A47L 2501/05
Drain or recirculation pump
Official title: Drain or recirculation pump, e.g. regulation of the pump rotational speed or flow direction
A47L2501/05 (Drain or recirculation pump) appears on 192 US grants and 268 published applications in this corpus.
Search patents in A47L- Granted patents
- 192
- Published applications
- 268
- Assignees
- 57
- Inventors
- 433
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 0 | 1 |
| 2003 | 4 | 3 |
| 2004 | 0 | 7 |
| 2005 | 2 | 4 |
| 2006 | 2 | 13 |
| 2007 | 1 | 12 |
| 2008 | 2 | 5 |
| 2009 | 1 | 12 |
| 2010 | 8 | 8 |
| 2011 | 2 | 13 |
| 2012 | 4 | 23 |
| 2013 | 12 | 12 |
| 2014 | 14 | 14 |
| 2015 | 15 | 17 |
| 2016 | 12 | 12 |
| 2017 | 12 | 16 |
| 2018 | 12 | 16 |
| 2019 | 19 | 17 |
| 2020 | 6 | 11 |
| 2021 | 7 | 5 |
| 2022 | 10 | 4 |
| 2023 | 7 | 10 |
| 2024 | 9 | 11 |
| 2025 | 10 | 9 |
| 2026 | 3 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Warewash machine or other food equipment machine with contactor monitoring system11 Aug 2026US 12,706,254 B2Illinois Tool Works Inc.
- Dishwasher28 Jul 2026US 12,690,744 B2LG Electronics Inc.
- Dishwasher with dirt discharge system7 Apr 2026US 12,593,953 B2Illinois Tool Works Inc.
- Dishwasher11 Nov 2025US 12,465,189 B2LG Electronics Inc.
- Hydraulic system for a household appliance21 Oct 2025US 12,448,973 B2Copreci, S. Coop.
- Dishwasher appliance and a freeze prevention operation1 Oct 2026US 2026/0294202 A1Haier US Appliance Solutions, Inc.
- Washing method having discontinuous dispensing of washing liquor, and dishwasher10 Sep 2026US 2026/0262906 A1BSH Hausgeräte GmbH
- Dishwashing appliances with hot start features and related methods27 Aug 2026US 2026/0248346 A1Haier US Appliance Solutions, Inc.
- Dishwasher and method for controlling the same27 Aug 2026US 2026/0248347 A1LG Electronics Inc.
- Method for controlling dishwasher27 Aug 2026US 2026/0248351 A1LG Electronics Inc.
Most cited
By later US patents
- Movement reversal device, particularly for a dishwasher67US 7,047,986 B2BSH Bosch und Siemens Hausgeraete GmbH · 2006
- Apparatus for monitoring and controlling the operation of a machine for washing articles66US 5,603,233 AHoneywell Inc. · 1997
- Pump and soil collection system for a dishwasher46US 6,182,674 B2Whirlpool Corporation · 2001
- Commercial kitchenware washers and related methods43US 9,265,400 B2Duke Manufacturing Co. · 2016
- Electromechanically actuated turbidity sensor for a machine for washing articles40US 5,729,025 AHoneywell Inc. · 1998