Polycarboxylic acids; Anhydrides, halides or low molecular weight esters thereof

Polycarboxylic acids; Anhydrides, halides or low molecular weight esters thereof · 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 codeC08G59/42
Official titlePolycarboxylic acids; Anhydrides, halides or low molecular weight esters thereof
Display labelPolycarboxylic acids; Anhydrides, halides or low molecular weight esters thereof
Total patents458

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
201535
201653
201749
201834
201953
202046
202140
202235
202336
202430
202543
20264

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 C08G59/42?
CPC C08G59/42 is the Cooperative Patent Classification code for “Polycarboxylic acids; Anhydrides, halides or low molecular weight esters thereof.”
How many patents are filed under CPC C08G59/42 (Polycarboxylic acids; Anhydrides, halides or low molecular weight esters thereof)?
Our database includes 458 publications tagged with this CPC code.
Is patent activity under CPC C08G59/42 growing?
Publication counts under this code: 30 in 2024 vs 43 in 2025 (latest complete years).