Esters having no free carboxylic acid groups {, e.g. dialkyl maleates or fumarates}

Esters having no free carboxylic acid groups {, e.g. dialkyl maleates or fumarates} · 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 codeC08F222/14
Official titleEsters having no free carboxylic acid groups {, e.g. dialkyl maleates or fumarates}
Display labelEsters having no free carboxylic acid groups {, e.g. dialkyl maleates or fumarates}
Total patents219

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
201539
201628
201729
201827
201926
202024
202113
20229
202310
20246
20256
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 C08F222/14?
CPC C08F222/14 is the Cooperative Patent Classification code for “Esters having no free carboxylic acid groups {, e.g. dialkyl maleates or fumarates}.”
How many patents are filed under CPC C08F222/14 (Esters having no free carboxylic acid groups {, e.g. dialkyl maleates or fumarates})?
Our database includes 219 publications tagged with this CPC code.
Is patent activity under CPC C08F222/14 growing?
Publication counts under this code: 6 in 2024 vs 6 in 2025 (latest complete years).