B23K 9/02
Seam welding
Official title: Seam welding; Backing means; Inserts
B23K9/02 (Seam welding) appears on 1,376 US grants and 1,203 published applications in this corpus.
Search patents in B23K- Granted patents
- 1,376
- Published applications
- 1,203
- Assignees
- 722
- Inventors
- 3,234
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 30 | 0 |
| 1977 | 38 | 0 |
| 1978 | 26 | 0 |
| 1979 | 29 | 0 |
| 1980 | 26 | 0 |
| 1981 | 25 | 0 |
| 1982 | 28 | 0 |
| 1983 | 19 | 0 |
| 1984 | 17 | 0 |
| 1985 | 39 | 0 |
| 1986 | 38 | 0 |
| 1987 | 21 | 0 |
| 1988 | 21 | 0 |
| 1989 | 28 | 0 |
| 1990 | 18 | 0 |
| 1991 | 11 | 0 |
| 1992 | 21 | 0 |
| 1993 | 19 | 0 |
| 1994 | 13 | 0 |
| 1995 | 14 | 0 |
| 1996 | 16 | 0 |
| 1997 | 18 | 0 |
| 1998 | 13 | 0 |
| 1999 | 14 | 0 |
| 2000 | 27 | 0 |
| 2001 | 22 | 11 |
| 2002 | 18 | 18 |
| 2003 | 11 | 14 |
| 2004 | 15 | 26 |
| 2005 | 18 | 24 |
| 2006 | 17 | 21 |
| 2007 | 13 | 28 |
| 2008 | 9 | 35 |
| 2009 | 8 | 36 |
| 2010 | 16 | 45 |
| 2011 | 12 | 40 |
| 2012 | 20 | 31 |
| 2013 | 21 | 58 |
| 2014 | 32 | 77 |
| 2015 | 32 | 71 |
| 2016 | 48 | 66 |
| 2017 | 43 | 41 |
| 2018 | 34 | 65 |
| 2019 | 63 | 78 |
| 2020 | 56 | 80 |
| 2021 | 45 | 69 |
| 2022 | 58 | 78 |
| 2023 | 58 | 63 |
| 2024 | 45 | 56 |
| 2025 | 63 | 39 |
| 2026 | 30 | 33 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method and apparatus for improving the quality of a butt weld1 Sep 2026US 12,722,221 B2Unicon Incorporated
- Lined pipe and joints thereof4 Aug 2026US 12,698,850 B2
- Method for manufacturing additively-manufactured object21 Jul 2026US 12,686,068 B2Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
- Hybrid butt-lap joint, and method of production14 Jul 2026US 12,680,563 B2His Majesty the King In Right of Canada, the Minister of Natural Resources
- Electrode assembly for arc welding30 Jun 2026US 12,667,902 B2Lincoln Global.Inc.
- Hybrid butt-lap joint, and method of production8 Oct 2026US 2026/0309174 A1His Majesty the King In Right of Canada, AS Represented By the Minister of Natural Resources
- High-performance welding device for thick-wall electrogas upright welding based on liquid nitrogen rapid cooling assistance24 Sep 2026US 2026/0284802 A1Tianjin University
- Method for producing welded joint by gas-shielded arc welding of steel plate17 Sep 2026US 2026/0273644 A1Jfe Steel Corporation
- Welding method for bimetal composite pipes for acidic environment10 Sep 2026US 2026/0264158 A1Southwest Petroleum University
- Manufacturing method for arc-welded joint, arc-welded joint, and vehicle component27 Aug 2026US 2026/0249375 A1Nippon Steel Corporation
Most cited
By later US patents
- Method and apparatus for fabrication of three-dimensional metal articles by weld deposition150US 5,207,371 A1993
- Short circuit welder150US 6,051,810 ALincoln Global.Inc. · 2000
- Joining a workpiece in a concealed joining seam117US 9,700,966 B2Fft Produktionssysteme GmbH & Co. KG · 2017
- Quality control module for tandem arc welding99US 6,940,039 B2Lincoln Global.Inc. · 2005
- Method and apparatus for electric arc welding91US 6,160,241 ALincoln Global.Inc. · 2000