Fiber production method and carbon fiber production method
US-2020407885-A1 · Dec 31, 2020 · US
comprising unsaturated nitriles as the major constituent
comprising unsaturated nitriles as the major constituent · 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 | D01F6/38 |
| Official title | comprising unsaturated nitriles as the major constituent |
| Display label | comprising unsaturated nitriles as the major constituent |
| Total patents | 141 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 6 |
| 2017 | 10 |
| 2018 | 9 |
| 2019 | 13 |
| 2020 | 17 |
| 2021 | 14 |
| 2022 | 16 |
| 2023 | 10 |
| 2024 | 18 |
| 2025 | 16 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Acrylonitrile-containing fiber dyeable with disperse dyes, method for producing same, and fiber product containing same
US-10760185-B2 · Sep 1, 2020 · US
Carbon-fiber-precursor fiber bundle, carbon fiber bundle, and uses thereof
US-2020263327-A1 · Aug 20, 2020 · US
Precursor stabilisation process
US-2020248339-A1 · Aug 6, 2020 · US
Carbon fiber bundle and method of manufacturing same
US-2020190705-A1 · Jun 18, 2020 · US
Method for producing acrylonitrile-based fiber
US-2020190701-A1 · Jun 18, 2020 · US
Additive for thermal production and reinforcement of carbon fiber, and carbon fiber prepared there from
US-2020165750-A1 · May 28, 2020 · US
Quad-polymer precursor for producing carbon fiber, method for producing same and method for using same
US-2020157264-A1 · May 21, 2020 · US
Method for producing polyacrylonitrile-based fiber and polyacrylonitrile-based copolymer used therein
US-2020149196-A1 · May 14, 2020 · US
Process for steam drawing carbon-fiber precursor acrylic fiber bundle
US-10604871-B2 · Mar 31, 2020 · US
Filtration materials using fiber blends that contain strategically shaped fibers and/or charge control agents
US-10571137-B2 · Feb 25, 2020 · US
Carbon fiber precursor acrylic fiber, carbon fiber, and method for producing same
US-2020002850-A1 · Jan 2, 2020 · US
Continuous method for producing a thermally stabilized multifilament thread, multifilament thread, and fiber
US-2019360126-A1 · Nov 28, 2019 · US
Acrylic fiber for artificial hair, method for producing same, and head decoration product comprising same
US-10477908-B2 · Nov 19, 2019 · US
Emulsion polymerization of nitriles and other compounds
US-2019330400-A1 · Oct 31, 2019 · US
Flame-retardant fabric, method for producing same and fireprotective clothes comprising same
US-10450679-B2 · Oct 22, 2019 · US
Acrylic fiber for artificial hair, manufacturing method therefor and head accessory containing same
US-10433605-B2 · Oct 8, 2019 · US
Carbon fiber compositions and methods of making
US-10435821-B2 · Oct 8, 2019 · US
Coagulated yarn and manufacturing method thereof, carbon fiber precursor fiber, and method of manufacturing carbon fiber
US-2019194829-A1 · Jun 27, 2019 · US
Method for producing a multifilament yarn and multifilament yarn
US-2019186051-A1 · Jun 20, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC D01F6/38?
- CPC D01F6/38 is the Cooperative Patent Classification code for “comprising unsaturated nitriles as the major constituent.”
- How many patents are filed under CPC D01F6/38 (comprising unsaturated nitriles as the major constituent)?
- Our database includes 141 publications tagged with this CPC code.
- Is patent activity under CPC D01F6/38 growing?
- Publication counts under this code: 18 in 2024 vs 16 in 2025 (latest complete years).