Interference pigments characterized by the core material

Full Title

Compositional and structural details of pigments exhibiting interference colours > Interference pigments characterized by the core material

Filing statistics

CPC C09C 2200/10 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

7 direct subcodes

Child Classifications

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C09C 2200/1004 the core comprising at least one inorganic oxide, e.g. Al2O3, TiO2 or SiO2
C09C 2200/102 the core consisting of glass or silicate material like mica or clays, e.g. kaolin
C09C 2200/1037 the core consisting of an inorganic suboxide or a mixture thereof, e.g. SiOx or TiOx
C09C 2200/1054 the core consisting of a metal
C09C 2200/1062 the core consisting of an organic compound, e.g. Liquid Crystal Polymers [LCP], Polymers or natural pearl essence
C09C 2200/1075 the core consisting of a mixture of inorganic and organic phases
C09C 2200/1087 the core consisting of bismuth oxychloride, magnesium fluoride, nitrides, carbides, borides, lead carbonate, barium or calcium sulfate, zinc sulphide, molybdenum disulphide or graphite

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