DIFF Subgroup
C07C 309/01 Sulfonic acids
Introduced: January 1990
Full Title
Sulfonic acids; Halides, esters, or anhydrides thereof > Sulfonic acids
IPC and CPC are identically structured here. All 4 subcodes exist in both systems.
IPC defines codes here since 1990.
Child Classifications
Navigate with arrow keys, Enter to open
- C07C 309/02 having sulfo groups bound to acyclic carbon atoms since 1990 IPC+CPC Available in IPC and CPC
- C07C 309/25 having sulfo groups bound to carbon atoms of rings other than six-membered aromatic rings of a carbon skeleton since 1990 IPC+CPC Available in IPC and CPC
- C07C 309/28 having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton since 1990 IPC+CPC Available in IPC and CPC
- C07C 309/62 Sulfonated fats, oils or waxes of undetermined constitution since 1990 IPC+CPC Available in 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