D01F 2/02
From solutions of cellulose in acids, bases or salts
Official title: from solutions of cellulose in acids, bases or salts
D01F2/02 (From solutions of cellulose in acids, bases or salts) appears on 123 US grants and 159 published applications in this corpus.
Search patents in D01F- Granted patents
- 123
- Published applications
- 159
- Assignees
- 115
- Inventors
- 428
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 7 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 2 |
| 2003 | 0 | 2 |
| 2004 | 2 | 1 |
| 2005 | 0 | 2 |
| 2006 | 2 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 5 |
| 2009 | 0 | 4 |
| 2010 | 1 | 2 |
| 2011 | 1 | 5 |
| 2012 | 1 | 5 |
| 2013 | 2 | 10 |
| 2014 | 2 | 6 |
| 2015 | 10 | 4 |
| 2016 | 2 | 9 |
| 2017 | 3 | 6 |
| 2018 | 5 | 8 |
| 2019 | 9 | 10 |
| 2020 | 4 | 11 |
| 2021 | 11 | 10 |
| 2022 | 8 | 7 |
| 2023 | 8 | 20 |
| 2024 | 6 | 9 |
| 2025 | 10 | 8 |
| 2026 | 5 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Super-tough cellulose aerogel fiber as well as preparation method and use thereof14 Jul 2026US 12,680,198 B2Suzhou Institute of Nano-Tech and Nano-Bionics (Sinano) , Chinese Academy of Sciences
- Method for providing a filtered spinning dope12 May 2026US 12,624,477 B2Treetotextile AB
- Virus removal membrane and method for manufacturing virus removal membrane5 May 2026US 12,616,940 B2Asahi Kasei Life Science Corporation
- Method for producing regenerated cellulose-based threads and felted cloths28 Apr 2026US 12,611,841 B2Refiberd, Inc.
- Processing for spinning alkaline cellulose spin dope10 Mar 2026US 12,571,131 B2Treetotextile AB
- A method of treating regenerated cellulose fiber for textile and non-woven applications20 Aug 2026US 2026/0243016 A1Asia Pacific Rayon Limited
- Compound phosphorus-nitrogen flame retardant, flame-retardant regenerated cellulose fiber, and preparation method23 Jul 2026US 2026/0209996 A1China Textile Academy
- Algal cellulose fiber16 Jul 2026US 2026/0201610 A1University of Technology, Sydney
- A fabric with regenerated cellulose25 Jun 2026US 2026/0176794 A1Treetotextile AB
- Method for improving surface structure of regenerated cellulose fiber11 Jun 2026US 2026/0160022 A1Qilu University of Technology (Sdas)
Most cited
By later US patents
- Dissolution and processing of cellulose using ionic liquids152US 6,824,599 B2University of Alabama · 2004
- Process for activating polysaccharides, polysaccharides produced by this process, and use thereof54US 5,939,544 ARhodia Acetow GmbH · 1999
- Cellulose fibre27US 5,795,522 ALenzing Atkiengesellschaft · 1998
- Process for forming shaped cellulosic product26US 4,352,770 AInternational Telephone and Telegraph Corporation · 1982
- Porous regenerated cellulose hollow fiber and process for preparation thereof21US 4,604,326 AAsahi Kasei Kogyo Kabushiki Kaisha · 1986