• All sections
• C - Chemistrymetallurgy
• C07C - Acyclic or carbocyclic compounds
• C07C 309/52 - Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton containing nitrogen atoms, not being part of nitro or nitroso groups, bound to the carbon skeleton the carbon skeleton being further substituted by doubly-bound oxygen atoms

Patent holdings for IPC class C07C 309/52

Total number of patents in this class: 4

10-year publication summary

Principal owners for this class