent applications worldwide between 2013 and 2023. Annual filings grew from 1,398 in 2013 to 3,031 in 2023 (+117%), peaking at 5,945 applications in 2016. The most active applicants in class C05 are CHINESE ACADEMY OF SCIENCES (654 applications), BASF (BADISCHE ANILIN & SODA FABRIK) (452 applications) and YARA INTERNATIONAL (434 applications).
Source: EPO PATSTAT, worldwide filings
10 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- C05F 17/05 Treatments involving invertebrates, e.g. worms, flies or maggots
- C05F 17/10 Addition or removal of substances other than water or air to or from the material during the treatment (for activating or stimulating the treatment C05F17/20)
- C05F 17/20 using specific microorganisms or substances, e.g. enzymes, for activating or stimulating the treatment (use of invertebrates C05F17/05)
- C05F 17/30 using irradiation, e.g. solar or nuclear radiation; using electric or magnetic fields
- C05F 17/40 Treatment of liquids or slurries
- C05F 17/50 Treatments combining two or more different biological or biochemical treatments, e.g. anaerobic and aerobic treatment or vermicomposting and aerobic treatment
- C05F 17/60 Heating or cooling during the treatment
- C05F 17/70 Controlling the treatment in response to process parameters
- C05F 17/80 Separation, elimination or disposal of harmful substances during the treatment
- C05F 17/90 Apparatus therefor
Top Applicants
Top 10 applicants by patent filingsfor 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