D01F 6/28
From copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
Official title: from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
D01F6/28 (From copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds) appears on 567 US grants and 598 published applications in this corpus.
Search patents in D01F- Granted patents
- 567
- Published applications
- 598
- Assignees
- 317
- Inventors
- 1,687
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 18 | 0 |
| 1977 | 14 | 0 |
| 1978 | 10 | 0 |
| 1979 | 3 | 0 |
| 1980 | 14 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 5 | 0 |
| 1986 | 4 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 8 | 0 |
| 1990 | 4 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 5 | 0 |
| 1994 | 6 | 0 |
| 1995 | 13 | 0 |
| 1996 | 21 | 0 |
| 1997 | 5 | 0 |
| 1998 | 18 | 0 |
| 1999 | 13 | 0 |
| 2000 | 15 | 0 |
| 2001 | 11 | 3 |
| 2002 | 14 | 11 |
| 2003 | 11 | 18 |
| 2004 | 11 | 16 |
| 2005 | 14 | 27 |
| 2006 | 10 | 22 |
| 2007 | 9 | 22 |
| 2008 | 2 | 17 |
| 2009 | 7 | 19 |
| 2010 | 10 | 20 |
| 2011 | 16 | 25 |
| 2012 | 13 | 19 |
| 2013 | 7 | 22 |
| 2014 | 8 | 18 |
| 2015 | 17 | 30 |
| 2016 | 13 | 31 |
| 2017 | 14 | 30 |
| 2018 | 20 | 34 |
| 2019 | 20 | 28 |
| 2020 | 29 | 35 |
| 2021 | 12 | 29 |
| 2022 | 19 | 30 |
| 2023 | 19 | 28 |
| 2024 | 32 | 29 |
| 2025 | 21 | 24 |
| 2026 | 8 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- D01F 6/30Comprising olefins as the major constituent221
- D01F 6/38Comprising unsaturated nitriles as the major constituent144
- D01F 6/32Comprising halogenated hydrocarbons as the major constituent74
- D01F 6/40Modacrylic fibres, i.e. containing 35 to 85% acrylonitrile63
- D01F 6/36Comprising unsaturated carboxylic acids or unsaturated organic esters as the major constituent44
- D01F 6/42Comprising cyclic compounds containing one carbon-to-carbon double bond in the side chain37
- D01F 6/34Comprising unsaturated alcohols, acetals or ketals as the major constituent27
Recent patents
- Colored fiber, method for manufacturing colored fiber, and fiber product29 Sep 2026US 12,747,518 B2Kaneka Corporation
- Block copolymer porous carbon fibers and uses thereof25 Aug 2026US 12,715,819 B2Virginia Tech Intellectual Properties, Inc.
- Antibacterial acrylic artificial hair fibers, hair ornament product including same, and method for producing same18 Aug 2026US 12,709,836 B2Kaneka Corporation
- Composition of reclaimed synthetic turf and products comprising same11 Aug 2026US 12,703,950 B1Columbia Insurance Company
- Ultraviolet blocking acrylic fibers, ultraviolet blocking fabric and fiber product containing the same, and method for manufacturing the same23 Jun 2026US 12,662,756 B2Kaneka Corporation
- Carbon fiber precursor fiber bundle, thermally-stabilized fiber bundle, production method thereof, and method for producing carbon fiber bundle24 Sep 2026US 2026/0286575 A1Kabushiki Kaisha Toyota Chuo Kenkyusho
- Copolymer composition, method for producing same, and molded article obtained using copolymer composition10 Sep 2026US 2026/0265433 A1Kuraray Co., Ltd.
- Production method for carbon fiber precursor fibers3 Sep 2026US 2026/0258580 A1Teijin Limited
- Polyvinyl alcohol fiber and method for producing same27 Aug 2026US 2026/0250886 A1Kuraray Co., Ltd.
- Preparation method of high-temperature-resistant polyacrylonitrile-based carbon fibre and its application in fireproof fabric13 Aug 2026US 2026/0234839 A1Wuxi Tanyan Technology Co., Ltd.
Most cited
By later US patents
- Fibers of polyolefin polymers280US 5,322,728 AExxon Chemical Patents Inc. · 1994
- Isotactic propylene copolymers, their preparation and use180US 6,960,635 B2Dow Global Technologies LLC · 2005
- Piezoelectric biomedical device155US 5,522,879 AEthicon, Inc. · 1996
- Fibers and oriented films of polypropylene higher .alpha.-olefin copolymers138US 5,571,619 AExxon Chemical Patents Inc. · 1996
- Coformed ethylene-vinyl copolymer elastomeric fibrous webs112US 4,803,117 AKimberly-Clark Corporation · 1989