D01F 8/08
With at least one polyacrylonitrile as constituent
Official title: with at least one polyacrylonitrile as constituent
D01F8/08 (With at least one polyacrylonitrile as constituent) appears on 69 US grants and 45 published applications in this corpus.
Search patents in D01F- Granted patents
- 69
- Published applications
- 45
- Assignees
- 53
- Inventors
- 219
- Latest grant
- 13 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 4 | 0 |
| 1982 | 8 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 6 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 5 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 2 |
| 2005 | 1 | 2 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 1 |
| 2015 | 0 | 1 |
| 2016 | 0 | 1 |
| 2017 | 1 | 4 |
| 2018 | 1 | 3 |
| 2019 | 2 | 2 |
| 2020 | 2 | 4 |
| 2021 | 1 | 3 |
| 2022 | 1 | 4 |
| 2023 | 3 | 6 |
| 2024 | 4 | 2 |
| 2025 | 2 | 6 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Phase change flame retardant fiber material and preparation method for thermal management of lithium-ion battery in enclosed space13 Jan 2026US 12,522,953 B2
- Flexible ignition resistant non-electrically conductive biregional fibers, articles made from non-non-electrically conductive biregional fibers, and methods of manufacture11 Mar 2025US 12,247,326 B2Mariposa Monarca, LLC
- Method of delaying and reducing texture reversion of a textured artificial turf yarn11 Mar 2025US 12,247,327 B2Polytex Sportbelage Produktions-GmbH
- Skin-core structure fibers with both infrared and radar stealth, preparation method therefor, and use thereof1 Oct 2024US 12,104,882 B2Nantong University
- Method for producing hollow activated carbon nanofiber for activating peroxymonosulfate, catalyst for purifying water, and method for purifying water14 May 2024US 11,980,873 B2UIF (University Industry Foundation), Yonsei University
- Composite fiber and method for manufacturing the same13 Nov 2025US 2025/0347032 A1Hyundai Motor Company
- Melt spinning lignin/acrylic fibers6 Nov 2025US 2025/0341031 A1North Carolina State University
- Biologically Degradable MULTI-COMPONENT POLYMER FIBRES11 Sep 2025US 2025/0283252 A1
- Process for making pure, blended, and coaxial fire-resistant nanofibers28 Aug 2025US 2025/0270738 A1D.J. Irvin Company, LLC
- Flexible ignition resistant non-electrically conductive biregional fibers, articles made from non- non-electrically conductive biregional fibers, and methods of manufacture28 Aug 2025US 2025/0270741 A1Mariposa Monarca, LLC
Most cited
By later US patents
- Dissociable multicomponent fibers containing a polyacrylonitrile polymer component50US 6,583,075 B1Fiber Innovation Technology, Inc. · 2003
- Two-component mixed acrylic fibres wherein acrylic components have different amounts of non-ionizable plasticizing comonomer49US 4,297,412 ARhone-Poulenc-Textile · 1981
- High speed spinning of sheath/core bicomponent fibers38US 6,332,994 B1BASF SE · 2001
- Spinning pack for wet spinning bicomponent filaments34US 5,017,116 AMonsanto Company · 1991
- Bicomponent acrylic fiber30US 4,309,475 AE. I. Du Pont de Nemours and Company · 1982