B23K 20/1275
Involving metallurgical change
Official title: {involving metallurgical change}
B23K20/1275 (Involving metallurgical change) appears on 66 US grants and 97 published applications in this corpus.
Search patents in B23K- Granted patents
- 66
- Published applications
- 97
- Assignees
- 63
- Inventors
- 207
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2001 | 3 | 0 |
| 2002 | 1 | 2 |
| 2003 | 2 | 4 |
| 2004 | 2 | 9 |
| 2005 | 5 | 3 |
| 2006 | 4 | 8 |
| 2007 | 2 | 5 |
| 2008 | 3 | 4 |
| 2009 | 4 | 2 |
| 2010 | 1 | 4 |
| 2011 | 2 | 7 |
| 2012 | 2 | 7 |
| 2013 | 3 | 4 |
| 2014 | 8 | 6 |
| 2015 | 3 | 5 |
| 2016 | 3 | 3 |
| 2017 | 3 | 6 |
| 2018 | 3 | 3 |
| 2019 | 3 | 5 |
| 2020 | 0 | 2 |
| 2021 | 3 | 2 |
| 2022 | 1 | 1 |
| 2023 | 1 | 1 |
| 2024 | 0 | 1 |
| 2025 | 3 | 1 |
| 2026 | 1 | 2 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Method for friction stir processing for the end surface of age-hardening aluminum alloy plates16 Jun 2026US 12,654,253 B2Jimei University
- Corrosion and wear resistant overlay, method for forming corrosion and wear resistant overlay, and corrosion and wear resistant valve23 Dec 2025US 12,502,727 B2Hitachi-GE Nuclear Energy, Ltd.
- Shape processes, feedstock materials, conductive materials and/or assemblies2 Sep 2025US 12,403,516 B2Battelle Memorial Institute
- Electrical steel strip friction stir welding method and method of producing electrical steel strip24 Jun 2025US 12,337,408 B2Jfe Steel Corporation
- Method for modifying surface grain structure of the material and apparatus thereof10 Jan 2023US 11,549,157 B2Shiv Nadar University
- Regulation layer for dissimilar metal friction welding interface and aluminum-steel friction welding method16 Jul 2026US 2026/0200016 A1Nanchang Hangkong University
- Electrical steel strip friction stir welding method, method of producing electrical steel strip, friction stir welding device, and electrical steel strip production device8 Jan 2026US 2026/0008118 A1Jfe Steel Corporation
- Method for friction stir processing for the end surface of age-hardening aluminum alloy plates15 May 2025US 2025/0153268 A1Jimei University
- Electrical steel strip friction stir welding method and method of producing electrical steel strip26 Dec 2024US 2024/0424598 A1Jfe Steel Corporation
- Friction stir processing for corrosion resistance10 Aug 2023US 2023/0250524 A1Lam Research Corporation
Most cited
By later US patents
- Apparatus and method for forming weld joints having compressive residual stress patterns135US 6,926,970 B2Lambda Research, Inc. · 2005
- Friction stir conduction controller74US 6,168,066 ALockheed Martin Corporation · 2001
- Friction plug welding65US 6,213,379 B1Lockheed Martin Corporation · 2001
- Friction stir fabrication48US 8,893,954 B2Aeroprobe Corporation · 2014
- System for continuous feeding of filler material for friction stir welding, processing and fabrication46US 8,875,976 B2Aeroprobe Corporation · 2014