Preparation from starting materials already containing the anthracene nucleus

Full Title

Dyes with anthracene nucleus not condensed with any other ring > Amino-anthraquinones > Preparation from starting materials already containing the anthracene nucleus

10 direct subcodes

Child Classifications

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C09B 1/201
C09B 1/202
C09B 1/205
C09B 1/206
C09B 1/207
C09B 1/208
C09B 1/22 Dyes with unsubstituted amino groups
C09B 1/26 Dyes with amino groups substituted by hydrocarbon radicals
C09B 1/36 Dyes with acylated amino groups
C09B 1/48 Anthrimides

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