CPC Main Group Additional Only
C09C 2200/00 Compositional and structural details of pigments exhibiting interference colours
6 direct subcodes
Child Classifications
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- C09C 2200/10 Interference pigments characterized by the core material
- C09C 2200/20 Interference pigments comprising a layer with a concentration gradient or a gradient of the refractive index
- C09C 2200/24 Interference pigments comprising a metallic reflector or absorber layer, which is not adjacent to the core
- C09C 2200/30 Interference pigments characterised by the thickness of the core or layers thereon or by the total thickness of the final pigment particle
- C09C 2200/40 Interference pigments comprising an outermost surface coating
- C09C 2200/50 Interference pigments comprising a layer or a core consisting of or comprising discrete particles, e.g. nanometric or submicrometer-sized particles
Top Applicants
Top 10 applicants by patent filingsfor 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