A47L 15/4204
Flat filters
Official title: {Flat filters}
A47L15/4204 (Flat filters) appears on 138 US grants and 147 published applications in this corpus.
Search patents in A47L- Granted patents
- 138
- Published applications
- 147
- Assignees
- 43
- Inventors
- 275
- Latest grant
- 7 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 5 | 0 |
| 1998 | 9 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 1 |
| 2003 | 3 | 5 |
| 2004 | 3 | 10 |
| 2005 | 1 | 4 |
| 2006 | 3 | 32 |
| 2007 | 5 | 8 |
| 2008 | 3 | 10 |
| 2009 | 7 | 4 |
| 2010 | 10 | 9 |
| 2011 | 10 | 2 |
| 2012 | 5 | 8 |
| 2013 | 2 | 3 |
| 2014 | 6 | 5 |
| 2015 | 5 | 5 |
| 2016 | 4 | 4 |
| 2017 | 3 | 3 |
| 2018 | 4 | 7 |
| 2019 | 7 | 2 |
| 2020 | 2 | 2 |
| 2021 | 2 | 4 |
| 2022 | 2 | 2 |
| 2023 | 4 | 4 |
| 2024 | 3 | 3 |
| 2025 | 5 | 6 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Dishwasher with dirt discharge system7 Apr 2026US 12,593,953 B2Illinois Tool Works Inc.
- Filter device for a dishwasher or washing machine2 Dec 2025US 12,485,370 B2Hans-Jaochim Schneider GmbH
- Filter cleaning apparatus and method for dishwashing appliance11 Nov 2025US 12,465,191 B2Midea Group Co., Ltd.
- Filtration assembly with grinding mechanism4 Nov 2025US 12,458,197 B2Midea Group Co., Ltd.
- Dishwasher with residue disposal device and control method therefor9 Sep 2025US 12,408,810 B1Zhejiang Seng Smart Kitchen Appliance Co., Ltd
- Fluid circulation assembly for a dishwasher appliance17 Sep 2026US 2026/0272256 A1Haier US Appliance Solutions, Inc.
- Dishwasher27 Aug 2026US 2026/0248356 A1LG Electronics Inc.
- Dish washer and wash water filter module9 Jul 2026US 2026/0191394 A1LG Electronics Inc.
- Sponge filter16 Apr 2026US 2026/0102045 A1Serdar Plastik
- Dishwasher with residue disposal device and control method therefor11 Sep 2025US 2025/0281020 A1Zhejiang Seng Smart Kitchen Appliance Co., Ltd
Most cited
By later US patents
- Dishwasher accumulator soil removal grating for a filter system127US 5,711,326 AWhirlpool Corporation · 1998
- Dishwasher113US 5,470,142 AFisher & Paykel Limited · 1995
- Dishwasher97US 5,755,244 AFisher & Paykel Limited · 1998
- Soil separation channel for dishwasher pump system60US 5,803,100 AWhirlpool Corporation · 1998
- Dishwasher soil collecting circuit49US 4,392,891 AHobart Corporation · 1983