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IPC Subgroup
C11D 13/3

Recovery of soap, e.g. from spent solutions

Introduced: September 1968

Last revised: January 2006

Full Title

Making of soap or soap solutions in general; Apparatus therefor > Recovery of soap, e.g. from spent solutions

Classification Context

Section:
CHEMISTRY; METALLURGY
Class:
ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
Subclass:
DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL

Filing statistics

IPC C11D 13/3 belongs to the parent subclass C11D, which recorded 72,890 patent applications worldwide between 2013 and 2023. Annual filings declined from 6,450 in 2013 to 4,534 in 2023 (-30%), peaking at 9,081 applications in 2017. The most active applicants in class C11 are P&G (PROCTER & GAMBLE COMPANY) (5,930 applications), HENKEL (3,288 applications) and BASF (BADISCHE ANILIN & SODA FABRIK) (2,162 applications).

Source: EPO PATSTAT, worldwide filings

Top Applicants

Top 10 applicants by patent filingsfor class C11, 2013–2023, worldwide · Source: EPO PATSTAT

  1. P&G (PROCTER & GAMBLE COMPANY) US 5,930
  2. HENKEL DE 3,288
  3. BASF (BADISCHE ANILIN & SODA FABRIK) DE 2,162
  4. ECOLAB US 1,454
  5. UNILEVER NL 1,430
  6. NOVOZYMES DK 1,366
  7. UNILEVER IP HOLDINGS NL 1,227
  8. CONOPCO, INC., D/B/A UNILEVER US 1,022
  9. KAO CORPORATION 947
  10. KAO CORPORATION JP 853