D01F 9/00
Artificial filaments or the like of other substances
Official title: Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
D01F9/00 (Artificial filaments or the like of other substances) appears on 2,629 US grants and 2,754 published applications in this corpus.
Search patents in D01F- Granted patents
- 2,629
- Published applications
- 2,754
- Assignees
- 1,252
- Inventors
- 6,079
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 29 | 0 |
| 1977 | 30 | 0 |
| 1978 | 20 | 0 |
| 1979 | 8 | 0 |
| 1980 | 11 | 0 |
| 1981 | 25 | 0 |
| 1982 | 21 | 0 |
| 1983 | 18 | 0 |
| 1984 | 39 | 0 |
| 1985 | 51 | 0 |
| 1986 | 36 | 0 |
| 1987 | 35 | 0 |
| 1988 | 32 | 0 |
| 1989 | 52 | 0 |
| 1990 | 49 | 0 |
| 1991 | 41 | 0 |
| 1992 | 28 | 0 |
| 1993 | 35 | 0 |
| 1994 | 37 | 0 |
| 1995 | 26 | 0 |
| 1996 | 33 | 0 |
| 1997 | 32 | 0 |
| 1998 | 33 | 0 |
| 1999 | 30 | 0 |
| 2000 | 20 | 0 |
| 2001 | 33 | 17 |
| 2002 | 31 | 68 |
| 2003 | 41 | 119 |
| 2004 | 59 | 98 |
| 2005 | 52 | 90 |
| 2006 | 77 | 107 |
| 2007 | 48 | 95 |
| 2008 | 48 | 104 |
| 2009 | 54 | 114 |
| 2010 | 96 | 118 |
| 2011 | 68 | 90 |
| 2012 | 60 | 98 |
| 2013 | 65 | 112 |
| 2014 | 66 | 117 |
| 2015 | 81 | 131 |
| 2016 | 93 | 131 |
| 2017 | 98 | 125 |
| 2018 | 91 | 121 |
| 2019 | 99 | 145 |
| 2020 | 86 | 140 |
| 2021 | 98 | 129 |
| 2022 | 94 | 115 |
| 2023 | 91 | 118 |
| 2024 | 113 | 117 |
| 2025 | 75 | 86 |
| 2026 | 41 | 49 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Spinning solution, and alginate fiber comprising cannabidiol, method for producing the same, and use thereof22 Sep 2026US 12,740,946 B2Pell Bio-Med Technology Co., Ltd.
- Carbon fiber bundle containing sizing agent and method for producing same15 Sep 2026US 12,735,813 B2Toray Industries, Inc.
- Pitch-based ultrafine carbon fibers and pitch-based ultrafine carbon fiber dispersion15 Sep 2026US 12,735,814 B2Teijin Limited
- Laser writing in ambient conditions for carbonization of synthetic polymers, including nanostructured polymers treated in alkaline media15 Sep 2026US 12,735,815 B2Fondazione Istituto Italiano Di Technologia 5%
- Alginate-based polymers and products, and their manufacture8 Sep 2026US 12,729,251 B2Keel Labs, Inc.
- Treatment agent for acrylic fibers and use of the same8 Oct 2026US 2026/0308815 A1Matsumoto Yushi-Seiyaku Co., Ltd.
- Method for preparing boron nitride nanosheets, method for preparing boron nitride nanosheet-based fibers, and fibers prepared thereby24 Sep 2026US 2026/0285683 A1Iucf-Hyu (Industry-University Cooperation Foundation Hanyang University)
- Bioplastics And Method Of Formation24 Sep 2026US 2026/0286105 A1Viable Gear, Inc.
- 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
- Method of making polyacrylonitrile based carbon fibers and polyacrylonitrile based carbon fiber fabric24 Sep 2026US 2026/0286576 A1University of Kentucky Research Foundation
Most cited
By later US patents
- Carbide nanomaterials684US 6,190,634 B1President and Fellows of Harvard College · 2001
- Production of metal ion containing carbon fibers useful in electron shielding applications454US 3,997,638 ACelanese Corporation · 1976
- Carbon fibrils, method for producing same and compositions containing same361US 4,663,230 AHyperion Catalysis International, Inc. · 1987
- Preparation of carbide nanorods351US 5,997,832 APresident and Fellows of Harvard College · 1999
- Nanotube films and articles330US 6,706,402 B2Nantero, Inc. · 2004