C05 FERTILISERS; MANUFACTURE THEREOF
Description
C05 covers the chemical composition, formulation, and manufacturing processes of fertilizing materials and soil amendments. This includes synthetic fertilizers (nitrogen, phosphorus, potassium compounds), organic fertilizers, mixed fertilizer compositions, and methods for their production or treatment. The class extends to conditioning and stabilization of fertilizers, as well as testing and quality control methods related to fertilizer performance. Adjacent classes handle related subjects such as compost (A23G, C05F), agricultural soil improvement techniques beyond chemical fertilization, and the use of specific chemical compounds in isolation when not formulated as fertilizers.
5 direct subcodes
Child Classifications
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- C05B PHOSPHATIC FERTILISERS
- C05C NITROGENOUS FERTILISERS
- C05D INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05F ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05G MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS (organic fertilisers containing added bacterial cultures, mycelia, or the like C05F11/08; organic fertilisers containing plant vitamins or hormones C05F11/10); FERTILISERS CHARACTERISED BY THEIR FORM
Top Applicants
Top 10 applicants by patent filings, 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