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CPC Subgroup
C07C 271/42

with the nitrogen atoms of the carbamate groups bound to hydrogen atoms or to acyclic carbon atoms

Full Title

Derivatives of carbamic acids, i.e. compounds containing any of the groups [IMAGE cpc-sch-C07C-0964.gif], the nitrogen atom not being part of nitro or nitroso groups > Esters of carbamic acids > having oxygen atoms of carbamate groups bound to carbon atoms of six-membered aromatic rings > with the nitrogen atoms of the carbamate groups bound to hydrogen atoms or to acyclic carbon atoms

6 direct subcodes

Child Classifications

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  • C07C 271/44 to hydrogen atoms or to carbon atoms of unsubstituted hydrocarbon radicals
  • C07C 271/46 to carbon atoms of hydrocarbon radicals substituted by halogen atoms or by nitro or nitroso groups
  • C07C 271/48 to carbon atoms of hydrocarbon radicals substituted by singly-bound oxygen atoms
  • C07C 271/50 to carbon atoms of hydrocarbon radicals substituted by doubly-bound oxygen atoms
  • C07C 271/52 to carbon atoms of hydrocarbon radicals substituted by nitrogen atoms not being part of nitro or nitroso groups
  • C07C 271/54 to carbon atoms of hydrocarbon radicals substituted by carboxyl 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