Sulfonamides

Sulfonamides · Cooperative Patent Classification (CPC)

Chemical and metallurgical processes, compounds, and materials.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeC08K5/435
Official titleSulfonamides
Display labelSulfonamides
Total patents207

Filing trend

Year-over-year patent counts classified under this CPC code.

Filing activity over the last five years is declining.

Patents filed per year
YearPatents
201513
201614
201716
201821
201921
202031
202122
202214
202317
202422
202514
20262

Representative patents

Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.

Frequently asked questions

Answers are generated from the same data shown on this page.

What is CPC C08K5/435?
CPC C08K5/435 is the Cooperative Patent Classification code for “Sulfonamides.”
How many patents are filed under CPC C08K5/435 (Sulfonamides)?
Our database includes 207 publications tagged with this CPC code.
Is patent activity under CPC C08K5/435 growing?
Publication counts under this code: 22 in 2024 vs 14 in 2025 (latest complete years).