C08B 11/00
Preparation of cellulose ethers
Official title: Preparation of cellulose ethers {(rendering cellulose suitable for etherification C08B1/06)}
C08B11/00 (Preparation of cellulose ethers) appears on 778 US grants and 745 published applications in this corpus.
Search patents in C08B- Granted patents
- 778
- Published applications
- 745
- Assignees
- 366
- Inventors
- 1,836
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 16 | 0 |
| 1978 | 13 | 0 |
| 1979 | 6 | 0 |
| 1980 | 7 | 0 |
| 1981 | 17 | 0 |
| 1982 | 11 | 0 |
| 1983 | 15 | 0 |
| 1984 | 14 | 0 |
| 1985 | 17 | 0 |
| 1986 | 12 | 0 |
| 1987 | 15 | 0 |
| 1988 | 4 | 0 |
| 1989 | 7 | 0 |
| 1990 | 17 | 0 |
| 1991 | 17 | 0 |
| 1992 | 8 | 0 |
| 1993 | 9 | 0 |
| 1994 | 10 | 0 |
| 1995 | 12 | 0 |
| 1996 | 19 | 0 |
| 1997 | 5 | 0 |
| 1998 | 11 | 0 |
| 1999 | 8 | 0 |
| 2000 | 16 | 0 |
| 2001 | 12 | 13 |
| 2002 | 15 | 18 |
| 2003 | 30 | 32 |
| 2004 | 5 | 21 |
| 2005 | 18 | 23 |
| 2006 | 13 | 28 |
| 2007 | 7 | 29 |
| 2008 | 8 | 20 |
| 2009 | 4 | 19 |
| 2010 | 5 | 23 |
| 2011 | 12 | 22 |
| 2012 | 14 | 31 |
| 2013 | 21 | 43 |
| 2014 | 16 | 34 |
| 2015 | 33 | 43 |
| 2016 | 45 | 32 |
| 2017 | 27 | 31 |
| 2018 | 21 | 44 |
| 2019 | 27 | 41 |
| 2020 | 30 | 37 |
| 2021 | 25 | 36 |
| 2022 | 30 | 39 |
| 2023 | 26 | 25 |
| 2024 | 15 | 17 |
| 2025 | 13 | 28 |
| 2026 | 10 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C08B 11/02Alkyl or cycloalkyl ethers422
- C08B 11/20Post-etherification treatments of chemical or physical type303
- C08B 11/193Mixed ethers, i.e. ethers with two or more different etherifying groups201
- C08B 11/16Aryl or aralkyl ethers14
- C08B 11/187Preparation of cellulose ethers: with olefinic unsaturated groups9
Recent patents
- Binder for positive electrode of lithium ion battery, slurry for forming positive electrode mixture layer of lithium ion battery, positive electrode for lithium ion battery, and lithium ion battery15 Sep 2026US 12,738,500 B2Tokyo University of Science Foundation
- Marine-biodegradation accelerator11 Aug 2026US 12,703,793 B2Nisshinbo Holdings Inc.
- Hydrophobically modified chitosan compositions2 Jun 2026US 12,643,993 B2Medcura, Inc.
- Composition for aerozol food product, hydroxypropyl methylcellulose, and method of producing hydroxypropyl methylcellulose21 Apr 2026US 12,604,923 B2Shin-Etsu Chemical Co., Ltd.
- Method for producing modified cellulose fiber, and modified cellulose fiber21 Apr 2026US 12,606,952 B2Kao Corporation
- Low viscosity cm-mfc17 Sep 2026US 2026/0274998 A1Suzano S.A.
- Method to reduce alkoxy ether release from cellulose ethers27 Aug 2026US 2026/0250427 A1
- Modified carboxymethyl cellulose, their compositions and the uses thereof27 Aug 2026US 2026/0250428 A1ISP Investments Inc.
- A production process for totally biodegradable biopolymer from jute23 Jul 2026US 2026/0209480 A1
- Composition and process for coating cellulosic materials16 Jul 2026US 2026/0201195 A1Centro Nacional De Pesquisa Em Energia E Materiais
Most cited
By later US patents
- Polymeric carrier bound ligands282US 4,195,128 ABayer Aktiengesellschaft · 1980
- Modified polysaccharides having improved absorbent properties and process for the preparation thereof160US 5,550,189 AKimberly-Clark Corporation · 1996
- Modified nonionic cellulose ethers158US 4,228,277 AHercules Incorporated · 1980
- Superabsorbent surface-treated carboxyalkylated polysaccharides and process for producing same158US 8,461,129 B2Archer Daniels Midland Company · 2013
- Crosslinked carboxy polysaccharides154US 5,676,964 AFidia S.p.A. · 1997