B01D 65/025
Removal of membrane elements before washing
Official title: {Removal of membrane elements before washing}
B01D65/025 (Removal of membrane elements before washing) appears on 20 US grants and 28 published applications in this corpus.
Search patents in B01D- Granted patents
- 20
- Published applications
- 28
- Assignees
- 19
- Inventors
- 75
- Latest grant
- 27 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 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 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 2 |
| 2011 | 0 | 4 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 3 | 1 |
| 2015 | 0 | 4 |
| 2016 | 1 | 1 |
| 2017 | 1 | 0 |
| 2018 | 3 | 1 |
| 2019 | 2 | 5 |
| 2020 | 1 | 3 |
| 2021 | 2 | 1 |
| 2022 | 1 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Microporous membrane, and preparation method therefor and application thereof6 Aug 2026US 2026/0229711 A1Shenzhen Senior Technology Material Co., Ltd.
- Use of extended surfactants in process membrane cleaning9 Jun 2022US 2022/0176324 A1Ecolab USA Inc.
- Process for cleaning a membrane comprising drying the membrane20 May 2021US 2021/0146312 A1Dupont Safety & Construction, Inc.
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Most cited
By later US patents
- Membrane cleaning process33US 4,740,308 AChampion International Corporation · 1988
- Methods for treating membranes and separation facilities and membrane treatment composition26US 7,220,358 B2Ecolab Inc. · 2007
- Method for cleaning filtration membrane modules and membrane bioreactor system for treating untreated water or wastewater or activated sludge9US 8,580,115 B2Microdyn-Nadir GmbH · 2013
- Self-cleaning reverse osmosis liquid treatment system, method and dual configuration check valve therefor6US 4,961,851 A1990
- Membrane separation apparatus for fuel gas conditioning6US 8,906,143 B2Membrane Technology and Research, Inc. · 2014