Organic per-compounds (C11D3/3902 takes precedence)

Organic per-compounds (C11D3/3902 takes precedence) · 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 codeC11D3/3945
Official title{Organic per-compounds (C11D3/3902 takes precedence)}
Display labelOrganic per-compounds (C11D3/3902 takes precedence)
Total patents133

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
201614
201718
20189
201916
202012
202114
20221
20238
202411
202511
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 C11D3/3945?
CPC C11D3/3945 is the Cooperative Patent Classification code for “Organic per-compounds (C11D3/3902 takes precedence).”
How many patents are filed under CPC C11D3/3945 (Organic per-compounds (C11D3/3902 takes precedence))?
Our database includes 133 publications tagged with this CPC code.
Is patent activity under CPC C11D3/3945 growing?
Publication counts under this code: 11 in 2024 vs 11 in 2025 (latest complete years).