B23K 3/021
Flame-heated soldering irons
Official title: {Flame-heated soldering irons}
B23K3/021 (Flame-heated soldering irons) appears on 51 US grants and 27 published applications in this corpus.
Search patents in B23K- Granted patents
- 51
- Published applications
- 27
- Assignees
- 23
- Inventors
- 80
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 2 | 3 |
| 2005 | 3 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 2 | 2 |
| 2011 | 1 | 0 |
| 2012 | 0 | 2 |
| 2013 | 1 | 1 |
| 2014 | 1 | 0 |
| 2015 | 0 | 2 |
| 2016 | 4 | 2 |
| 2017 | 0 | 0 |
| 2018 | 2 | 4 |
| 2019 | 0 | 1 |
| 2020 | 2 | 1 |
| 2021 | 1 | 0 |
| 2022 | 1 | 1 |
| 2023 | 0 | 1 |
| 2024 | 1 | 0 |
| 2025 | 0 | 3 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Annular structure for an electronic flame off wand19 May 2026US 12,629,761 B2SanDisk Technologies LLC
- Work measurement system, education system, and quality control system17 Sep 2024US 12,092,525 B2Daikin Industries, Ltd.
- Gas powered tool and a method for retaining an isolating valve of a gas powered tool in an isolating state8 Nov 2022US 11,491,631 B2Oglesby & Butler Research & Development Limited
- Apparatus and method for brazing12 Jan 2021US 10,888,942 B2Lincoln Global.Inc.
- Apparatus and method for brazing18 Aug 2020US 10,744,582 B2Lincoln Global.Inc.
- Tool with supporting function13 Nov 2025US 2025/0345874 A1Roburn Company Ltd.
- Combustion tool with detachable heating unit4 Sep 2025US 2025/0276395 A1Roburn Company Ltd.
- Annular structure for an electronic flame off wand9 Jan 2025US 2025/0015040 A1Western Digital Technologies, Inc.
- Apparatus and method for brazing4 May 2023US 2023/0138128 A1Lincoln Global.Inc.
- Work measurement system, education system, and quality control system8 Sep 2022US 2022/0283035 A1Daikin Industries, Ltd.
Most cited
By later US patents
- Heat processing apparatus31US 4,552,124 ANakajima Dokosho Company Limited · 1985
- Soldering irons20US 4,119,088 AS. Mechele Limited · 1978
- Gas heating method and apparatus20US 4,133,301 A1979
- Soldering tool20US 6,874,671 B2Nakajima Copper Works, Inc. · 2005
- A soldering tool17US 4,785,793 AOglesby & Butler Technology Limited · 1988