B01D 71/69
Polysulfonamides
Official title: {Polysulfonamides}
B01D71/69 (Polysulfonamides) appears on 8 US grants and 9 published applications in this corpus.
Search patents in B01D- Granted patents
- 8
- Published applications
- 9
- Assignees
- 5
- Inventors
- 34
- Latest grant
- 23 Jan 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 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 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 3 |
| 2004 | 2 | 1 |
| 2005 | 1 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Low-pressure high-flux hollow fiber nanofiltration (NF) membrane, and preparation method and use thereof23 Jan 2024US 11,878,271 B1Harris Membrane Clean Technology Inc.
- Polyamide matrices and methods for their preparation and use10 Jan 2012US 8,092,918 B2GE Osmonics, Inc.
- Acid stable membranes for nanofiltration21 Nov 2006US 7,138,058 B2GE Osmonics, Inc.
- Polysulfonamide matrices4 Jan 2005US 6,837,996 B2GE Osmonics, Inc.
- Process for preparing a sulfonamide polymer matrix31 Aug 2004US 6,783,711 B2GE Osmonics, Inc.
- Polymer Films11 Apr 2024US 2024/0117133 A1
- Optimized hemodialyzer for blood purification14 May 2020US 2020/0147287 A1
- Modified sulfonamide polymeric matrices21 Jun 2012US 2012/0152839 A1
- Production Of Monomer, Oligomer And Polymer Phosphonic Acid Esters And Phosphonic And Sulphonic Acids By A Nucleophile Aromatic Substitution3 Sep 2009US 2009/0221787 A1
- Polyamide matrices and methods for their preparation and use13 Nov 2008US 2008/0277342 A1GE Osmonics, Inc.
Most cited
By later US patents
- Acid stable membranes for nanofiltration28US 7,138,058 B2GE Osmonics, Inc. · 2006
- Polysulfonamide matrices22US 6,837,996 B2GE Osmonics, Inc. · 2005
- Acid-base polymer blends and their use in membrane processes16US 6,759,441 B1Universitat Stuttgart Lehrstuhl und Institut fur Chemische Verfahrenstechnik · 2004
- Semipermeable membranes of aromatic disulfimide containing polyamides13US 4,269,967 ABayer Aktiengesellschaft · 1981
- Process for preparing a sulfonamide polymer matrix12US 6,783,711 B2GE Osmonics, Inc. · 2004