B01D 2313/23
Specific membrane protectors
Official title: Specific membrane protectors, e.g. sleeves or screens
B01D2313/23 (Specific membrane protectors) appears on 144 US grants and 184 published applications in this corpus.
Search patents in B01D- Granted patents
- 144
- Published applications
- 184
- Assignees
- 122
- Inventors
- 390
- Latest grant
- 5 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 1 |
| 2002 | 1 | 4 |
| 2003 | 4 | 5 |
| 2004 | 1 | 3 |
| 2005 | 2 | 3 |
| 2006 | 1 | 4 |
| 2007 | 0 | 3 |
| 2008 | 1 | 4 |
| 2009 | 5 | 3 |
| 2010 | 2 | 4 |
| 2011 | 3 | 2 |
| 2012 | 3 | 3 |
| 2013 | 4 | 7 |
| 2014 | 2 | 11 |
| 2015 | 6 | 12 |
| 2016 | 8 | 8 |
| 2017 | 8 | 13 |
| 2018 | 8 | 9 |
| 2019 | 7 | 11 |
| 2020 | 13 | 11 |
| 2021 | 3 | 12 |
| 2022 | 12 | 9 |
| 2023 | 5 | 12 |
| 2024 | 3 | 18 |
| 2025 | 13 | 8 |
| 2026 | 5 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Filtration units and assembly, and methods of making and using same5 May 2026US 12,616,937 B2Repligen Corporation
- Hollow fiber membrane module28 Apr 2026US 12,611,631 B2Nok Corporation
- Humidifier system for fuel cell31 Mar 2026US 12,592,403 B2Kolon Industries, Inc.
- System and method for reducing the dissolved solids of a non-potable aqueous flow17 Feb 2026US 12,551,849 B2
- Tubular membrane heat exchanger6 Jan 2026US 12,516,886 B2Baltimore Aircoil Company, Inc.
- Hollow fiber membrane module housing21 May 2026US 2026/0138097 A1Wine to Water
- Hollow fiber membrane module16 Apr 2026US 2026/0102741 A1Nok Corporation
- Hollow fiber membrane module2 Apr 2026US 2026/0091358 A1Nok Corporation
- Hollow fiber membrane module26 Mar 2026US 2026/0084113 A1Nok Corporation
- Fuel cell membrane humidifier16 Oct 2025US 2025/0323289 A1Kolon Industries, Inc.
Most cited
By later US patents
- Method and apparatus for continuous peritoneal cascade dialysis and hemofiltration (CPCD/H)143US 5,980,481 ATransvivo, Inc. · 1999
- Method and apparatus for continuous peritoneal cascade dialysis and hemofiltration (CPCD/H)104US 6,234,991 B1Transvivo, Inc. · 2001
- Hollow fiber filter device96US 4,775,471 AEbara Corporation · 1988
- Filtration cartridge and reactor68US 4,610,789 APPG Industries, Inc. · 1986
- Hemodiafiltration system and method66US 6,776,912 B2Membrana GmbH · 2004