polyesters; polyethers; polyacetals

polyesters; polyethers; polyacetals · Cooperative Patent Classification (CPC)

Electric circuits, power, telecommunications, and semiconductors.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeH01B3/42
Official titlepolyesters; polyethers; polyacetals
Display labelpolyesters; polyethers; polyacetals
Total patents81

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
201510
20169
20178
20189
20199
202012
20214
20224
20235
20247
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 H01B3/42?
CPC H01B3/42 is the Cooperative Patent Classification code for “polyesters; polyethers; polyacetals.”
How many patents are filed under CPC H01B3/42 (polyesters; polyethers; polyacetals)?
Our database includes 81 publications tagged with this CPC code.
Is patent activity under CPC H01B3/42 growing?
Publication counts under this code: 7 in 2024 vs 3 in 2025 (latest complete years).