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PCE
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DIFF Subgroup
C07C 41/18

by reactions not forming ether-oxygen bonds

Introduced: January 1980

Full Title

Full titles differ between systems:

IPC:

Preparation of ethers; Preparation of compounds having groups, groups or groups > Preparation of ethers > by reactions not forming ether-oxygen bonds

CPC:

Preparation of ethers; Preparation of compounds having [IMAGE cpc-sch-C07C-0958.gif] groups,[IMAGE cpc-sch-C07C-0959.gif] groups or[IMAGE cpc-sch-C07C-0960.gif] groups > Preparation of ethers > by reactions not forming ether-oxygen bonds

IPC and CPC are identically structured here. All 6 subcodes exist in both systems.

2 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1980.

Child Classifications

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  • C07C 41/20 by hydrogenation of carbon-to-carbon double or triple bonds since 1980 IPC+CPC Available in IPC and CPC
  • C07C 41/22 by introduction of halogens; by substitution of halogen atoms by other halogen atoms since 1980 IPC+CPC Available in IPC and CPC
  • C07C 41/24 by elimination of halogens, e.g. elimination of HCl since 1980 IPC+CPC Available in IPC and CPC
  • C07C 41/26 by introduction of hydroxy or O-metal groups since 1980 IPC+CPC Available in IPC and CPC
  • C07C 41/28 from acetals, e.g. by dealcoholysis since 1980 IPC+CPC Available in IPC and CPC
  • C07C 41/30 by increasing the number of carbon atoms, e.g. by oligomerisation since 1980 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class C07,2013–2023, worldwide · Source: EPO PATSTAT

  1. CHINESE ACADEMY OF SCIENCES 12,697
  2. ROCHE CH 11,347
  3. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 11,024
  4. NOVARTIS CH 9,356
  5. BASF (BADISCHE ANILIN & SODA FABRIK) DE 8,531
  6. BRISTOL-MYERS SQUIBB COMPANY US 7,320
  7. LG CHEM KR 7,245
  8. REGENERON PHARMACEUTICALS US 6,816
  9. HARVARD UNIVERSITY US 6,190
  10. GENENTECH US 5,922

Top Applicants (CPC)

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