A47J 31/605
Water filters
Official title: {Water filters}
A47J31/605 (Water filters) appears on 128 US grants and 129 published applications in this corpus.
Search patents in A47J- Granted patents
- 128
- Published applications
- 129
- Assignees
- 93
- Inventors
- 293
- Latest grant
- 5 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 5 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 6 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 1 |
| 2002 | 1 | 2 |
| 2003 | 2 | 2 |
| 2004 | 2 | 3 |
| 2005 | 1 | 2 |
| 2006 | 1 | 3 |
| 2007 | 1 | 4 |
| 2008 | 1 | 2 |
| 2009 | 1 | 6 |
| 2010 | 2 | 5 |
| 2011 | 0 | 4 |
| 2012 | 6 | 3 |
| 2013 | 1 | 1 |
| 2014 | 4 | 1 |
| 2015 | 2 | 7 |
| 2016 | 2 | 9 |
| 2017 | 1 | 7 |
| 2018 | 10 | 10 |
| 2019 | 4 | 9 |
| 2020 | 4 | 9 |
| 2021 | 14 | 8 |
| 2022 | 7 | 5 |
| 2023 | 8 | 9 |
| 2024 | 6 | 9 |
| 2025 | 3 | 6 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Cartridge extraction unit for water purifier5 May 2026US 12,616,333 B2Strauss Water Ltd
- System for automatic refilling water pitcher24 Mar 2026US 12,583,732 B2
- Coffee machine filter cartridges24 Feb 2026US 12,557,939 B2Tianjin Yunda Industry and Trade Co., Ltd.
- Nitro/cold brew automated robotic kiosk with contactless technology3 Jun 2025US 12,318,033 B2
- Beverage providing device3 Jun 2025US 12,322,238 B2New Innovations Inc.
- Portable Water Dispenser With Integrated Air-To-Water Generation System28 May 2026US 2026/0146421 A1Kara Water, Inc.
- Beverage dispensing machine and method for controlling the same26 Mar 2026US 2026/0083277 A1Societe des Produits Nestle S. A.
- System for automatic refilling water pitcher28 Aug 2025US 2025/0270084 A1
- Water purifier and controlling method thereof17 Jul 2025US 2025/0228391 A1Samsung Electronics Co., Ltd.
- Hot beverage maker for aircraft15 May 2025US 2025/0151949 A1B/E Aerospace, Inc.
Most cited
By later US patents
- Water treatment device having means to count times used and limit useage145US 5,190,643 AMr. Coffee, Inc. · 1993
- Filter assembly for water treatment apparatus109US 5,637,214 A1997
- Simplified method and apparatus for purification82US 4,948,499 APurewater Science International, Inc. · 1990
- Water filter module47US 5,318,703 AUltraPure Systems, Inc. · 1994
- Point-of-use water treatment system47US 5,846,418 ATeledyne Industries, Inc. · 1998