IPC 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
Introduced: January 1990
Last revised: January 2006
Classification Context
- Section:
- CHEMISTRY; METALLURGY
- Class:
- ORGANIC CHEMISTRY
- Subclass:
- ACYCLIC OR CARBOCYCLIC COMPOUNDS
Related Keywords
AMINO sulfonic acidsSULFONATED compoundsSULFONIC acids, esters, halides, anhydrides or amides thereof
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 311/3 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 311/5 Compounds containing any of the groups 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
- 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