C08B 1/003
Preparation of cellulose solutions, i.e. dopes, with different possible solvents
Official title: {Preparation of cellulose solutions, i.e. dopes, with different possible solvents, e.g. ionic liquids (solutions used in the manufacture of monocomponent artificial filaments or cellulose or derivatives thereof D01F2/02)}
C08B1/003 (Preparation of cellulose solutions, i.e. dopes, with different possible solvents) appears on 237 US grants and 308 published applications in this corpus.
Search patents in C08B- Granted patents
- 237
- Published applications
- 308
- Assignees
- 212
- Inventors
- 804
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 5 | 0 |
| 1980 | 2 | 0 |
| 1981 | 6 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 5 | 0 |
| 1998 | 5 | 0 |
| 1999 | 7 | 0 |
| 2000 | 8 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 2 | 3 |
| 2004 | 5 | 1 |
| 2005 | 4 | 6 |
| 2006 | 4 | 3 |
| 2007 | 2 | 2 |
| 2008 | 0 | 11 |
| 2009 | 0 | 16 |
| 2010 | 4 | 12 |
| 2011 | 5 | 14 |
| 2012 | 13 | 17 |
| 2013 | 10 | 30 |
| 2014 | 18 | 31 |
| 2015 | 17 | 18 |
| 2016 | 16 | 13 |
| 2017 | 7 | 10 |
| 2018 | 7 | 13 |
| 2019 | 9 | 18 |
| 2020 | 9 | 8 |
| 2021 | 12 | 13 |
| 2022 | 8 | 14 |
| 2023 | 4 | 10 |
| 2024 | 8 | 13 |
| 2025 | 6 | 16 |
| 2026 | 7 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Two methods for preparing universal microbial medium by eutectic system-based cellulose liquefaction25 Aug 2026US 12,716,050 B2Xinjiang University
- 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
- Lyocell fibers and methods of producing the same17 Mar 2026US 12,577,706 B2Aalto University Foundation sr
- Quantitative Raman spectroscopy10 Mar 2026US 12,571,737 B2Aalto University Foundation sr
- Methods of making cellulose ester microbeads with water recovery and recycle17 Sep 2026US 2026/0275058 A1Eastman Chemical Company
- Polymer modified nanofiber composites10 Sep 2026US 2026/0265416 A1University of Maine System Board of Trustees
- Process for partial delignification and filling of a lignocellulosic material, and composite material structure able to be obtained by this process27 Aug 2026US 2026/0249512 A1SAS Woodoo
- Preparation Method for Cellulose-based Texture Modifier and Stabilizing Agent Extracted with Deep Eutectic Solvent30 Jul 2026US 2026/0217868 A1Jiangnan University
- Biomass treatment16 Jul 2026US 2026/0201072 A1Bio-Sep, Inc.
Most cited
By later US patents
- Dissolution and processing of cellulose using ionic liquids152US 6,824,599 B2University of Alabama · 2004
- Cellulose matrix encapsulation and method122US 6,808,557 B2PG Research Foundation · 2004
- Solubility of cellulose in ionic liquids with addition of amino bases98US 7,754,002 B2BASF SE · 2010
- Process for making a shapeable cellulose and shaped cellulose products92US 4,196,282 AAkzona Incorporated · 1980
- Process for making precipitated cellulose91US 4,145,532 AAkzona Incorporated · 1979