B23K 13/00
Welding by high-frequency current heating
B23K13/00 (Welding by high-frequency current heating) appears on 413 US grants and 361 published applications in this corpus.
Search patents in B23K- Granted patents
- 413
- Published applications
- 361
- Assignees
- 250
- Inventors
- 981
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 4 | 0 |
| 1979 | 4 | 0 |
| 1980 | 9 | 0 |
| 1981 | 3 | 0 |
| 1982 | 7 | 0 |
| 1983 | 1 | 0 |
| 1984 | 7 | 0 |
| 1985 | 9 | 0 |
| 1986 | 6 | 0 |
| 1987 | 9 | 0 |
| 1988 | 4 | 0 |
| 1989 | 6 | 0 |
| 1990 | 6 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 8 | 0 |
| 1994 | 10 | 0 |
| 1995 | 2 | 0 |
| 1996 | 6 | 0 |
| 1997 | 1 | 0 |
| 1998 | 13 | 0 |
| 1999 | 12 | 0 |
| 2000 | 12 | 0 |
| 2001 | 13 | 1 |
| 2002 | 10 | 11 |
| 2003 | 9 | 8 |
| 2004 | 8 | 12 |
| 2005 | 8 | 11 |
| 2006 | 7 | 16 |
| 2007 | 8 | 8 |
| 2008 | 6 | 8 |
| 2009 | 5 | 15 |
| 2010 | 3 | 20 |
| 2011 | 5 | 18 |
| 2012 | 6 | 11 |
| 2013 | 8 | 12 |
| 2014 | 4 | 8 |
| 2015 | 16 | 17 |
| 2016 | 5 | 18 |
| 2017 | 14 | 16 |
| 2018 | 10 | 21 |
| 2019 | 21 | 23 |
| 2020 | 15 | 27 |
| 2021 | 18 | 18 |
| 2022 | 17 | 13 |
| 2023 | 17 | 14 |
| 2024 | 12 | 10 |
| 2025 | 10 | 13 |
| 2026 | 9 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B23K 13/01Welding by high-frequency current heating: by induction heating304
- B23K 13/04Welding by high-frequency current heating: by conduction heating38
- B23K 13/08Electric supply or control circuits therefor38
- B23K 13/06Welding by high-frequency current heating: characterised by the shielding of the welding15
Recent patents
- Parallel robotics system and method of induction kinetic hybrid welding processes29 Sep 2026US 12,746,626 B2Spinduction Weld, Inc.
- Welded rail29 Sep 2026US 12,747,483 B2Nippon Steel Corporation
- System for heating components for curing and bonding multi-component structures30 Jun 2026US 12,667,904 B2Temper IP, LLC
- Methods of using induction heating and moisture barriers to perform in-service pipeline maintenance16 Jun 2026US 12,654,251 B1Weldfit LLC
- Induction welding heat shield assembly with multiple heat shields with aligned recesses for induction welding path9 Jun 2026US 12,649,198 B2Rohr, Inc.
- System and method for linear solid state welding1 Oct 2026US 2026/0295739 A1
- 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
- Method for joining thin-walled workpieces30 Jul 2026US 2026/0216813 A1
Most cited
By later US patents
- Method and device for joining oilfield tubulars127US 6,078,031 AShell Research Limited · 2000
- Induction heater and apparatus for use with stud mounted hot melt fasteners125US 4,355,222 AThe Boeing Company · 1982
- 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