CPC Subgroup
C07D 473/02 with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6
Full Title
Heterocyclic compounds containing purine ring systems > with oxygen, sulphur, or nitrogen atoms directly attached in positions 2 and 6
6 direct subcodes
Child Classifications
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- C07D 473/04 two oxygen atoms
- C07D 473/16 two nitrogen atoms
- C07D 473/18 one oxygen and one nitrogen atom, e.g. guanine
- C07D 473/20 two sulfur atoms
- C07D 473/22 one oxygen and one sulfur atom
- C07D 473/24 one nitrogen and one sulfur atom
Top Applicants
Top 10 applicants by patent filingsfor 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