C21D 1/10
By electric induction
Official title: by electric induction
C21D1/10 (By electric induction) appears on 328 US grants and 340 published applications in this corpus.
Search patents in C21D- Granted patents
- 328
- Published applications
- 340
- Assignees
- 200
- Inventors
- 806
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 5 | 0 |
| 1988 | 5 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 5 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 8 | 0 |
| 2000 | 9 | 0 |
| 2001 | 10 | 1 |
| 2002 | 11 | 9 |
| 2003 | 7 | 5 |
| 2004 | 7 | 16 |
| 2005 | 7 | 14 |
| 2006 | 9 | 13 |
| 2007 | 3 | 10 |
| 2008 | 4 | 12 |
| 2009 | 4 | 18 |
| 2010 | 8 | 26 |
| 2011 | 8 | 20 |
| 2012 | 11 | 20 |
| 2013 | 15 | 16 |
| 2014 | 14 | 12 |
| 2015 | 14 | 16 |
| 2016 | 13 | 16 |
| 2017 | 10 | 9 |
| 2018 | 14 | 17 |
| 2019 | 18 | 27 |
| 2020 | 16 | 11 |
| 2021 | 10 | 5 |
| 2022 | 10 | 7 |
| 2023 | 6 | 12 |
| 2024 | 3 | 11 |
| 2025 | 8 | 12 |
| 2026 | 3 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Housing of an induction hardening tool6 Oct 2026US 12,752,288 B2Aktiebolaget Skf
- Methods for producing locally hardened components30 Jun 2026US 12,668,850 B1Southwest Technology and Engineering Research Institute
- Induction hardening system7 Apr 2026US 12,595,524 B2Aktiebolaget Skf
- Processing method7 Oct 2025US 12,434,289 B2Toyota Jidosha Kabushiki Kaisha
- Tool with protruding structure2 Sep 2025US 12,403,578 B2Hilti Aktiengesellschaft
- Magnetically enhanced induction heat treating application27 Aug 2026US 2026/0250796 A1Ajax Tocco Magnethermic Corporation
- Railway axle30 Jul 2026US 2026/0218349 A1Nippon Steel Corporation
- Method for heating a steel intermediate strip when producing a flat steel strip23 Jul 2026US 2026/0210634 A1Primetals Technologies Austria GmbH
- Method for producing a nitrided part of an aircraft turbomachine9 Jul 2026US 2026/0193767 A1Safran
- Methods for producing locally hardened components2 Jul 2026US 2026/0185175 A1Southwest Technology and Engineering Research Institute
Most cited
By later US patents
- Induction heating system with a flexible coil56US 6,229,126 B1Illinois Tool Works Inc. · 2001
- Method and apparatus for hardening cam lobes on a camshaft46US 4,893,789 ATocco, Inc. · 1990
- Method of baking treatment of steel product parts37US 6,855,217 B2Aoyama Seisakusho Co., Ltd. · 2005
- Induction processing with the aid of a conductive shield27US 6,576,877 B2The Boeing Company · 2003
- Method for heat treating by induced current25US 4,021,274 ARussell, Birdsall & Ward, Inc. · 1977