C08B 3/02
Catalysts used for the esterification
C08B3/02 (Catalysts used for the esterification) appears on 15 US grants and 8 published applications in this corpus.
Search patents in C08B- Granted patents
- 15
- Published applications
- 8
- Assignees
- 17
- Inventors
- 35
- Latest grant
- 1 Jun 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 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 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 2 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 2 |
| 2020 | 2 | 0 |
| 2021 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- NCC films and products based thereon1 Jun 2021US 11,021,546 B2Melodea Ltd.
- Fine cellulose fiber and production method for same25 May 2021US 11,015,291 B2Asahi Kasei Kabushiki Kaisha
- Polysaccharide derivatives and cross-metathesis processes for preparing them1 Dec 2020US 10,851,179 B2Virginia Tech Intellectual Properties, Inc.
- Functionalized cellulose nanocrystal materials and methods of preparation2 Jun 2020US 10,669,404 B2Purdue Research Foundation
- Esterified polysaccharide products and β-lactone ring opened ketene dimer products containing the compositions, and process of making the same23 Sep 2003US 6,624,298 B2Hercules Incorporated
- Functionalized cellulose nanocrystal materials and methods of preparation28 Mar 2019US 2019/0092926 A1Purdue Research Foundation
- Fine cellulose fiber and production method for same28 Mar 2019US 2019/0093285 A1KRI, Inc.
- Ncc films and products based thereon13 Sep 2018US 2018/0258188 A1Melodea Ltd.
- Polysaccharide derivatives and cross-metathesis processes for preparing them29 Dec 2016US 2016/0376379 A1Virginia Tech Intellectual Properties, Inc.
- Method for producing polysaccharide derivatives12 Apr 2012US 2012/0088909 A1Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
Most cited
By later US patents
- Catalytic system for cellulose acylation process for producing said catalytic system, and for its practical application13US 6,407,224 B1Nauchno-prozvodstvennaya firma “Efiry Tselljulosy” · 2002
- Preparation of microcrystalline triacetylcellulose10US 4,697,007 AMerck Patent GmbH · 1987
- Catalyst for and method of preparing cellulose esters3US 4,314,056 AEastman Kodak Company · 1982
- Method of preparing cellulose esters2US 4,329,446 AEastman Kodak Company · 1982
- Catalyst for and method of preparing cellulose esters2US 4,329,447 AEastman Kodak Company · 1982