containing an inorganic acid

Full Title

Etching, surface-brightening or pickling compositions (for glass C03C15/00, ; for metallic material C23F, C23G1/00, C25F1/00; ) > containing an inorganic acid

3 direct subcodes

Child Classifications

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C09K 13/06 with organic material
C09K 13/08 containing a fluorine compound
C09K 13/10 containing a boron compound

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