H05B 3/76
Plates with spirally-wound heating tubes
H05B3/76 (Plates with spirally-wound heating tubes) appears on 63 US grants and 45 published applications in this corpus.
Search patents in H05B- Granted patents
- 63
- Published applications
- 45
- Assignees
- 33
- Inventors
- 111
- Latest grant
- 6 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 5 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 5 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 1 |
| 2016 | 0 | 3 |
| 2017 | 0 | 2 |
| 2018 | 1 | 6 |
| 2019 | 3 | 0 |
| 2020 | 1 | 4 |
| 2021 | 2 | 9 |
| 2022 | 5 | 5 |
| 2023 | 5 | 7 |
| 2024 | 5 | 3 |
| 2025 | 4 | 0 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Food serving station and associated appliances and methods6 Jan 2026US 12,514,402 B2Duke Manufacturing Co.
- Safe cooking system7 Oct 2025US 12,435,880 B1
- Dual coil electric heating element17 Jun 2025US 12,334,288 B2Backer EHP Inc.
- Method for soldering heating elements to create an electric heating device or a heating source; corresponding electric heating device3 Jun 2025US 12,318,855 B2Thermocoax
- Stage, film-forming apparatus, and film-processing apparatus28 Jan 2025US 12,211,710 B2NHK Spring Co., Ltd.
- 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.
- Heating apparatus for facilitating uniform high-power heating of liquid and methods of manufacturing a heating apparatus17 Sep 2026US 2026/0282168 A1
- Food serving station and associated appliances and methods16 Apr 2026US 2026/0102022 A1Duke Manufacturing Co.
- Food serving station and associated appliances and methods24 Oct 2024US 2024/0349943 A1Duke Manufacturing Co.
Most cited
By later US patents
- Device and method for cooktop fire mitigation34US 9,132,302 B2Primaira, LLC · 2015
- Electric heating elements27US 4,214,150 AEmerson Electric Co. · 1980
- Electrical resistance heater24US 5,053,603 ADonaldson Company, Inc. · 1991
- Electric range surface element22US 4,435,638 AJenn Air Corporation · 1984
- Diesel engine gas filter with electrical heater20US 5,101,095 ADonaldson Company, Inc. · 1992