B23K 13/02
Seam welding
B23K13/02 (Seam welding) appears on 150 US grants and 114 published applications in this corpus.
Search patents in B23K- Granted patents
- 150
- Published applications
- 114
- Assignees
- 99
- Inventors
- 395
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 6 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 9 | 0 |
| 1999 | 7 | 0 |
| 2000 | 5 | 0 |
| 2001 | 6 | 0 |
| 2002 | 4 | 5 |
| 2003 | 2 | 1 |
| 2004 | 2 | 3 |
| 2005 | 2 | 3 |
| 2006 | 3 | 6 |
| 2007 | 1 | 2 |
| 2008 | 2 | 4 |
| 2009 | 1 | 4 |
| 2010 | 1 | 6 |
| 2011 | 2 | 1 |
| 2012 | 3 | 3 |
| 2013 | 3 | 4 |
| 2014 | 2 | 0 |
| 2015 | 3 | 8 |
| 2016 | 2 | 8 |
| 2017 | 1 | 4 |
| 2018 | 5 | 9 |
| 2019 | 8 | 8 |
| 2020 | 7 | 13 |
| 2021 | 2 | 8 |
| 2022 | 6 | 2 |
| 2023 | 6 | 3 |
| 2024 | 1 | 3 |
| 2025 | 4 | 2 |
| 2026 | 4 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Parallel robotics system and method of induction kinetic hybrid welding processes29 Sep 2026US 12,746,626 B2Spinduction Weld, Inc.
- Methods of using induction heating and moisture barriers to perform in-service pipeline maintenance16 Jun 2026US 12,654,251 B1Weldfit LLC
- Systems and methods for induction welding17 Feb 2026US 12,551,968 B2Wichita State University
- Manufacture of roll formed tubes20 Jan 2026US 12,528,108 B2Hydro Extruded Solutions AS
- Method of preparing a pipe-section16 Dec 2025US 12,498,057 B2Technip France
- Production method of electric resistance welded steel pipe and electric resistance welded steel pipe27 Aug 2026US 2026/0249378 A1Nippon Steel Corporation
- Impedance sheet, mandrel of electric-resistance welded pipe manufacturing device, and method for manufacturing electric-resistance welded pipe27 Aug 2026US 2026/0249380 A1Nippon Steel Corporation
- Mandrel equipped with impedance device, electric-resistance welded pipe manufacturing device, and method for manufacturing electric-resistance welded pipe6 Aug 2026US 2026/0225176 A1Nippon Steel Corporation
- Sulfur-resistant and corrosion-resistant low-carbon alloy-based coiled tubing and preparation method thereof28 May 2026US 2026/0145278 A1Shinda (Tangshan) Creative Oil & Gas Equipment Co., Ltd.
- System and method for metal forming and layering using inductive heating2 Oct 2025US 2025/0303491 A1Lockheed Martin Corporation
Most cited
By later US patents
- Method and device for joining oilfield tubulars127US 6,078,031 AShell Research Limited · 2000
- Power device for fusing plastic pipe joints123US 5,788,789 AGeorge Fischer Sloane, Inc. · 1998
- Joining a workpiece in a concealed joining seam117US 9,700,966 B2Fft Produktionssysteme GmbH & Co. KG · 2017
- Thermoplastic welding116US 5,313,034 AEdison Welding Institute, Inc. · 1994
- Seam-welded metal pipe and method of making the same without seam anneal115US 7,032,809 B1Steel Ventures, L.L.C. · 2006