IPC Subgroup
C08B 11/14 with nitrogen-containing groups
Introduced: September 1968
Last revised: January 2006
Full Title
Preparation of cellulose ethers > Alkyl or cycloalkyl ethers > with substituted hydrocarbon radicals > with nitrogen-containing groups
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- Subclass:
- POLYSACCHARIDES; DERIVATIVES THEREOF
3 direct subcodes
Child Classifications
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- C08B 11/145 with basic nitrogen, e.g. aminoalkyl ethers
- C08B 11/15 with carbamoyl groups
- C08B 11/155 with cyano groups, e.g. cyanoalkyl ethers
Top Applicants
Top 10 applicants by patent filingsfor class C08, 2013–2023, worldwide · Source: EPO PATSTAT
- LG CHEM KR 14,262
- DOW GLOBAL TECHNOLOGIES US 12,486
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 9,858
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 7,877
- CHINESE ACADEMY OF SCIENCES 6,993
- FUJIFILM JP 5,049
- 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 4,923
- SHIN-ETSU CHEMICAL COMPANY JP 4,517
- BOREALIS AT 4,213
- ARKEMA FR 4,098