B01D 71/481
Polyarylates
Official title: {Polyarylates}
B01D71/481 (Polyarylates) appears on 34 US grants and 27 published applications in this corpus.
Search patents in B01D- Granted patents
- 34
- Published applications
- 27
- Assignees
- 26
- Inventors
- 100
- Latest grant
- 11 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 5 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 2 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 1 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 1 |
| 2016 | 0 | 4 |
| 2017 | 0 | 0 |
| 2018 | 1 | 1 |
| 2019 | 2 | 0 |
| 2020 | 1 | 0 |
| 2021 | 1 | 2 |
| 2022 | 0 | 2 |
| 2023 | 1 | 1 |
| 2024 | 0 | 2 |
| 2025 | 7 | 6 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for cleaning a fouled water purification membrane11 Nov 2025US 12,465,894 B2King Fahd University of Petroleum and Minerals
- Porous water decontamination membrane11 Nov 2025US 12,465,895 B2King Fahd University of Petroleum and Minerals
- Filtration membrane4 Nov 2025US 12,458,932 B2King Fahd University of Petroleum and Minerals
- Method for photocatalytic degradation of organic pollutants14 Oct 2025US 12,440,810 B1King Fahd University of Petroleum and Minerals
- Porous self-cleaning photocatalytic membrane7 Oct 2025US 12,434,205 B1King Fahd University of Petroleum and Minerals
- Porous self-cleaning photocatalytic membrane9 Oct 2025US 2025/0312751 A1King Fahd University of Petroleum and Minerals
- Method for photocatalytic degradation of organic pollutants9 Oct 2025US 2025/0312752 A1King Fahd University of Petroleum and Minerals
- Method for cleaning a fouled water purification membrane9 Oct 2025US 2025/0312753 A1King Fahd University of Petroleum and Minerals
- Porous water decontamination membrane9 Oct 2025US 2025/0312754 A1King Fahd University of Petroleum and Minerals
- Membranes with reduced particle formation26 Jun 2025US 2025/0205650 A1Entegris, Inc.
Most cited
By later US patents
- Gas separations utilizing glassy polymer membranes at sub-ambient temperatures80US 5,837,032 AThe Cynara Company · 1998
- Gas separations utilizing glassy polymer membranes at sub-ambient temperatures42US 5,352,272 AThe Dow Chemical Company · 1994
- Membranes having improved selectivity and recovery, and process for making same32US 5,409,524 AThe Dow Chemical Company · 1995
- Device and method for manufacturing a particulate filter with regularly spaced micropores25US 7,960,708 B2University of Houston · 2011
- Gas separations utilizing glassy polymer membranes at sub-ambient temperatures23US 5,679,133 AThe Dow Chemical Company · 1997