CPC Subgroup
C09K 19/10 containing at least two benzene rings
Full Title
Liquid crystal materials > characterised by the chemical structure of the liquid crystal components > Non-steroidal liquid crystal compounds > containing at least two non-condensed rings > containing at least two benzene rings
6 direct subcodes
Child Classifications
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- C09K 19/12 at least two benzene rings directly linked, e.g. biphenyls
- C09K 19/14 linked by a carbon chain
- C09K 19/20 linked by a chain containing carbon and oxygen atoms as chain links, e.g. esters
- C09K 19/22 linked by a chain containing carbon and nitrogen atoms as chain links, e.g. Schiff bases
- C09K 19/24 linked by a chain containing nitrogen-to-nitrogen bonds
- C09K 19/28 linked by a chain containing carbon and sulfur atoms as chain links, e.g. thioesters
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