Homopolymers or copolymers of styrene

Homopolymers or copolymers of styrene · 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 codeC08L25/04
Official titleHomopolymers or copolymers of styrene
Display labelHomopolymers or copolymers of styrene
Total patents318

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
201545
201639
201734
201843
201935
202033
202120
202220
202314
202419
202515
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 C08L25/04?
CPC C08L25/04 is the Cooperative Patent Classification code for “Homopolymers or copolymers of styrene.”
How many patents are filed under CPC C08L25/04 (Homopolymers or copolymers of styrene)?
Our database includes 318 publications tagged with this CPC code.
Is patent activity under CPC C08L25/04 growing?
Publication counts under this code: 19 in 2024 vs 15 in 2025 (latest complete years).