Expandable thermoplastic polymer particles with a content of recycled material, and method for producing same
US-2026049194-A1 · Feb 19, 2026 · US
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.
| Metric | Value |
|---|---|
| CPC code | C08J2425/04 |
| Official title | Homopolymers or copolymers of styrene |
| Display label | Homopolymers or copolymers of styrene |
| Total patents | 51 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 3 |
| 2017 | 7 |
| 2018 | 7 |
| 2019 | 6 |
| 2020 | 6 |
| 2021 | 4 |
| 2022 | 3 |
| 2023 | 3 |
| 2024 | 5 |
| 2025 | 3 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Polyethylene film, laminate and package using the same
US-2026015474-A1 · Jan 15, 2026 · US
Polyethylene film, laminate and package using the same
US-12441857-B2 · Oct 14, 2025 · US
Porous film
US-2025125486-A1 · Apr 17, 2025 · US
Foaming and shaping process for a thermoplastic sheet, and associated apparatus and shaped foamed thermoplastic sheet
US-12233579-B2 · Feb 25, 2025 · US
Thermoplastic resin composition pellet and method for producing same
US-2024417526-A1 · Dec 19, 2024 · US
Compatibilization of recycled polyethylene-polypropylene blends
US-12104049-B2 · Oct 1, 2024 · US
Ion exchange membranes (iems) with ionic ligand-metal complex groups and methods thereof
US-2024270913-A1 · Aug 15, 2024 · US
Foaming and shaping process for a thermoplastic sheet, and associated apparatus and shaped foamed thermoplastic sheet
US-2024246267-A1 · Jul 25, 2024 · US
Resin composition, prepreg, laminate, multilayer printed wiring board, and semiconductor package
US-11905412-B2 · Feb 20, 2024 · US
Film, molded product, and method for producing film
US-11718074-B2 · Aug 8, 2023 · US
Additive for epoxy adhesive and epoxy adhesive composition for construction including same
US-11618840-B2 · Apr 4, 2023 · US
CFRP Structural Body, Method for Manufacturing CFRP Structural Body, Carbon Fiber Prepreg, and Method for Manufacturing Carbon Fiber Prepreg
US-2023080782-A1 · Mar 16, 2023 · US
Sheet-like material
US-11441260-B2 · Sep 13, 2022 · US
Compatibilization of recycled polyethylene-polypropylene blends
US-2022186011-A1 · Jun 16, 2022 · US
Resin composition, prepreg, laminate, multilayer printed wiring board, and semiconductor package
US-2022169852-A1 · Jun 2, 2022 · US
Modifier and use method thereof, modifier production method and carrier for additive
US-11118049-B2 · Sep 14, 2021 · US
Expandable vinyl aromatic polymer composition with improved mechanical and insulating properties
US-2021189084-A1 · Jun 24, 2021 · US
Foams based on thermoplastic elastomers
US-2021189088-A1 · Jun 24, 2021 · US
Methods of manufacturing articles utilizing foam particles
US-2021147650-A1 · May 20, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08J2425/04?
- CPC C08J2425/04 is the Cooperative Patent Classification code for “Homopolymers or copolymers of styrene.”
- How many patents are filed under CPC C08J2425/04 (Homopolymers or copolymers of styrene)?
- Our database includes 51 publications tagged with this CPC code.
- Is patent activity under CPC C08J2425/04 growing?
- Publication counts under this code: 5 in 2024 vs 3 in 2025 (latest complete years).