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
Full Title
Compositional and structural details of pigments exhibiting interference colours > Interference pigments characterised by the thickness of the core or layers thereon or by the total thickness of the final pigment particle
Filing statistics
CPC C09C 2200/30 belongs to the parent subclass C09C, which recorded 24,571 patent applications worldwide between 2013 and 2023. Annual filings declined from 2,162 in 2013 to 1,562 in 2023 (-28%), peaking at 2,738 applications in 2016. The most active applicants in class C09 are LG CHEM (7,954 applications), HALLIBURTON ENERGY SERVICES GROUP (6,584 applications) and NITTO DENKO CORPORATION (6,500 applications).
Source: EPO PATSTAT, worldwide filings
8 direct subcodes
Child Classifications
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- C09C 2200/301 Thickness of the core
- C09C 2200/302 Thickness of a layer with high refractive material
- C09C 2200/303 Thickness of a layer with low refractive material
- C09C 2200/304 Thickness of intermediate layers adjacent to the core, e.g. metallic layers, protective layers, rutilisation enhancing layers or reflective layers
- C09C 2200/305 Thickness of intermediate layers within the stack
- C09C 2200/306 Thickness of an absorbing layer
- C09C 2200/307 Thickness of an outermost protective layer
- C09C 2200/308 Total thickness of the pigment particle
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