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IPC Subclass
C05G

MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS; MIXTURES OF ONE OR MORE FERTILISERS WITH ADDITIVES NOT HAVING A SPECIFIC FERTILISING ACTIVITY; FERTILISERS CHARACTERISED BY THEIR FORM

Introduced: September 1968

Last revised: January 1985

Classification Context

Section:
CHEMISTRY; METALLURGY
Class:
FERTILISERS; MANUFACTURE THEREOF
Subclass:
MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS; MIXTURES OF ONE OR MORE FERTILISERS WITH ADDITIVES NOT HAVING A SPECIFIC FERTILISING ACTIVITY; FERTILISERS CHARACTERISED BY THEIR FORM

Description

C05G covers fertilizer compositions that combine multiple fertilizer types classified under different C05 subclasses, as well as fertilizer formulations with non-nutritive additives such as binders, anti-caking agents, colorants, or soil conditioners. This subclass also encompasses fertilizers defined primarily by their physical form (granules, pellets, coated products, suspensions, gels) rather than their chemical composition alone. The classification captures complex, multi-component fertilizer products that do not fit neatly into single-fertilizer-type categories defined by other C05 subclasses.

Filing statistics

IPC subclass C05G recorded 90,565 patent applications worldwide between 2013 and 2023. Annual filings declined from 5,425 in 2013 to 4,339 in 2023 (-20%), peaking at 15,928 applications in 2017. 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

Additional Content

Glossary

Fertiliser fertilisers (fertiliser material) Natural or artificial substance containing the chemical elements that improve growth and productiveness of plants.

Limiting references

Organic fertilisers containing added bacterial cultures, mycelia or the like Fertilisers containing plant vitamins or hormones

Related Keywords

mixtures of different FERTILISERS

3 direct subcodes

Child Classifications

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Top Applicants

Top 10 applicants by patent filingsfor 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