C05F 17/971 for feeding or discharging material to be treated; for feeding or discharging other material
Introduced: January 2020
Full Title
Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation > Apparatus therefor > Constructional parts, e.g. floors, covers or doors > for feeding or discharging material to be treated; for feeding or discharging other material
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- FERTILISERS; MANUFACTURE THEREOF
- Subclass:
- ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES , , e.g. FERTILISERS FROM WASTE OR REFUSE
Filing statistics
IPC C05F 17/971 belongs to the parent subclass C05F, which recorded 57,775 patent applications worldwide between 2013 and 2023. Annual filings grew from 2,815 in 2013 to 5,150 in 2023 (+83%), peaking at 6,775 applications in 2020. The most active applicants in class C05 are CHINESE ACADEMY OF SCIENCES (895 applications), BASF (BADISCHE ANILIN & SODA FABRIK) (387 applications) and GUIZHOU UNIVERSITY (386 applications).
Source: EPO PATSTAT, worldwide filings
2 direct subcodes
Child Classifications
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- C05F 17/979 the other material being gaseous
- C05F 17/986 the other material being liquid
Top Applicants
Top 10 applicants by patent filingsfor 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