B01J 49/75
Regeneration or reactivation of ion-exchangers: of water softeners
Official title: of water softeners
B01J49/75 (Regeneration or reactivation of ion-exchangers: of water softeners) appears on 153 US grants and 122 published applications in this corpus.
Search patents in B01J- Granted patents
- 153
- Published applications
- 122
- Assignees
- 84
- Inventors
- 295
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 9 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 7 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 5 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 10 | 1 |
| 2002 | 3 | 3 |
| 2003 | 3 | 5 |
| 2004 | 4 | 1 |
| 2005 | 2 | 3 |
| 2006 | 3 | 5 |
| 2007 | 3 | 2 |
| 2008 | 0 | 2 |
| 2009 | 2 | 5 |
| 2010 | 2 | 3 |
| 2011 | 4 | 5 |
| 2012 | 2 | 5 |
| 2013 | 2 | 8 |
| 2014 | 5 | 5 |
| 2015 | 2 | 8 |
| 2016 | 6 | 7 |
| 2017 | 11 | 6 |
| 2018 | 7 | 8 |
| 2019 | 2 | 7 |
| 2020 | 3 | 5 |
| 2021 | 4 | 3 |
| 2022 | 3 | 4 |
| 2023 | 3 | 3 |
| 2024 | 2 | 6 |
| 2025 | 1 | 8 |
| 2026 | 4 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Water softening device28 Jul 2026US 12,691,444 B2Foshan Midea Chungho Water Purification Equipment Co., Ltd.
- Water softener26 May 2026US 12,636,643 B2Panasonic Intellectual Property Management Co., Ltd.
- Multi-sequence water softener system and method10 Mar 2026US 12,570,549 B2
- Water softener system and method of operating the same6 Jan 2026US 12,515,214 B2A. O. Smith Corporation
- Water softener apparatus including a salt level indicator device9 Sep 2025US 12,411,037 B2Harvey Water Softeners Limited
- Water softening control method and apparatus, electronic device and storage medium2 Jul 2026US 2026/0184601 A1Foshan Shunde Midea Water Dispenser Manufacturing Co., Ltd.
- Water softener system and method of operating the same18 Jun 2026US 2026/0166540 A1A. O. Smith Corporation
- Water softener29 Jan 2026US 2026/0028252 A1Panasonic Intellectual Property Management Co., Ltd.
- Water softener and control method for water softener1 Jan 2026US 2026/0001781 A1Panasonic Intellectual Property Management Co., Ltd.
- Water Softener Apparatus Including a Salt Level Indicator Device27 Nov 2025US 2025/0362167 A1Harvey Water Softeners Limited
Most cited
By later US patents