B23K 9/0213
Narrow gap welding
Official title: {Narrow gap welding}
B23K9/0213 (Narrow gap welding) appears on 108 US grants and 88 published applications in this corpus.
Search patents in B23K- Granted patents
- 108
- Published applications
- 88
- Assignees
- 67
- Inventors
- 308
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 5 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 8 | 0 |
| 2001 | 7 | 2 |
| 2002 | 2 | 2 |
| 2003 | 1 | 2 |
| 2004 | 1 | 3 |
| 2005 | 1 | 3 |
| 2006 | 3 | 4 |
| 2007 | 2 | 3 |
| 2008 | 2 | 4 |
| 2009 | 1 | 1 |
| 2010 | 0 | 7 |
| 2011 | 0 | 4 |
| 2012 | 2 | 5 |
| 2013 | 3 | 4 |
| 2014 | 3 | 7 |
| 2015 | 0 | 5 |
| 2016 | 4 | 5 |
| 2017 | 3 | 1 |
| 2018 | 2 | 4 |
| 2019 | 7 | 4 |
| 2020 | 2 | 1 |
| 2021 | 6 | 2 |
| 2022 | 0 | 3 |
| 2023 | 4 | 4 |
| 2024 | 1 | 4 |
| 2025 | 4 | 3 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electrode assembly for arc welding30 Jun 2026US 12,667,902 B2Lincoln Global.Inc.
- Welding apparatus and method9 Dec 2025US 12,491,573 B2Mitsubishi Heavy Industries, Ltd.
- High-heat-input combined welding method for thick-walled high-strength steel14 Oct 2025US 12,440,927 B1Tianjin University
- Narrow gap laser-TIG arc hybrid welding apparatus and method27 May 2025US 12,311,463 B2Harbin Welding Institute Limited Company
- Rail welding method and device20 May 2025US 12,304,011 B2Dezhou University
- Method for producing welded joint by gas-shielded arc welding of steel plate17 Sep 2026US 2026/0273644 A1Jfe Steel Corporation
- Forced forming apparatus for a plurality of welds in narrow space26 Jun 2025US 2025/0205800 A1China Construction Science and Industry Corporation Ltd.
- Rapid electro-gas welding method with swing arc, and welding torch therewith and application thereof12 Jun 2025US 2025/0187097 A1Institute of Shanghai Special Equipment Supervision and Inspection Technology Research
- Narrow gap laser-tig arc hybrid welding apparatus and method23 Jan 2025US 2025/0025960 A1Harbin Welding Institute Limited Company
- Welding device for suppressing welding hot cracks, and welding system26 Sep 2024US 2024/0316681 A1
Most cited
By later US patents
- Method and system for welding railroad rails64US 6,278,074 B1Lincoln Global.Inc. · 2001
- Apparatus for welding with preheated filler material55US 5,958,261 AGeneral Electric Company · 1999
- Heat treatment for weld beads46US 6,191,379 B1General Electric Company · 2001
- Method for repairing a steam turbine or generator rotor40US 4,633,554 AWestinghouse Electric Corp. · 1987
- Narrow gap arc welding process and apparatus therefor29US 4,891,493 AMitsubishi Jukogyo Kabushiki Kaisha · 1990