Homopolymers or copolymers of acrylamide or methacrylamide

Homopolymers or copolymers of acrylamide or methacrylamide · 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 codeC09J133/26
Official titleHomopolymers or copolymers of acrylamide or methacrylamide
Display labelHomopolymers or copolymers of acrylamide or methacrylamide
Total patents205

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
201519
201614
201728
201817
201922
202023
202122
202216
202314
202415
202514
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 C09J133/26?
CPC C09J133/26 is the Cooperative Patent Classification code for “Homopolymers or copolymers of acrylamide or methacrylamide.”
How many patents are filed under CPC C09J133/26 (Homopolymers or copolymers of acrylamide or methacrylamide)?
Our database includes 205 publications tagged with this CPC code.
Is patent activity under CPC C09J133/26 growing?
Publication counts under this code: 15 in 2024 vs 14 in 2025 (latest complete years).