CPC Subgroup
C11D 1/38 Cationic compounds
Full Title
Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent > Cationic compounds
Filing statistics
CPC C11D 1/38 belongs to the parent subclass C11D, which recorded 71,260 patent applications worldwide between 2013 and 2023. Annual filings declined from 5,395 in 2013 to 4,424 in 2023 (-18%), peaking at 9,286 applications in 2017. The most active applicants in class C11 are P&G (PROCTER & GAMBLE COMPANY) (6,498 applications), HENKEL (3,445 applications) and BASF (BADISCHE ANILIN & SODA FABRIK) (2,409 applications).
Source: EPO PATSTAT, worldwide filings
15 direct subcodes
Child Classifications
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- C11D 1/40 Monoamines or polyamines; Salts thereof
- C11D 1/42 Amino alcohols or amino ethers
- C11D 1/46 Esters of carboxylic acids with amino alcohols; Esters of amino carboxylic acids with alcohols
- C11D 1/48 N-containing polycondensation products
- C11D 1/50 Derivatives of urea, thiourea, cyanamide, guanidine or urethanes
- C11D 1/52 Carboxylic amides, alkylolamides or imides
- C11D 1/54 Hydrazides of carboxylic acids
- C11D 1/56 containing nitro or nitroso groups
- C11D 1/58 Heterocyclic compounds
- C11D 1/60 Sulfonium or phosphonium compounds
- C11D 1/62 Quaternary ammonium compounds
- C11D 1/64 of unknown constitution
- C11D 1/645 Mixtures of compounds all of which are cationic
- C11D 1/65 Mixtures of anionic with cationic compounds
Top Applicants
Top 10 applicants by patent filingsfor class C11, 2013–2023, worldwide · Source: EPO PATSTAT
- P&G (PROCTER & GAMBLE COMPANY) US 6,498
- HENKEL DE 3,445
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 2,409
- ECOLAB US 1,614
- NOVOZYMES DK 1,609
- UNILEVER NL 1,468
- UNILEVER IP HOLDINGS NL 1,246
- CONOPCO, INC., D/B/A UNILEVER US 1,048
- UNILEVER GB 1,039
- FIRMENICH CH 964