B23K 20/12
The heat being generated by friction
Official title: the heat being generated by friction; Friction welding
B23K20/12 (The heat being generated by friction) appears on 2,076 US grants and 2,460 published applications in this corpus.
Search patents in B23K- Granted patents
- 2,076
- Published applications
- 2,460
- Assignees
- 822
- Inventors
- 3,976
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 9 | 0 |
| 1978 | 10 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 5 | 0 |
| 1982 | 6 | 0 |
| 1983 | 5 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 5 | 0 |
| 1987 | 6 | 0 |
| 1988 | 6 | 0 |
| 1989 | 7 | 0 |
| 1990 | 5 | 0 |
| 1991 | 11 | 0 |
| 1992 | 11 | 0 |
| 1993 | 17 | 0 |
| 1994 | 8 | 0 |
| 1995 | 7 | 0 |
| 1996 | 12 | 0 |
| 1997 | 11 | 0 |
| 1998 | 18 | 0 |
| 1999 | 19 | 0 |
| 2000 | 34 | 0 |
| 2001 | 52 | 26 |
| 2002 | 37 | 73 |
| 2003 | 60 | 64 |
| 2004 | 65 | 88 |
| 2005 | 41 | 75 |
| 2006 | 53 | 107 |
| 2007 | 34 | 87 |
| 2008 | 50 | 80 |
| 2009 | 37 | 94 |
| 2010 | 84 | 97 |
| 2011 | 77 | 88 |
| 2012 | 65 | 90 |
| 2013 | 67 | 87 |
| 2014 | 77 | 142 |
| 2015 | 82 | 109 |
| 2016 | 85 | 119 |
| 2017 | 82 | 132 |
| 2018 | 106 | 136 |
| 2019 | 91 | 106 |
| 2020 | 99 | 119 |
| 2021 | 93 | 114 |
| 2022 | 99 | 100 |
| 2023 | 75 | 74 |
| 2024 | 81 | 103 |
| 2025 | 98 | 77 |
| 2026 | 55 | 73 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Pressing device for fixing workpiece onto worktable6 Oct 2026US 12,752,367 B2ABB Schweiz AG
- Tank, in particular for a liquid hydrogen reservoir, provided with at least one dome fixed by way of an outer welded joint6 Oct 2026US 12,753,882 B2Airbus Operations GmbH
- Solid-state joining method, solid-state joined joint, solid-state joined structure, and solid-state joining device29 Sep 2026US 12,746,616 B2Osaka University
- Friction stir tool control method and friction stir device22 Sep 2026US 12,741,335 B2Kawasaki Jukogyo Kabushiki Kaisha
- Dissimilar material solid phase bonding method, and dissimilar material solid phase bonded structure15 Sep 2026US 12,734,603 B2The University of Osaka
- Friction stir welded joint1 Oct 2026US 2026/0295715 A1Jfe Steel Corporation
- Friction joining device and friction joining method1 Oct 2026US 2026/0295716 A1Citizen Machinery Co., Ltd.
- Welded body, method for friction stir spot welding, and device for friction stir spot welding1 Oct 2026US 2026/0295717 A1Kawasaki Jukogyo Kabushiki Kaisha
- Ultrasonic Assisted Additive Friction Stir Deposition24 Sep 2026US 2026/0284774 A1University of Kentucky Research Foundation
- Tooling for additive friction stir deposition24 Sep 2026US 2026/0284775 A1University of Kentucky Research Foundation
Most cited
By later US patents
- Friction welding329US 5,460,317 AThe Welding Institute · 1995
- Method and apparatus for in-process sensing of manufacturing quality163US 6,857,553 B1The United States of America as represented by the United States Department of Energy · 2005
- Friction stir welding160US 5,794,835 AThe Boeing Company · 1998
- Friction stir welding tool for welding variable thickness workpieces152US 5,718,366 AThe Boeing Company · 1998
- Friction stir welding152US 5,813,592 AThe Welding Institute · 1998