A47L 2401/30
Variation of electrical, magnetical or optical quantities
A47L2401/30 (Variation of electrical, magnetical or optical quantities) appears on 179 US grants and 222 published applications in this corpus.
Search patents in A47L- Granted patents
- 179
- Published applications
- 222
- Assignees
- 74
- Inventors
- 524
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 1 |
| 2002 | 0 | 4 |
| 2003 | 3 | 3 |
| 2004 | 3 | 9 |
| 2005 | 2 | 5 |
| 2006 | 3 | 0 |
| 2007 | 1 | 8 |
| 2008 | 3 | 4 |
| 2009 | 2 | 4 |
| 2010 | 5 | 8 |
| 2011 | 6 | 9 |
| 2012 | 3 | 6 |
| 2013 | 4 | 9 |
| 2014 | 5 | 9 |
| 2015 | 6 | 8 |
| 2016 | 6 | 10 |
| 2017 | 9 | 13 |
| 2018 | 13 | 15 |
| 2019 | 7 | 8 |
| 2020 | 10 | 18 |
| 2021 | 9 | 8 |
| 2022 | 15 | 13 |
| 2023 | 11 | 13 |
| 2024 | 12 | 15 |
| 2025 | 14 | 12 |
| 2026 | 8 | 10 |
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.
- Dishwasher2 Jun 2026US 12,642,419 B2Samsung Electronics Co., Ltd.
- Dishwashing appliance and communication-based operation thereof26 May 2026US 12,635,844 B2Haier US Appliance Solutions, Inc.
- Dishwasher28 Apr 2026US 12,611,083 B2LG Electronics Inc.
- Dish washer28 Apr 2026US 12,611,084 B2LG Electronics Inc.
- Dishwasher and control method therefor24 Sep 2026US 2026/0283441 A1LG Electronics Inc.
- Home appliance having display apparatus and controlling method thereof14 May 2026US 2026/0130571 A1Dgt Corporation
- Systems and methods for dishmachine smart heater23 Apr 2026US 2026/0108127 A1Ecolab USA Inc.
- Dispensing cup monitoring for a dishwasher appliance16 Apr 2026US 2026/0102041 A1Haier US Appliance Solutions, Inc.
- Dispensing cup monitoring for a dishwasher appliance16 Apr 2026US 2026/0102042 A1Haier US Appliance Solutions, Inc.
Most cited
By later US patents
- Industrial dishwasher monitor/controller with speech capability123US 4,509,543 ABeta Technology, Inc. · 1985
- Method of selecting a wash cycle for an appliance121US 5,611,867 AMaytag Corporation · 1997
- Industrial dishwasher chemical dispenser104US 4,756,321 ABeta Technology, Inc. · 1988
- Multi-function warewashing machine101US 5,131,419 A1992
- Ratio feed detergent controller and method with automatic feed rate learning capability73US 5,500,050 ADiversey, Inc. · 1996