H05B 2203/028
Heaters specially adapted for trays or plates to keep food or liquids
Official title: Heaters specially adapted for trays or plates to keep food or liquids hot
H05B2203/028 (Heaters specially adapted for trays or plates to keep food or liquids) appears on 62 US grants and 51 published applications in this corpus.
Search patents in H05B- Granted patents
- 62
- Published applications
- 51
- Assignees
- 46
- Inventors
- 138
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 5 | 0 |
| 2001 | 5 | 1 |
| 2002 | 5 | 6 |
| 2003 | 2 | 2 |
| 2004 | 0 | 0 |
| 2005 | 4 | 4 |
| 2006 | 1 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 2 |
| 2010 | 1 | 3 |
| 2011 | 0 | 4 |
| 2012 | 2 | 3 |
| 2013 | 2 | 3 |
| 2014 | 3 | 1 |
| 2015 | 3 | 1 |
| 2016 | 0 | 1 |
| 2017 | 2 | 2 |
| 2018 | 2 | 2 |
| 2019 | 1 | 2 |
| 2020 | 0 | 2 |
| 2021 | 1 | 1 |
| 2022 | 1 | 3 |
| 2023 | 1 | 3 |
| 2024 | 2 | 0 |
| 2025 | 1 | 0 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Food warming pad14 Jul 2026US 12,684,658 B1Guangdong Willing Technology Corporation
- Heated high chair4 Feb 2025US 12,213,621 B2
- Electric heater12 Nov 2024US 12,144,070 B2LG Electronics Inc.
- Temperature controlled food tray system25 Jun 2024US RE50,019 E1Duke Manufacturing Co.
- Electric heater9 May 2023US 11,647,567 B2LG Electronics Inc.
- Heating tray6 Aug 2026US 2026/0224067 A1OnKey Electronic Technology Co.,Ltd
- Food warming pad16 Jul 2026US 2026/0206100 A1Guangdong Willing Technology Corporation
- Power supply device for warm-keeping and heating of container30 Nov 2023US 2023/0389138 A1Shenzhen Dingcheng Litian Technology Co., Ltd.
- Electric heater6 Apr 2023US 2023/0104438 A1LG Electronics Inc.
- Shelving and storage system having adjustable heated shelves26 Jan 2023US 2023/0028901 A1InterMetro Industries Corporation
Most cited
By later US patents
- Rechargeable phase change material unit and food warming device160US 5,884,006 A1999
- Food warning device containing a rechargeable phase change material108US 6,108,489 APhase Change Laboratories, Inc. · 2000
- Portable and self-contained system for maintaining prepared meals in a cool state and reheating them77US 6,279,470 B1Biontronics S.A. · 2001
- Apparatus and method for heated food delivery77US 6,384,387 B1Vesture Corporation · 2002
- Apparatus and method for heated food delivery67US 6,555,789 B2Vesture Corporation · 2003