Surface-active compounds containing sulfur (SO3 and SO4, C11D1/12; sulfonium compounds C11D1/60; sulfoxides C11D1/755; sulfobetaines C11D1/92)

Surface-active compounds containing sulfur (SO3 and SO4, C11D1/12; sulfonium compounds C11D1/60; sulfoxides C11D1/755; sulfobetaines C11D1/92) · 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 codeC11D1/002
Official title{Surface-active compounds containing sulfur (SO3 and SO4, C11D1/12; sulfonium compounds C11D1/60; sulfoxides C11D1/755; sulfobetaines C11D1/92)}
Display labelSurface-active compounds containing sulfur (SO3 and SO4, C11D1/12; sulfonium compounds C11D1/60; sulfoxides C11D1/755; sulfobetaines C11D1/92)
Total patents98

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
201518
201617
201714
20186
20199
20209
20214
20224
20234
20249
20253
20261

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 C11D1/002?
CPC C11D1/002 is the Cooperative Patent Classification code for “Surface-active compounds containing sulfur (SO3 and SO4, C11D1/12; sulfonium compounds C11D1/60; sulfoxides C11D1/755; sulfobetaines C11D1/92).”
How many patents are filed under CPC C11D1/002 (Surface-active compounds containing sulfur (SO3 and SO4, C11D1/12; sulfonium compounds C11D1/60; sulfoxides C11D1/755; sulfobetaines C11D1/92))?
Our database includes 98 publications tagged with this CPC code.
Is patent activity under CPC C11D1/002 growing?
Publication counts under this code: 9 in 2024 vs 3 in 2025 (latest complete years).