C08B 17/00
Apparatus for esterification or etherification of cellulose
C08B17/00 (Apparatus for esterification or etherification of cellulose) appears on 30 US grants and 18 published applications in this corpus.
Search patents in C08B- Granted patents
- 30
- Published applications
- 18
- Assignees
- 24
- Inventors
- 91
- Latest grant
- 16 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 4 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 2 |
| 2002 | 0 | 0 |
| 2003 | 1 | 2 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 2 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 1 | 1 |
| 2018 | 0 | 2 |
| 2019 | 2 | 1 |
| 2020 | 1 | 1 |
| 2021 | 4 | 0 |
| 2022 | 0 | 2 |
| 2023 | 1 | 1 |
| 2024 | 1 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
- C08B 17/06Apparatus for esterification or etherification of cellulose: for making cellulose ethers13
- C08B 17/02Apparatus for esterification or etherification of cellulose: for making organic esters of10
- C08B 17/04Apparatus for esterification or etherification of cellulose: for making cellulose nitrate2
Recent patents
- Recycle content cellulose ester16 Dec 2025US 12,497,467 B2Exxon Mobil Product Solutions Company
- Polymers, articles, and chemicals made from densified textile derived syngas26 Mar 2024US 11,939,406 B2Eastman Chemical Company
- High-viscosity lithium carboxymethyl cellulose and preparation method therefor and application thereof21 Mar 2023US 11,608,387 B2Chongqing Lihong Fine Chemicals Co., Ltd
- Methods for biobased derivatization of cellulosic surfaces24 Aug 2021US 11,098,134 B2HS Manufacturing Group, LLC
- Method and apparatus for controlling the catalytic oxidation of cellulose29 Jun 2021US 11,046,788 B2Upm-Kymmene Corporation
- Polymers, articles, and chemicals made from densified textile derived syngas18 Jul 2024US 2024/0239920 A1Eastman Chemical Company
- High-viscosity lithium carboxymethyl cellulose and preparation method therefor and application thereof5 Jan 2023US 2023/0002511 A1Chongqing Lihong Fine Chemicals Co., Ltd
- Recycle content cellulose ester21 Jul 2022US 2022/0227892 A1Eastman Chemical Company
- Polymers, articles, and chemicals made from densified textile derived syngas21 Apr 2022US 2022/0119987 A1Eastman Chemical Company
- Methods for biobased derivatization of cellulosic surfaces7 May 2020US 2020/0140575 A1HS Manufacturing Group, LLC
Most cited
By later US patents
- Process and equipment for preparing swellable cross-linked carboxyalkylcelluloses from natural cellulose or cellulose hydrate and use thereof32US 4,250,306 AHoechst Aktiengesellschaft · 1981
- Apparatus for continuously producing water-soluble hydroxyalkyl cellulose and related ethers21US 4,363,784 AHoechst Aktiengesellschaft · 1982
- Continuous process for producing water-soluble hydroxyalkyl cellulose and related ethers18US 4,310,663 AHoechst Aktiengesellschaft · 1982
- Continuous process for the nitration of cellulose and apparatus therefor15US 4,206,302 ASociete Nationole des Poudres et Explosifs · 1980
- Process for preparing swellable cross-linked carboxyalkylcelluloses, in the form of fibers, from cellulose hydrate and use thereof12US 4,248,595 AHoechst Aktiengesellschaft · 1981