C05F ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
Description
C05F encompasses organic fertilisers derived from waste materials, refuse, and other organic sources not classified elsewhere within the fertiliser categories. This subclass covers technologies for processing and converting organic waste streams—such as compost, sewage sludge, animal manure, and industrial organic byproducts—into soil amendments and plant nutrients. The classification includes methods for treating, stabilising, and preparing these materials to improve their agronomic value and safety for agricultural application.
Filing statistics
CPC subclass C05F 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
7 direct subcodes
Child Classifications
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- C05F 1/00 Fertilisers made from animal corpses, or parts thereof
- C05F 11/00 Other organic fertilisers
- C05F 17/00 Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F 3/00 Fertilisers from human or animal excrements, e.g. manure
- C05F 5/00 Fertilisers from distillery wastes, molasses, vinasses, sugar plant or similar wastes or residues,
- C05F 7/00 Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
- C05F 9/00 Fertilisers from household or town refuse
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