C05D INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
Description
C05D covers inorganic fertilizers that fall outside the scope of other C05 subclasses (such as nitrogen, phosphate, or potassium-based fertilizers with specific compositions), including formulations and manufacturing processes for these residual fertilizer types. This subclass specifically encompasses fertilizers that generate carbon dioxide as a functional component or byproduct, such as urea-based products and certain mineral amendments that release CO₂ during application or storage. The classification addresses both standalone inorganic fertilizer compositions not adequately covered elsewhere and combined fertilizer products designed to provide agronomic benefits through CO₂ generation. Manufacturing methods, handling, and formulation techniques for these specialized inorganic fertilizers are also included within this subclass.
5 direct subcodes
Child Classifications
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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