C08B 7/00
Preparation of cellulose esters of both organic and inorganic acids
Official title: Preparation of cellulose esters of both organic and inorganic acids {(rendering cellulose suitable for esterification C08B1/02)}
C08B7/00 (Preparation of cellulose esters of both organic and inorganic acids) appears on 17 US grants and 20 published applications in this corpus.
Search patents in C08B- Granted patents
- 17
- Published applications
- 20
- Assignees
- 18
- Inventors
- 55
- Latest grant
- 10 Sep 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 0 |
| 2003 | 1 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 2 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 3 |
| 2010 | 1 | 1 |
| 2011 | 1 | 1 |
| 2012 | 1 | 0 |
| 2013 | 1 | 2 |
| 2014 | 0 | 2 |
| 2015 | 3 | 2 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 1 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 2 | 0 |
| 2023 | 0 | 1 |
| 2024 | 1 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Sulfate ester modified cellulose nanofibers and method for producing cellulose nanofibers10 Sep 2024US 12,084,525 B2Yokogawa Electric Corporation
- Sulfate ester modified cellulose nanofibers and method for producing cellulose nanofibers27 Dec 2022US 11,535,682 B2Yokogawa Electric Corporation
- Fine cellulose fiber and method for producing same13 Sep 2022US 11,441,243 B2Daio Paper Corporation
- Substituted cellulose acetates and uses thereof27 Oct 2015US 9,167,830 B2Celanese Acetate LLC
- Engineered wood produced with substituted cellulose ester adhesives and methods relating thereto28 Jul 2015US 9,090,045 B2Celanese Acetate LLC
- Solvent-based oxygen barrier coating composition17 Apr 2025US 2025/0122385 A1Siegwerk Druckfarben AG & Co. KGaA
- Sulfate ester modified cellulose nanofibers and method for producing cellulose nanofibers23 Feb 2023US 2023/0054106 A1Yokogawa Electric Corporation
- Fine cellulose fiber and method for producing same27 Feb 2020US 2020/0063292 A1Daio Paper Corporation
- Sulfate ester modified cellulose nanofibers and method for producing cellulose nanofibers5 Dec 2019US 2019/0367638 A1KRI, Inc.
- Degradable downhole tools comprising cellulosic derivatives10 May 2018US 2018/0128070 A1Halliburton Energy Services.Inc.
Most cited
By later US patents
- Process for preparation of alkali cellulose ester sulfates47US 4,005,251 AJohnson & Johnson · 1977
- Method for producing cellulose sulfoacetate derivatives and products and mixtures thereof6US 6,800,754 B1Institut National de la Recherche Agronomique (INRA) · 2004
- Substituted cellulose acetates and uses thereof4US 9,167,830 B2Celanese Acetate LLC · 2015
- Substituted cellulose acetates and uses thereof3US 9,023,757 B2Celanese Acetate LLC · 2015
- Concrete additive2US 3,951,674 AThe Procter & Gamble Company · 1976