Carbon fiber precursor fiber, fiber for carbon fiber precursor fiber, method of producing carbon fiber precursor fiber, method of producing stabilized fiber, and method of producing carbon fiber
US-12503795-B2 · Dec 23, 2025 · US
from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds · Cooperative Patent Classification (CPC)
Textile and paper production, treatment, and products.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | D01F6/28 |
| Official title | from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds |
| Display label | from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds |
| Total patents | 28 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 3 |
| 2017 | 3 |
| 2018 | 4 |
| 2020 | 2 |
| 2021 | 1 |
| 2022 | 3 |
| 2023 | 4 |
| 2024 | 1 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Composite fiber
US-12338552-B2 · Jun 24, 2025 · US
Process for preparing carbon fibers from low polydispersity polyacrylonitrile
US-12258683-B2 · Mar 25, 2025 · US
Single threaded composite fibers and yarns for the degradation of and protection against toxic chemicals and biological agents
US-11975313-B1 · May 7, 2024 · US
Single threaded composite fibers and yarns for the degradation of and protection against toxic chemicals and biological agents
US-11648548-B1 · May 16, 2023 · US
Carbon fiber precursor, method of producing carbon fiber precursor, method of producing stabilized fiber, and method of producing carbon fiber
US-2023129865-A1 · Apr 27, 2023 · US
Carbon fiber precursor fiber, fiber for carbon fiber precursor fiber, method of producing carbon fiber precursor fiber, method of producing stabilized fiber, and method of producing carbon fiber
US-2023126217-A1 · Apr 27, 2023 · US
Nanofiber for air filter comprising random copolymer having zwitterionic functional group and method for manufacturing same
US-2023059080-A1 · Feb 23, 2023 · US
Process for preparing carbon fibers from low polydispersity polyacrylonitrile
US-2022195627-A1 · Jun 23, 2022 · US
Carbon fiber precursor fiber bundle, thermally-stabilized fiber bundle, production method thereof, and method for producing carbon fiber bundle
US-2022170182-A1 · Jun 2, 2022 · US
Composite fiber
US-2022025553-A1 · Jan 27, 2022 · US
Single threaded composite fibers and yarns for the degradation of and protection against toxic chemicals and biological agents
US-11097261-B1 · Aug 24, 2021 · US
Hydrogenated block copolymer
US-10597481-B2 · Mar 24, 2020 · US
Hydrogenated block copolymer
US-2020079890-A1 · Mar 12, 2020 · US
Polymers
US-10092663-B2 · Oct 9, 2018 · US
Articles Comprising an Oil Capture Polymer
US-2018100250-A1 · Apr 12, 2018 · US
Print method using a three dimensional (3D) printer to provide scanning protection for printed 3D objects
US-9914262-B2 · Mar 13, 2018 · US
Hydrogenated block copolymer
US-2018030194-A1 · Feb 1, 2018 · US
Filamentous polymer particles and method for preparing same by means of controlled radical polymerisation in emulsion
US-9745399-B2 · Aug 29, 2017 · US
Print method using a three dimensional (3d) printer to provide scanning protection for printed 3d objects
US-2017151715-A1 · Jun 1, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC D01F6/28?
- CPC D01F6/28 is the Cooperative Patent Classification code for “from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds.”
- How many patents are filed under CPC D01F6/28 (from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds)?
- Our database includes 28 publications tagged with this CPC code.
- Is patent activity under CPC D01F6/28 growing?
- Publication counts under this code: 1 in 2024 vs 3 in 2025 (latest complete years).