H05B 3/68
Heating arrangements specially adapted for cooking plates or analogous hot-plates
H05B3/68 (Heating arrangements specially adapted for cooking plates or analogous hot-plates) appears on 1,106 US grants and 884 published applications in this corpus.
Search patents in H05B- Granted patents
- 1,106
- Published applications
- 884
- Assignees
- 374
- Inventors
- 1,859
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 15 | 0 |
| 1977 | 16 | 0 |
| 1978 | 4 | 0 |
| 1979 | 9 | 0 |
| 1980 | 10 | 0 |
| 1981 | 14 | 0 |
| 1982 | 11 | 0 |
| 1983 | 17 | 0 |
| 1984 | 20 | 0 |
| 1985 | 19 | 0 |
| 1986 | 10 | 0 |
| 1987 | 14 | 0 |
| 1988 | 24 | 0 |
| 1989 | 19 | 0 |
| 1990 | 21 | 0 |
| 1991 | 31 | 0 |
| 1992 | 23 | 0 |
| 1993 | 23 | 0 |
| 1994 | 16 | 0 |
| 1995 | 21 | 0 |
| 1996 | 14 | 0 |
| 1997 | 9 | 0 |
| 1998 | 16 | 0 |
| 1999 | 37 | 0 |
| 2000 | 56 | 0 |
| 2001 | 44 | 17 |
| 2002 | 36 | 36 |
| 2003 | 22 | 39 |
| 2004 | 30 | 50 |
| 2005 | 26 | 48 |
| 2006 | 36 | 34 |
| 2007 | 13 | 30 |
| 2008 | 15 | 39 |
| 2009 | 16 | 22 |
| 2010 | 17 | 19 |
| 2011 | 14 | 21 |
| 2012 | 16 | 14 |
| 2013 | 18 | 22 |
| 2014 | 15 | 21 |
| 2015 | 21 | 36 |
| 2016 | 12 | 27 |
| 2017 | 12 | 35 |
| 2018 | 34 | 51 |
| 2019 | 30 | 49 |
| 2020 | 26 | 46 |
| 2021 | 27 | 53 |
| 2022 | 42 | 46 |
| 2023 | 31 | 49 |
| 2024 | 41 | 38 |
| 2025 | 31 | 22 |
| 2026 | 12 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H05B 3/74Non-metallic plates724
- H05B 3/76Plates with spirally-wound heating tubes63
- H05B 3/70Plates of cast metal39
- H05B 3/72Plates of sheet metal39
- H05B 3/688Fabrication of the plates17
- H05B 3/685Plates having magnetic means attracting the kettles, pans, or the like15
- H05B 3/683Plates having their feeding circuit closed as the kettles, pans or the13
- H05B 3/686Heat-storage plates12
All 9 subgroupsShow fewer
Recent patents
- Fault reset system for an appliance22 Sep 2026US 12,742,554 B2Haier US Appliance Solutions, Inc.
- Cooking appliance comprising a radiant heater15 Sep 2026US 12,736,225 B2Eika, S.Coop.
- Cooktop apparatus and method of cleaning25 Aug 2026US 12,716,591 B2Midea Group Co., Ltd.
- Cooktop and resilient element support28 Jul 2026US 12,693,025 B2Haier US Appliance Solutions, Inc.
- Food warming pad14 Jul 2026US 12,684,658 B1Guangdong Willing Technology Corporation
- Heating system for a cooking appliance8 Oct 2026US 2026/0313753 A1Haier US Appliance Solutions, Inc.
- Heating system for a cooking appliance8 Oct 2026US 2026/0313754 A1Haier US Appliance Solutions, Inc.
- Mass transfer apparatus and mass transfer method thereof8 Oct 2026US 2026/0314318 A1Century Technology (Shenzhen) Corporation Limited
- Cooking appliance24 Sep 2026US 2026/0292940 A1LG Electronics Inc.
- Laboratory device having a heating function17 Sep 2026US 2026/0273533 A1IKA-Werke GmbH & Co. KG
Most cited
By later US patents
- Unit for varying a temperature of a test piece and testing instrument incorporating same549US 7,115,838 B2Espec Corp. · 2006
- Touch switch with flexible, intermediate conductive spacer as sensor button194US 5,917,165 AE. G. O. Elektro-Geraetebau GmbH · 1999
- Rechargeable phase change material unit and food warming device160US 5,884,006 A1999
- Multi-purpose cooker136US 6,082,249 A2000
- Food warning device containing a rechargeable phase change material108US 6,108,489 APhase Change Laboratories, Inc. · 2000