obtained by reactions involving only carbon-to-carbon unsaturated bonds

obtained by reactions involving only carbon-to-carbon unsaturated bonds · 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 codeC03C25/28
Official titleobtained by reactions involving only carbon-to-carbon unsaturated bonds
Display labelobtained by reactions involving only carbon-to-carbon unsaturated bonds
Total patents40

Filing trend

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

Filing activity over the last five years is stable.

Patents filed per year
YearPatents
20154
20164
20172
20183
20191
20202
20216
20222
20233
20244
20257
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 C03C25/28?
CPC C03C25/28 is the Cooperative Patent Classification code for “obtained by reactions involving only carbon-to-carbon unsaturated bonds.”
How many patents are filed under CPC C03C25/28 (obtained by reactions involving only carbon-to-carbon unsaturated bonds)?
Our database includes 40 publications tagged with this CPC code.
Is patent activity under CPC C03C25/28 growing?
Publication counts under this code: 4 in 2024 vs 7 in 2025 (latest complete years).