B01D 2321/02
Forward flushing
B01D2321/02 (Forward flushing) appears on 186 US grants and 229 published applications in this corpus.
Search patents in B01D- Granted patents
- 186
- Published applications
- 229
- Assignees
- 184
- Inventors
- 629
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 0 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 6 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 8 | 0 |
| 2000 | 2 | 0 |
| 2001 | 7 | 0 |
| 2002 | 6 | 9 |
| 2003 | 4 | 16 |
| 2004 | 4 | 4 |
| 2005 | 5 | 7 |
| 2006 | 0 | 4 |
| 2007 | 2 | 8 |
| 2008 | 6 | 8 |
| 2009 | 3 | 11 |
| 2010 | 1 | 5 |
| 2011 | 1 | 6 |
| 2012 | 5 | 1 |
| 2013 | 3 | 5 |
| 2014 | 6 | 11 |
| 2015 | 4 | 12 |
| 2016 | 6 | 7 |
| 2017 | 5 | 13 |
| 2018 | 6 | 11 |
| 2019 | 4 | 8 |
| 2020 | 6 | 12 |
| 2021 | 9 | 16 |
| 2022 | 9 | 9 |
| 2023 | 8 | 12 |
| 2024 | 9 | 16 |
| 2025 | 7 | 10 |
| 2026 | 6 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Water purifier16 Jun 2026US 12,654,137 B2Coway Co., Ltd.
- Techniques for managing scale formation in reverse osmosis (RO) and nanofiltration (NF) systems and a hybrid filtration architecture implementing the same12 May 2026US 12,623,921 B2Clean H2O Technologies, LLC
- Direct production of lithium hydroxide from brine by electrochemical flow cells12 May 2026US 12,623,932 B2The Regents of the University of Michigan
- Chemical product comprising an anionic surfactant, chelant, and enzyme, and process for cleaning nanofiltration and reverse osmosis membranes7 Apr 2026US 12,595,436 B2Petroleo Brasileiro S.A. - Petrobras
- Methods for treating porous membranes24 Mar 2026US 12,582,944 B2Apache Corporation
- In line cleaning in place process for alternating tangential flow filter1 Oct 2026US 2026/0295539 A1Enzene Biosciences Limited
- Apparatus and process for recovery of a valuable material13 Aug 2026US 2026/0233129 A1Evonik Operations GmbH
- Water treatment systems14 May 2026US 2026/0131286 A1Pacific Advanced Civil Engineering, Inc.
- Water purifier9 Apr 2026US 2026/0097365 A1Coway Co., Ltd.
- Filter cleaning methods and apparatuses9 Apr 2026US 2026/0097367 A1Taiwan Semiconductor Manufacturing Company.Ltd
Most cited
By later US patents
- Method and apparatus for separation of matter from suspension229US 5,194,145 A1993
- Automatic flushing system for membrane separation machines such as reverse osmosis machines177US 3,992,301 ARaypak, Inc. · 1976
- Hemo(Dia)filtration apparatus158US 5,846,419 AFresenius AG · 1998
- System for maintaining a clean skein of hollow fibers while filtering suspended solids154US 5,944,997 AZenon Environmental Inc. · 1999
- System for maintaining a clean skein of hollow fibers while filtering suspended solids137US 6,193,890 B1Zenon Environmental Inc. · 2001