C21D 2251/04
Welded or brazed overlays
C21D2251/04 (Welded or brazed overlays) appears on 39 US grants and 54 published applications in this corpus.
Search patents in C21D- Granted patents
- 39
- Published applications
- 54
- Assignees
- 53
- Inventors
- 161
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 0 | 4 |
| 2010 | 0 | 0 |
| 2011 | 1 | 4 |
| 2012 | 1 | 4 |
| 2013 | 2 | 4 |
| 2014 | 2 | 2 |
| 2015 | 1 | 6 |
| 2016 | 3 | 3 |
| 2017 | 3 | 4 |
| 2018 | 1 | 3 |
| 2019 | 4 | 5 |
| 2020 | 7 | 1 |
| 2021 | 1 | 5 |
| 2022 | 3 | 1 |
| 2023 | 0 | 2 |
| 2024 | 1 | 0 |
| 2025 | 2 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Steel sheet, member, and method for producing them12 May 2026US 12,624,410 B2Jfe Steel Corporation
- 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.
- Steel sheet, member, and method for producing them13 May 2025US 12,297,515 B2Jfe Steel Corporation
- Method of manufacturing Martensitic steel and a Martensitic steel thereof3 Dec 2024US 12,157,925 B2ArcelorMittal
- Hot-forging die with conformal meshy structured cavity surface layer and preparation method thereof11 Oct 2022US 11,465,195 B2Chongqing Jiepin Technology Co., Ltd
- Method of manufacturing overlapped hot stamped component2 Jul 2026US 2026/0183820 A1Nippon Steel Corporation
- 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 2026/0008119 A1Jfe Steel Corporation
- Overlapped blank for hot stamping and overlapped hot stamped component21 Aug 2025US 2025/0262841 A1Nippon Steel Corporation
- Steel sheet, member, and method for producing them18 May 2023US 2023/0151451 A1Jfe Steel Corporation
- Steel sheet, member, and method for producing them27 Apr 2023US 2023/0129828 A1Jfe Steel Corporation
Most cited
By later US patents
- High-hardness hardfacing alloy powder32US 9,365,913 B2Daido Steel Co., Ltd. · 2016
- Process for imparting residual compressive stresses to steel machine components19US 5,879,480 AThe Timken Company · 1999
- Cylinder member and nickel-based facing alloys18US 5,958,332 AMan B&W Diesel A/S · 1999
- Surface treatment of austenitic Ni-Fe-Cr-based alloys for improved resistance to intergranular-corrosion and-cracking16US 6,344,097 B12002
- Method for manufacturing welded clad steel tube15US 5,855,699 ADaido Tokushuko Kabushiki Kaisha · 1999