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IPC Subgroup
C07D 405/02

containing two hetero rings

Introduced: July 1974

Last revised: January 2006

Full Title

Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom > containing two hetero rings

Classification Context

Section:
CHEMISTRY; METALLURGY
Class:
ORGANIC CHEMISTRY
Subclass:
HETEROCYCLIC COMPOUNDS

5 direct subcodes

Child Classifications

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  • C07D 405/04 directly linked by a ring-member-to-ring- member bond
  • C07D 405/06 linked by a carbon chain containing only aliphatic carbon atoms
  • C07D 405/08 linked by a carbon chain containing alicyclic rings
  • C07D 405/1 linked by a carbon chain containing aromatic rings
  • C07D 405/12 linked by a chain containing hetero atoms as chain links

Top Applicants

Top 10 applicants by patent filingsfor 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