H05B 3/40
Heating elements having the shape of rods or tubes
Official title: Heating elements having the shape of rods or tubes (H05B3/62, H05B3/68, H05B3/78 take precedence)
H05B3/40 (Heating elements having the shape of rods or tubes) appears on 3,062 US grants and 3,645 published applications in this corpus.
Search patents in H05B- Granted patents
- 3,062
- Published applications
- 3,645
- Assignees
- 1,428
- Inventors
- 5,938
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 25 | 0 |
| 1977 | 24 | 0 |
| 1978 | 27 | 0 |
| 1979 | 9 | 0 |
| 1980 | 20 | 0 |
| 1981 | 32 | 0 |
| 1982 | 35 | 0 |
| 1983 | 21 | 0 |
| 1984 | 29 | 0 |
| 1985 | 35 | 0 |
| 1986 | 33 | 0 |
| 1987 | 41 | 0 |
| 1988 | 30 | 0 |
| 1989 | 21 | 0 |
| 1990 | 22 | 0 |
| 1991 | 34 | 0 |
| 1992 | 21 | 0 |
| 1993 | 27 | 0 |
| 1994 | 19 | 0 |
| 1995 | 32 | 0 |
| 1996 | 29 | 0 |
| 1997 | 22 | 0 |
| 1998 | 37 | 0 |
| 1999 | 42 | 0 |
| 2000 | 51 | 0 |
| 2001 | 45 | 19 |
| 2002 | 40 | 43 |
| 2003 | 31 | 38 |
| 2004 | 40 | 52 |
| 2005 | 24 | 45 |
| 2006 | 48 | 52 |
| 2007 | 39 | 73 |
| 2008 | 25 | 60 |
| 2009 | 19 | 66 |
| 2010 | 28 | 71 |
| 2011 | 33 | 90 |
| 2012 | 42 | 62 |
| 2013 | 65 | 109 |
| 2014 | 54 | 114 |
| 2015 | 57 | 126 |
| 2016 | 100 | 183 |
| 2017 | 105 | 232 |
| 2018 | 140 | 261 |
| 2019 | 192 | 247 |
| 2020 | 190 | 294 |
| 2021 | 176 | 235 |
| 2022 | 196 | 249 |
| 2023 | 180 | 252 |
| 2024 | 211 | 288 |
| 2025 | 176 | 211 |
| 2026 | 88 | 173 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Safety belt and safety belt heating apparatus6 Oct 2026US 12,752,732 B2Autoliv Development AB
- Apparatus and method for heating smokable material6 Oct 2026US 12,757,297 B2Nicoventures Trading Limited
- Heating device29 Sep 2026US 12,745,798 B2Shenzhen First Union Technology Co., Ltd.
- Heat generation cell, heat generation device, and heat utilization system29 Sep 2026US 12,747,893 B2Clean Planet Inc.
- Heater including a heating wire having a zig-zag shape, and a fixing device, an image formation device, and a heating device with such a heater29 Sep 2026US 12,748,368 B2Misuzu Industry Co., Ltd.
- A method of operating a baking oven and baking oven8 Oct 2026US 2026/0305621 A1E. G. O. Elektro-Geratebau GmbH
- Heating system for a cooking appliance8 Oct 2026US 2026/0309336 A1Haier US Appliance Solutions, Inc.
- Portable electric wax melting device8 Oct 2026US 2026/0309348 A1
- Heater device, heating unit, and method for manufacturing heater device8 Oct 2026US 2026/0313757 A1Nichias Corporation
- Heating system for a cooking appliance8 Oct 2026US 2026/0313758 A1Haier US Appliance Solutions, Inc.
Most cited
By later US patents
- Heater for an electric flavor-generating article814US 5,322,075 APhilip Morris Incorporated · 1994
- Electrical smoking system for delivering flavors and method for making same740US 5,388,594 APhilip Morris Incorporated · 1995
- Composite tubing product726US 4,194,536 AEaton Corporation · 1980
- Flavor generating article710US 5,865,185 APhilip Morris Incorporated · 1999
- Tobacco-containing smoking article622US 7,726,320 B2R. J. Reynolds Tobacco Company · 2010