B01D 2321/04
Backflushing
B01D2321/04 (Backflushing) appears on 575 US grants and 709 published applications in this corpus.
Search patents in B01D- Granted patents
- 575
- Published applications
- 709
- Assignees
- 415
- Inventors
- 1,468
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 6 | 0 |
| 1989 | 7 | 0 |
| 1990 | 4 | 0 |
| 1991 | 9 | 0 |
| 1992 | 8 | 0 |
| 1993 | 15 | 0 |
| 1994 | 6 | 0 |
| 1995 | 5 | 0 |
| 1996 | 6 | 0 |
| 1997 | 22 | 0 |
| 1998 | 15 | 0 |
| 1999 | 17 | 0 |
| 2000 | 15 | 0 |
| 2001 | 15 | 4 |
| 2002 | 16 | 25 |
| 2003 | 16 | 24 |
| 2004 | 14 | 44 |
| 2005 | 20 | 26 |
| 2006 | 17 | 32 |
| 2007 | 10 | 38 |
| 2008 | 8 | 31 |
| 2009 | 13 | 31 |
| 2010 | 11 | 22 |
| 2011 | 13 | 25 |
| 2012 | 11 | 17 |
| 2013 | 15 | 28 |
| 2014 | 19 | 31 |
| 2015 | 15 | 31 |
| 2016 | 12 | 28 |
| 2017 | 19 | 45 |
| 2018 | 19 | 31 |
| 2019 | 26 | 23 |
| 2020 | 23 | 30 |
| 2021 | 21 | 30 |
| 2022 | 17 | 24 |
| 2023 | 20 | 32 |
| 2024 | 22 | 24 |
| 2025 | 18 | 20 |
| 2026 | 17 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for operating separation membrane module, computer-readable recording medium having program recorded thereon, and water production system18 Aug 2026US 12,708,878 B2Toray Industries, Inc.
- Method for purifying liquid and system for the implementation thereof11 Aug 2026US 12,702,952 B2Electrophor, Inc.
- Water purifier16 Jun 2026US 12,654,137 B2Coway Co., Ltd.
- Water treatment unit comprising a plurality of filtration devices26 May 2026US 12,637,368 B2Inovaya
- System and method for desalination of water19 May 2026US 12,629,635 B2FSubsea AS
- Modular multi-filter systems and methods of use1 Oct 2026US 2026/0295538 A1Pentair Water Pool and Spa, Inc.
- Bioreactor with membrane filtration and methods for treating wastewater10 Sep 2026US 2026/0265098 A1Bl Technologies, Inc.
- System and Method for Desalination of Water3 Sep 2026US 2026/0257175 A1FSubsea AS
- Container and water treatment system20 Aug 2026US 2026/0241342 A1Yokogawa Electric Corporation
- Integrated pre-filter for uf/mf membrane system30 Jul 2026US 2026/0216654 A1
Most cited
By later US patents
- Hot water disinfection of dialysis machines, including the extracorporeal circuit thereof490US 5,591,344 AAksys, Ltd. · 1997
- Hemodialysis machine with automatic priming by induced pressure pulses251US 5,863,421 AAksys, Ltd. · 1999
- Method of rinsing back blood to hemodialysis patient243US 5,690,831 AAksys, Ltd. · 1997
- Methods for ultrafiltration control in hemodialysis212US 5,725,776 AAksys, Ltd. · 1998
- Vertical skein of hollow fiber membranes and method of maintaining clean fiber surfaces while filtering a substrate to withdraw a permeate200US 5,639,373 AZenon Environmental Inc. · 1997