A47J 39/02
Dish-warmers
Official title: Dish-warmers; Devices to keep food hot
A47J39/02 (Dish-warmers) appears on 133 US grants and 166 published applications in this corpus.
Search patents in A47J- Granted patents
- 133
- Published applications
- 166
- Assignees
- 80
- Inventors
- 280
- Latest grant
- 16 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 5 |
| 2003 | 4 | 2 |
| 2004 | 0 | 1 |
| 2005 | 3 | 1 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 2 | 7 |
| 2011 | 0 | 3 |
| 2012 | 5 | 5 |
| 2013 | 2 | 10 |
| 2014 | 5 | 13 |
| 2015 | 5 | 11 |
| 2016 | 4 | 5 |
| 2017 | 6 | 10 |
| 2018 | 12 | 13 |
| 2019 | 9 | 10 |
| 2020 | 5 | 9 |
| 2021 | 7 | 7 |
| 2022 | 5 | 8 |
| 2023 | 7 | 8 |
| 2024 | 5 | 14 |
| 2025 | 10 | 14 |
| 2026 | 0 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Food warming tray16 Dec 2025US 12,501,522 B1
- Three dimensional induction rethermalizing stations and control systems11 Nov 2025US 12,465,171 B2The Vollrath Company, L.L.C.
- Temperature-controlled meal transport28 Oct 2025US 12,453,442 B2
- System and method for managing the delivery of a food product7 Oct 2025US 12,437,257 B2Little Caesar Enterprises, Inc.
- Flexible heat preservation board with heating wire encapsulated therein1 Jul 2025US 12,349,244 B2Guangdong Willing Technology Corporation
- Food warming pad16 Jul 2026US 2026/0206100 A1Guangdong Willing Technology Corporation
- Warming Holding Cabinet2 Jul 2026US 2026/0182781 A1Carter-Hoffmann LLC
- Box for a hot plate28 May 2026US 2026/0145862 A1
- Method for operating a heating means of a cooking appliance23 Apr 2026US 2026/0110441 A1Miele & Cie. KG
- Foldable food warming pad16 Apr 2026US 2026/0102015 A1Guangdong Willing Technology Corporation
Most cited
By later US patents
- Heated or cooled dishware and drinkware169US 9,035,222 B2Oromo Technologies, Inc. · 2015
- Heated or cooled dishwasher safe dishware and drinkware88US 8,618,448 B2Piatto Technologies, Inc. · 2013
- Heated or cooled dishware and drinkware82US 9,814,331 B2Ember Technologies, Inc. · 2017
- Heated or cooled dishwasher safe dishware and drinkware69US 8,759,721 B1Piatto Technologies, Inc. · 2014
- Portable electrically heated warming container for transporting infusions in a rescue vehicle62US 4,523,078 ABinz GmbH & Co. · 1985