H05B 7/00
Heating by electric discharge
Official title: Heating by electric discharge (plasma torches H05H1/26)
H05B7/00 (Heating by electric discharge) appears on 949 US grants and 409 published applications in this corpus.
Search patents in H05B- Granted patents
- 949
- Published applications
- 409
- Assignees
- 464
- Inventors
- 1,782
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 31 | 0 |
| 1977 | 33 | 0 |
| 1978 | 34 | 0 |
| 1979 | 32 | 0 |
| 1980 | 23 | 0 |
| 1981 | 26 | 0 |
| 1982 | 23 | 0 |
| 1983 | 34 | 0 |
| 1984 | 52 | 0 |
| 1985 | 38 | 0 |
| 1986 | 45 | 0 |
| 1987 | 54 | 0 |
| 1988 | 34 | 0 |
| 1989 | 20 | 0 |
| 1990 | 14 | 0 |
| 1991 | 11 | 0 |
| 1992 | 20 | 0 |
| 1993 | 20 | 0 |
| 1994 | 21 | 0 |
| 1995 | 21 | 0 |
| 1996 | 17 | 0 |
| 1997 | 9 | 0 |
| 1998 | 18 | 0 |
| 1999 | 20 | 0 |
| 2000 | 17 | 0 |
| 2001 | 13 | 4 |
| 2002 | 17 | 13 |
| 2003 | 13 | 4 |
| 2004 | 6 | 7 |
| 2005 | 7 | 17 |
| 2006 | 7 | 16 |
| 2007 | 12 | 9 |
| 2008 | 4 | 19 |
| 2009 | 1 | 12 |
| 2010 | 6 | 14 |
| 2011 | 5 | 11 |
| 2012 | 6 | 19 |
| 2013 | 8 | 18 |
| 2014 | 14 | 15 |
| 2015 | 9 | 24 |
| 2016 | 14 | 19 |
| 2017 | 15 | 21 |
| 2018 | 16 | 14 |
| 2019 | 18 | 18 |
| 2020 | 15 | 22 |
| 2021 | 13 | 14 |
| 2022 | 22 | 21 |
| 2023 | 9 | 13 |
| 2024 | 15 | 21 |
| 2025 | 11 | 28 |
| 2026 | 6 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Converter device and electric power supply apparatus4 Aug 2026US 12,698,937 B2Danieli Automation S.P.A.
- Temperature sensors28 Jul 2026US 12,693,171 B2Iowa State University Research Foundation, Inc.
- Flexible power supply device for AC arc furnace, and control method thereof21 Jul 2026US 12,689,303 B2Rongxin Huiko Electric Co., Ltd.
- Localized heating device and localized heating system having the same9 Jun 2026US 12,652,733 B2Industrial Technology Research Institute
- Atmospheric pressure plasma reduction of copper oxide to copper metal5 May 2026US 12,617,146 B1Surfx Technologies LLC
- Electric power supply apparatus for an electric furnace17 Sep 2026US 2026/0282183 A1Danieli Automation S.P.A.
- Heating and cooling inhalation device10 Sep 2026US 2026/0262730 A1Past Patterns, LLC
- Light power source13 Aug 2026US 2026/0239500 A1
- Furnace power supply apparatus, system for the power supply of a furnace, furnace, use of the furnace power supply apparatus and operating method30 Jul 2026US 2026/0223261 A1SMS group GmbH
- Light source apparatus23 Jul 2026US 2026/0214752 A1Lasertec Corporation
Most cited
By later US patents
- One atmosphere, uniform glow discharge plasma139US 5,414,324 AThe University of Tennessee Research Corporation · 1995
- Graphite body103US 5,015,518 AToyo Carbon Co., Ltd. · 1991
- Segmented electric furnace102US 5,132,984 ANorton Company · 1992
- Method and apparatus for glow discharge plasma treatment of polymer materials at atmospheric pressure95US 5,456,972 AThe University of Tennessee Research Corporation · 1995
- Method and apparatus for glow discharge plasma treatment of polymer materials at atmospheric pressure89US 5,403,453 AThe University of Tennessee Research Corporation · 1995