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IPC Subgroup
C08B 11/16

Aryl or aralkyl ethers

Introduced: September 1968

Last revised: January 2006

Full Title

Preparation of cellulose ethers > Aryl or aralkyl ethers

Classification Context

Section:
CHEMISTRY; METALLURGY
Class:
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
Subclass:
POLYSACCHARIDES; DERIVATIVES THEREOF

Filing statistics

IPC C08B 11/16 belongs to the parent subclass C08B, which recorded 45,717 patent applications worldwide between 2013 and 2023. Annual filings grew from 3,749 in 2013 to 4,019 in 2023 (+7%), peaking at 4,728 applications in 2018. The most active applicants in class C08 are LG CHEM (14,262 applications), DOW GLOBAL TECHNOLOGIES (12,486 applications) and BASF (BADISCHE ANILIN & SODA FABRIK) (9,858 applications).

Source: EPO PATSTAT, worldwide filings

1 direct subcode

Child Classifications

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  • C08B 11/18 with substituted hydrocarbon radicals

Top Applicants

Top 10 applicants by patent filingsfor class C08, 2013–2023, worldwide · Source: EPO PATSTAT

  1. LG CHEM KR 14,262
  2. DOW GLOBAL TECHNOLOGIES US 12,486
  3. BASF (BADISCHE ANILIN & SODA FABRIK) DE 9,858
  4. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 7,877
  5. CHINESE ACADEMY OF SCIENCES 6,993
  6. FUJIFILM JP 5,049
  7. 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 4,923
  8. SHIN-ETSU CHEMICAL COMPANY JP 4,517
  9. BOREALIS AT 4,213
  10. ARKEMA FR 4,098