F25D 21/008
By timer
Official title: {by timer}
F25D21/008 (By timer) appears on 119 US grants and 97 published applications in this corpus.
Search patents in F25D- Granted patents
- 119
- Published applications
- 97
- Assignees
- 67
- Inventors
- 254
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 4 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 4 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 4 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 4 | 1 |
| 2002 | 2 | 3 |
| 2003 | 5 | 3 |
| 2004 | 1 | 1 |
| 2005 | 1 | 1 |
| 2006 | 0 | 3 |
| 2007 | 1 | 2 |
| 2008 | 2 | 1 |
| 2009 | 0 | 1 |
| 2010 | 1 | 1 |
| 2011 | 0 | 2 |
| 2012 | 0 | 4 |
| 2013 | 2 | 0 |
| 2014 | 1 | 3 |
| 2015 | 2 | 10 |
| 2016 | 2 | 3 |
| 2017 | 0 | 2 |
| 2018 | 4 | 10 |
| 2019 | 5 | 9 |
| 2020 | 7 | 8 |
| 2021 | 12 | 11 |
| 2022 | 12 | 5 |
| 2023 | 2 | 4 |
| 2024 | 5 | 3 |
| 2025 | 3 | 4 |
| 2026 | 4 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Storehouse having a heater for a heat exchanger1 Sep 2026US 12,723,800 B2LG Electronics Inc.
- Refrigerator2 Jun 2026US 12,644,637 B2LG Electronics Inc.
- Method for operating a household refrigerator having specific operating process coordination in dependence upon a quiet time interval, and household refrigerator17 Mar 2026US 12,578,135 B2BSH Hausgeräte GmbH
- Refrigerator20 Jan 2026US 12,529,505 B2LG Electronics Inc.
- Defrost control method and heat pump system11 Nov 2025US 12,467,680 B2Carrier Corporation
- Method and apparatus for determining freezer status25 Jun 2026US 2026/0177309 A1Elemental Machines, Inc.
- Pet feeder, temperature control method thereof and computer-readable storage medium30 Apr 2026US 2026/0118051 A1Ubtech Robotics Corp Ltd
- Intelligent crisper2 Oct 2025US 2025/0305762 A1Whirlpool Corporation
- Active vaporization of moisture in a thermoelectric module or subsystem10 Apr 2025US 2025/0116449 A1
- Electronic device, method, and computer readable storage medium for managing defrosting period of refrigerator30 Jan 2025US 2025/0035364 A1Samsung Electronics Co., Ltd.
Most cited
By later US patents
- Method and device for monitoring the operation of a motor150US 5,512,883 A1996
- Fuzzy logic based controller for cooling and refrigerating systems108US 5,440,891 A1995
- Refrigeration apparatus demand defrost control system and method67US 4,173,871 AGeneral Electric Company · 1979
- Refrigeration defrost control61US 4,356,703 AMcQuay-Perfex Inc. · 1982
- Defrosting system for a heat exchanger57US 4,887,436 AMitsubishi Denki Kabushiki Kaisha · 1989