B01J 49/90
Regeneration or reactivation of ion-exchangers: having devices which prevent back-flow of the
Official title: having devices which prevent back-flow of the ion-exchange mass during regeneration
B01J49/90 (Regeneration or reactivation of ion-exchangers: having devices which prevent back-flow of the) appears on 15 US grants and 7 published applications in this corpus.
Search patents in B01J- Granted patents
- 15
- Published applications
- 7
- Assignees
- 11
- Inventors
- 34
- Latest grant
- 10 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 1 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 1 | 2 |
| 2022 | 0 | 0 |
| 2023 | 2 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Multi-sequence water softener system and method10 Mar 2026US 12,570,549 B2
- Multi-sequence water softener system and method21 Nov 2023US 11,820,677 B2
- Water treatment tank with distributor plate assembly and method of assembly21 Mar 2023US 11,607,625 B2Ecowater Systems, Inc.
- Fixed bed counter-current regeneration device of ion exchange resin and application method of fixed bed counter-current regeneration device31 Aug 2021US 11,103,865 B2Nanjing Normal University
- Systems for fluid treatment having fluid release cycle3 May 2016US 9,328,001 B2Water-Right, Inc.
- Multi-Sequence Water Softener System and Method7 Mar 2024US 2024/0076208 A1
- Multi-Sequence Water Softener System and Method5 Aug 2021US 2021/0238061 A1
- Fixed Bed Counter-current Regeneration Device Of Ion Exchange Resin And Application Method Of Fixed Bed Counter-current Regeneration Device3 Jun 2021US 2021/0162397 A1Nanjing University
- Water treatment tank with distributor plate assembly and method of assembly29 Oct 2020US 2020/0338471 A1Ecowater Systems, Inc.
- Methods and systems for fluid treatment having fluid release cycle7 May 2015US 2015/0122711 A1Water-Right, Inc.
Most cited
By later US patents
- Vertical reaction vessel91US 4,871,463 ASepratech · 1989
- Ion exchange methods and systems incorporating regenerant recycling19US 5,464,530 A1995
- Process for ion exchangers, particularly for regeneration after softening and demineralization of aqueous solutions15US 5,108,616 A1992
- Countercurrent regeneration process13US 5,348,659 AEDR Acquisition Corp. · 1994
- Method of ion exchange regeneration6US 4,379,855 AEcodyne Corporation · 1983