CPC Main Group
C07C 311/00 Amides of sulfonic acids, i.e. compounds having singly-bound oxygen atoms of sulfo groups replaced by nitrogen atoms, not being part of nitro or nitroso groups
8 direct subcodes
Child Classifications
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- C07C 311/01 Sulfonamides having sulfur atoms of sulfonamide groups bound to acyclic carbon atoms
- C07C 311/14 Sulfonamides having sulfur atoms of sulfonamide groups bound to carbon atoms of rings other than six-membered aromatic rings
- C07C 311/15 Sulfonamides having sulfur atoms of sulfonamide groups bound to carbon atoms of six-membered aromatic rings
- C07C 311/22 Sulfonamides, the carbon skeleton of the acid part being further substituted by singly-bound oxygen atoms
- C07C 311/30 Sulfonamides, the carbon skeleton of the acid part being further substituted by singly-bound nitrogen atoms, not being part of nitro or nitroso groups
- C07C 311/48 having nitrogen atoms of sulfonamide groups further bound to another hetero atom
- C07C 311/50 Compounds containing any of the groups [IMAGE cpc-sch-C07C-0977.gif], X being a hetero atom, Y being any atom
- C07C 311/65 N-sulfonylisocyanates
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