Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
CPC Subgroup
C07C 43/257

having an ether-oxygen atom bound to carbon atoms both belonging to six-membered aromatic rings

Full Title

Ethers; Compounds having [IMAGE cpc-sch-C07C-0958.gif] groups,[IMAGE cpc-sch-C07C-0959.gif] groups or[IMAGE cpc-sch-C07C-0960.gif] groups > Ethers > having an ether-oxygen atom bound to carbon atoms both belonging to six-membered aromatic rings

6 direct subcodes

Child Classifications

Navigate with arrow keys, Enter to open

  • C07C 43/263 the aromatic rings being non-condensed
  • C07C 43/267 containing other rings
  • C07C 43/275 having all ether-oxygen atoms bound to carbon atoms of six-membered aromatic rings
  • C07C 43/285 having unsaturation outside the six-membered aromatic rings
  • C07C 43/29 containing halogen
  • C07C 43/295 containing hydroxy or O-metal groups

Top Applicants

Top 10 applicants by patent filingsfor class C07, 2013–2023, worldwide · Source: EPO PATSTAT

  1. ROCHE CH 12,683
  2. NOVARTIS CH 10,775
  3. CHINESE ACADEMY OF SCIENCES 10,619
  4. BASF (BADISCHE ANILIN & SODA FABRIK) DE 9,511
  5. REGENERON PHARMACEUTICALS US 8,426
  6. BRISTOL-MYERS SQUIBB COMPANY US 7,979
  7. LG CHEM KR 7,978
  8. HARVARD UNIVERSITY US 7,706
  9. UNIVERSITY OF CALIFORNIA US 7,455
  10. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 7,219