B23K 20/1285
Portable friction welding machines
Official title: {Portable friction welding machines}
B23K20/1285 (Portable friction welding machines) appears on 37 US grants and 36 published applications in this corpus.
Search patents in B23K- Granted patents
- 37
- Published applications
- 36
- Assignees
- 22
- Inventors
- 60
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 2 |
| 2004 | 2 | 1 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 2 |
| 2013 | 1 | 2 |
| 2014 | 3 | 9 |
| 2015 | 1 | 0 |
| 2016 | 5 | 2 |
| 2017 | 3 | 1 |
| 2018 | 2 | 2 |
| 2019 | 0 | 2 |
| 2020 | 1 | 1 |
| 2021 | 2 | 2 |
| 2022 | 1 | 3 |
| 2023 | 2 | 1 |
| 2024 | 1 | 1 |
| 2025 | 1 | 2 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Automated portable friction welding system and method of operation24 Mar 2026US 12,583,055 B2Fusematic Corporation
- Buoyancy provisions for facilitating underwater friction welding15 Apr 2025US 12,275,096 B2Fusematic Corporation
- Multi-position clamp for friction welding operations2 Jan 2024US 11,858,062 B2Fusematic Corporation
- Plurality of studs being friction welded to an exterior surface of a curved structure having a block patch and a steel patch between the exterior surface and the studs14 Nov 2023US 11,815,192 B2Forge Tech, Inc.
- Pipe that is friction forge bonded to a ladder support through a stud and a bracket28 Feb 2023US 11,592,117 B2Forge Tech, Inc.
- Plurality of Studs being Friction Welded to an Exterior Surface of a Curved Structure having a Block Patch and a Member between the Exterior Surface and the Studs15 May 2025US 2025/0153269 A1
- Plurality of Studs being Friction Welded to an Exterior Surface of a Storage Tank having a Block Patch and a Member between the Exterior Surface and the Studs30 Jan 2025US 2025/0035226 A1Forge Tech, Inc.
- An electric portable friction welding system and enhanced method of operation4 Jan 2024US 2024/0001477 A1Fusematic Corporation
- Pipe that is Friction Forge Bonded to a Ladder Support through a Stud and a Bracket6 Jul 2023US 2023/0213107 A1Forge Tech, Inc.
- Pipe that is Friction Forge Bonded to a Ladder Support through a Stud and a Bracket30 Jun 2022US 2022/0205550 A1Forge Tech, Inc.
Most cited
By later US patents
- Portable frictional welding device24US 4,122,990 AAgency of Industrial Science and Technology · 1978
- Friction welding apparatus16US 5,558,265 AThe Safe Seal Company, Inc. · 1996
- Friction welding fusion enhancer apparatus13US 5,785,805 A1998
- Friction welding12US 4,735,353 AThomson Welding & Inspection Ltd. · 1988
- Automated fusion bonding apparatus11US 5,699,952 AThe Fusion Bonding Corporation · 1997