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DIFF Subclass Not Allocatable
C05D

INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE

Introduced: September 1968

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.

Title

Titles differ between systems:

IPC: INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES ,; FERTILISERS PRODUCING CARBON DIOXIDE

CPC: INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE

Full Title

Full titles differ between systems:

IPC:

INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES ,; FERTILISERS PRODUCING CARBON DIOXIDE

CPC:

INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE

Additional Content IPC

fertiliser (fertiliser material) natural or artificial substance containing the chemical elements that improve growth and productiveness of plants. inorganic compound inorganic compounds (taken from the glossary of terms for subclasses , and ) a compound devoid of a carbon atom and containing a non-metallic element or a compound containing a carbon atom, and satisfying one of the following criteria: The compound cannot have a carbon atom having direct bonding to another carbon atom, or the compound cannot have direct bonding between a carbon atom and a halogen or hydrogen atom, or the compound cannot have direct bonding between a carbon and a nitrogen atom by a single or double bond. The following are exceptions to the above and are to be considered as inorganic compounds: compounds consisting of only carbon atoms, (e.g. fullerenes), cyanogen, cyanogen halides, cyanamide, phosgene, thiophosgene, hydrocyanic acid, isocyanic acid, isothiocyanic acid, fulminic acid, unsubstituted carbamic acid, and salts of the previously mentioned acids and which contain the same limitations as to a carbon atom.

Of 6 combined children, 5 exist in both systems.

1 codes exist only in IPC.

3 shared codes have differing titles between IPC and CPC.

Child Classifications

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  • C05D 11/00 Mixtures of fertilisers covered by more than one of main groups IPC only IPC only
  • C05D 5/00 Fertilisers containing magnesium (C05D7/00 takes precedence) IPC+CPC Available in IPC and CPC
  • C05D 7/00 Fertilisers producing carbon dioxide IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class C05,2013–2023, worldwide · Source: EPO PATSTAT

  1. CHINESE ACADEMY OF SCIENCES 895
  2. BASF (BADISCHE ANILIN & SODA FABRIK) DE 387
  3. GUIZHOU UNIVERSITY 386
  4. YARA INTERNATIONAL NO 380
  5. SHENZHEN BATIAN ECOTYPIC ENGINEERING COMPANY 378
  6. SHANDONG SUNWAY LANDSCAPE TECHNOLOGY COMPANY 327
  7. GUILIN JIEYU ENVIRONMENTAL PROTECTION SCIENCE & TECHNOLOGY COMPANY 283
  8. CHINA AGRICULTURAL UNIVERSITY 271
  9. GUANGXI UNIVERSITY 266
  10. NANJING AGRICULTURAL UNIVERSITY 231

Top Applicants (CPC)

Class C05,2013–2023, worldwide · Source: EPO PATSTAT

  1. CHINESE ACADEMY OF SCIENCES 654
  2. BASF (BADISCHE ANILIN & SODA FABRIK) DE 452
  3. YARA INTERNATIONAL NO 434
  4. SHANDONG SUNWAY LANDSCAPE TECHNOLOGY COMPANY 315
  5. SHENZHEN BATIAN ECOTYPIC ENGINEERING COMPANY 253
  6. GUIZHOU UNIVERSITY 251
  7. GUILIN JIEYU ENVIRONMENTAL PROTECTION SCIENCE & TECHNOLOGY COMPANY 236
  8. GUANGXI ACADEMY OF AGRICULTURAL SCIENCES 205
  9. CHINA AGRICULTURAL UNIVERSITY 197
  10. KOCH AGRONOMIC SERVICES US 194