D01F 11/02
Chemical after-treatment of artificial filaments or the like during manufacture: of cellulose
Official title: of cellulose, cellulose derivatives, or proteins
D01F11/02 (Chemical after-treatment of artificial filaments or the like during manufacture: of cellulose) appears on 72 US grants and 97 published applications in this corpus.
Search patents in D01F- Granted patents
- 72
- Published applications
- 97
- Assignees
- 77
- Inventors
- 274
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 3 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 2 |
| 2011 | 0 | 4 |
| 2012 | 2 | 2 |
| 2013 | 1 | 1 |
| 2014 | 0 | 1 |
| 2015 | 1 | 0 |
| 2016 | 2 | 6 |
| 2017 | 0 | 8 |
| 2018 | 6 | 7 |
| 2019 | 6 | 7 |
| 2020 | 2 | 5 |
| 2021 | 7 | 13 |
| 2022 | 3 | 4 |
| 2023 | 2 | 9 |
| 2024 | 5 | 7 |
| 2025 | 8 | 9 |
| 2026 | 6 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Hydrophobic cellulosic fiber16 Jun 2026US 12,655,543 B2Grasim Industries Limited
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- Cellulose acetate fibers in nonwoven fabrics20 Aug 2026US 2026/0242984 A1Eastman Chemical Company
- Compound phosphorus-nitrogen flame retardant, flame-retardant regenerated cellulose fiber, and preparation method23 Jul 2026US 2026/0209996 A1China Textile Academy
- Cosmetic compositions comprising dragline spider silk30 Apr 2026US 2026/0115118 A1Seevix Material Sciences Ltd.
- Cellulose fibers, and products using said cellulose fibers23 Apr 2026US 2026/0110115 A1Asahi Kasei Kabushiki Kaisha
- Viscose-based biofiber containing active antioxidant component and preparation method thereof16 Apr 2026US 2026/0103826 A1Byherb Fiber Inc.
Most cited
By later US patents
- Lyocell fiber treatment method59US 5,562,739 ACourtaulds Fibres (Holdings) Limited · 1996
- Cellulosic fibers from anisotropic solutions35US 4,501,886 AE. I. Du Pont de Nemours and Company · 1985
- Process for surface treating cellulose products34US 4,261,943 AAkzona Incorporated · 1981
- Process for reducing the fibrillation tendency of solvent-spun cellulose fibre28US 5,310,424 ACourtaulds Limited · 1994
- Cellulosic fibres28US 5,731,083 ACourtaulds Limited · 1998