B01D 71/642
Polyester-imides
Official title: {Polyester-imides}
B01D71/642 (Polyester-imides) appears on 9 US grants and 10 published applications in this corpus.
Search patents in B01D- Granted patents
- 9
- Published applications
- 10
- Assignees
- 13
- Inventors
- 50
- Latest grant
- 17 Sep 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 1 | 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 | 0 | 1 |
| 2003 | 1 | 1 |
| 2004 | 1 | 2 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 1 | 0 |
| 2011 | 1 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Composite hollow fiber membrane and manufacturing method thereof17 Sep 2019US 10,413,869 B2Kolon Industries, Inc.
- Method of manufacturing hydrophilic membrane having improved antifouling property and hydrophilic membrane manufactured by the method10 Sep 2013US 8,528,746 B2Korea Institute of Science and Technology
- Method of making a high molecular weight, monoesterified polyimide polymer19 Jul 2011US 7,981,974 B2Chevron U.S.A.Inc.
- Membrane separation process using mixed vapor-liquid feed28 Sep 2010US 7,803,275 B2ExxonMobil Research and Engineering Company
- Functionalized polyimide molded body and functionalized polyimide membrane25 Sep 2007US 7,273,551 B2GKSS-Forschungszentrum Geesthacht GmbH
- Polyimide copolymers and membranes, preparation methods and uses thereof as well as systems and methods for purifying helium gas3 Oct 2024US 2024/0327574 A1Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation
- Composite hollow fiber membrane and manufacturing method thereof10 Nov 2016US 2016/0325236 A1Kolon Industries, Inc.
- Method of manufacturing hydrophilic membrane having improved antifouling property and hydrophilic membrane manufactured by the method20 Oct 2011US 2011/0253621 A1Korea Institute of Science and Technology
- Method of making a crosslinked fiber membrane from a high molecular weight, monoesterified polyimide polymer16 Jul 2009US 2009/0182097 A1Chevron U.S.A.Inc.
- Membrane separation process using mixed vapor-liquid feed17 Jan 2008US 2008/0011680 A1ExxonMobil Research and Engineering Company
Most cited
By later US patents
- Polyimide aliphatic polyester copolymers (C-2356)33US 4,990,275 AExxon Research & Engineering Co. · 1991
- Membrane separation process using mixed vapor-liquid feed18US 7,803,275 B2ExxonMobil Research and Engineering Company · 2010
- Methods for the preparation of polyesters, poly(ester amide)s and poly(ester imide)s and uses of the materials obtained therefrom12US 6,740,728 B2Praxair Technology, Inc. · 2004
- Multi-block polymer comprising a first amide acid prepolymer, chain extended with a compatible second prepolymer, the membrane made therefrom and its use in separations9US 5,130,017 AExxon Research & Engineering Co. · 1992
- Method of making a high molecular weight, monoesterified polyimide polymer6US 7,981,974 B2Chevron U.S.A.Inc. · 2011