B01D 71/383
Polyvinylacetates
Official title: {Polyvinylacetates}
B01D71/383 (Polyvinylacetates) appears on 56 US grants and 51 published applications in this corpus.
Search patents in B01D- Granted patents
- 56
- Published applications
- 51
- Assignees
- 51
- Inventors
- 161
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 5 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 0 |
| 2003 | 0 | 2 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 5 |
| 2009 | 1 | 1 |
| 2010 | 3 | 1 |
| 2011 | 1 | 2 |
| 2012 | 0 | 3 |
| 2013 | 2 | 2 |
| 2014 | 1 | 5 |
| 2015 | 1 | 4 |
| 2016 | 3 | 3 |
| 2017 | 4 | 6 |
| 2018 | 1 | 3 |
| 2019 | 4 | 3 |
| 2020 | 0 | 1 |
| 2021 | 2 | 0 |
| 2022 | 0 | 2 |
| 2023 | 0 | 2 |
| 2024 | 0 | 2 |
| 2025 | 3 | 2 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Solvent-free production of porous polymer structures23 Jun 2026US 12,661,619 B2Novamem AG
- Crosslinked facilitated transport membrane for hydrogen purification from coal-derived syngas31 Mar 2026US 12,589,363 B2Ohio State Innovation Foundation
- Selective extraction of thiophene from thiophene/n-heptane using a poly(vinyl acetate)/water membrane system23 Sep 2025US 12,420,242 B1King Saud University
- Anti-fouling and semi-permeable membrane27 May 2025US 12,311,321 B2Aquaporin A/S
- Blood treatment device comprising alkaline phosphatase7 Jan 2025US 12,186,472 B2Gambro Lundia AB
- Porous membrane and purification method8 Oct 2026US 2026/0307015 A1Toyobo Co., Ltd.
- Expression microdissection systems18 Dec 2025US 2025/0383269 A1The Johns Hopkins University
- Blood treatment device comprising alkaline phosphatase13 Mar 2025US 2025/0082835 A1Gambro Lundia AB
- Separator and method for manufacturing same12 Sep 2024US 2024/0304950 A1W-Scope Chungju Plant Co., Ltd.
- Separator and method for manufacturing the same25 Jul 2024US 2024/0250382 A1W-Scope Chungju Plant Co., Ltd.
Most cited
By later US patents
- Method for producing microporous elements, the microporous elements thus produced and uses thereof72US 6,451,260 B1Dyax Corp. · 2002
- Hydrophilic polymer alloy, fiber and porous membrane comprising this polymer alloy, and methods for preparing them68US 5,677,360 AMitsubishi Rayon Co., Ltd. · 1997
- Multi-layer membrane and the use thereof for the separation of liquid mixtures according to the pervaporation process50US 4,755,299 AGFT Ingenieurburo Fur Industrieanlagenbau · 1988
- Method of synthesizing cyclodextrin polymers48US 5,276,088 AToppan Printing Co., Ltd. · 1994
- Modified polyvinylalcohol containing semipermeable composite membranes, process for their manufacture and their use44US 4,911,844 AAligena AG · 1990