C07D 307/90 with an oxygen atom in position 1 and a nitrogen atom in position 3, or vice versa
Introduced: July 1974
Title
Titles differ between systems:
IPC: with an oxygen atom in position 1 and a nitrogen atom in position 3, or
CPC: with an oxygen atom in position 1 and a nitrogen atom in position 3, or vice versa
Full Title
Full titles differ between systems:
Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom > ortho- or peri-condensed with carbocyclic rings or ring systems > Benzo [c] furans; Hydrogenated benzo [c] furans > with an oxygen atom in position 1 and a nitrogen atom in position 3, or
Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom > ortho- or peri-condensed with carbocyclic rings or ring systems > Benzo [c] furans; Hydrogenated benzo [c] furans > with an oxygen atom in position 1 and a nitrogen atom in position 3, or vice versa
No child classifications to compare. This is a leaf node in both IPC and CPC.
Top Applicants
Top Applicants (IPC)
Class C07,2013–2023, worldwide · Source: EPO PATSTAT
- CHINESE ACADEMY OF SCIENCES 12,697
- ROCHE CH 11,347
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 11,024
- NOVARTIS CH 9,356
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 8,531
- BRISTOL-MYERS SQUIBB COMPANY US 7,320
- LG CHEM KR 7,245
- REGENERON PHARMACEUTICALS US 6,816
- HARVARD UNIVERSITY US 6,190
- GENENTECH US 5,922
Top Applicants (CPC)
Class C07,2013–2023, worldwide · Source: EPO PATSTAT
- ROCHE CH 12,683
- NOVARTIS CH 10,775
- CHINESE ACADEMY OF SCIENCES 10,619
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 9,511
- REGENERON PHARMACEUTICALS US 8,426
- BRISTOL-MYERS SQUIBB COMPANY US 7,979
- LG CHEM KR 7,978
- HARVARD UNIVERSITY US 7,706
- UNIVERSITY OF CALIFORNIA US 7,455
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 7,219