A47J 36/28
Warming devices generating the heat by exothermic reactions
Official title: Warming devices generating the heat by exothermic reactions, e.g. heat released by the contact of unslaked lime with water
A47J36/28 (Warming devices generating the heat by exothermic reactions) appears on 169 US grants and 155 published applications in this corpus.
Search patents in A47J- Granted patents
- 169
- Published applications
- 155
- Assignees
- 88
- Inventors
- 313
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 4 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 11 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 7 | 0 |
| 1996 | 5 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 5 | 0 |
| 2000 | 5 | 0 |
| 2001 | 6 | 4 |
| 2002 | 4 | 9 |
| 2003 | 7 | 5 |
| 2004 | 4 | 5 |
| 2005 | 5 | 13 |
| 2006 | 6 | 5 |
| 2007 | 1 | 7 |
| 2008 | 3 | 8 |
| 2009 | 1 | 7 |
| 2010 | 1 | 8 |
| 2011 | 3 | 7 |
| 2012 | 3 | 8 |
| 2013 | 6 | 5 |
| 2014 | 2 | 9 |
| 2015 | 6 | 4 |
| 2016 | 7 | 6 |
| 2017 | 4 | 7 |
| 2018 | 8 | 7 |
| 2019 | 2 | 4 |
| 2020 | 3 | 6 |
| 2021 | 4 | 8 |
| 2022 | 4 | 5 |
| 2023 | 5 | 2 |
| 2024 | 2 | 2 |
| 2025 | 1 | 1 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Heated food container11 Aug 2026US 12,702,251 B2
- Flameless method of heating food or food containers20 Jan 2026US 12,528,981 B2Forever Young International, Inc.
- Disposable baby bottle warmer for use anywhere18 Feb 2025US 12,226,046 B2Tempra Technology, Inc.
- Heat tray systems and portable heating and monitoring technologies3 Dec 2024US 12,156,613 B2Forever Young International, Inc.
- Thermal liquid container system9 Apr 2024US 11,952,197 B2The Curators of the University of Missouri
- Expandable exothermic gel compositions and methods of use23 Jul 2026US 2026/0209591 A1Forever Young International, Inc.
- Self-contained hot meal assembly with steam vent9 Jul 2026US 2026/0193012 A1
- Thawing method and thawing device set for frozen sushi9 Apr 2026US 2026/0096567 A1Cool-Japan Inc.
- Flameless method of heating food or food containers31 Jul 2025US 2025/0241481 A1Forever Young International, Inc.
- Heated food container5 Dec 2024US 2024/0398162 A1
Most cited
By later US patents
- Display with reflective polarizer and randomizing cavity136US 6,025,897 A3M Innovative Properties Company · 2000
- Self-regulating heat pack123US 5,984,953 ATempra Technology, Inc. · 1999
- Heat exchange package for food104US 3,970,068 A1976
- Container cap98US 5,255,812 A1993
- Feeding bottle90US 6,123,065 A2000