DIFF Main Group
C09B 69/00 Dyes not provided for by a single group of this subclass
Introduced: July 1974
Of 6 combined children, 3 exist in both systems.
3 codes are CPC-only extensions.
IPC defines codes here since 1980.
Child Classifications
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- C09B 69/02 Dyestuff salts, e.g. salts of acid dyes with basic dyes since 1980 IPC+CPC Available in IPC and CPC
- C09B 69/08 Dyes containing a splittable water solubilising group since 1980 IPC+CPC Available in IPC and CPC
- C09B 69/10 Polymeric dyes; Reaction products of dyes with monomers or with macromolecular compounds since 1980 +8 CPC IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class C09,2013–2023, worldwide · Source: EPO PATSTAT
- LG CHEM KR 6,420
- NITTO DENKO CORPORATION JP 5,752
- HALLIBURTON ENERGY SERVICES GROUP US 5,650
- 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 5,635
- DOW GLOBAL TECHNOLOGIES US 4,844
- MERCK PATENT DE 4,779
- CHINESE ACADEMY OF SCIENCES 4,311
- FUJIFILM JP 4,205
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 4,039
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 3,931
Top Applicants (CPC)
Class C09,2013–2023, worldwide · Source: EPO PATSTAT
- LG CHEM KR 7,954
- HALLIBURTON ENERGY SERVICES GROUP US 6,584
- NITTO DENKO CORPORATION JP 6,500
- 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 6,490
- DOW GLOBAL TECHNOLOGIES US 6,324
- FUJIFILM JP 5,832
- MERCK PATENT DE 5,481
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 5,147
- SAMSUNG DISPLAY KR 5,105
- NITTO DENKO CORPORATION 3,584