C21D 9/60
With induction heating
Official title: with induction heating
C21D9/60 (With induction heating) appears on 141 US grants and 132 published applications in this corpus.
Search patents in C21D- Granted patents
- 141
- Published applications
- 132
- Assignees
- 116
- Inventors
- 423
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 7 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 5 | 1 |
| 2002 | 1 | 0 |
| 2003 | 2 | 3 |
| 2004 | 1 | 3 |
| 2005 | 1 | 2 |
| 2006 | 1 | 3 |
| 2007 | 1 | 3 |
| 2008 | 1 | 5 |
| 2009 | 4 | 6 |
| 2010 | 2 | 10 |
| 2011 | 1 | 4 |
| 2012 | 2 | 4 |
| 2013 | 4 | 4 |
| 2014 | 3 | 4 |
| 2015 | 3 | 7 |
| 2016 | 5 | 7 |
| 2017 | 1 | 8 |
| 2018 | 7 | 5 |
| 2019 | 7 | 8 |
| 2020 | 5 | 7 |
| 2021 | 3 | 7 |
| 2022 | 8 | 4 |
| 2023 | 5 | 7 |
| 2024 | 8 | 9 |
| 2025 | 6 | 2 |
| 2026 | 3 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Energy-efficient production of a ferritic hot-rolled strip in an integrated casting-rolling plant14 Jul 2026US 12,680,144 B2Primetals Technologies Austria GmbH
- Methods of cooling an electrically conductive sheet during transverse flux induction heat treatment19 May 2026US 12,635,041 B2Arconic Technologies LLC
- Method for producing a microalloyed steel, a microalloyed steel produced using the method, and a combined casting/rolling installation12 May 2026US 12,623,278 B2Primetals Technologies Austria GmbH
- Device and method for heat treatment of steels, including a wet cooling11 Nov 2025US 12,467,114 B2Fives Stein
- Transverse flux induction heating device21 Oct 2025US 12,452,966 B2Nippon Steel Corporation
- An annealing apparatus for a metal strip coating system17 Sep 2026US 2026/0275448 A1Danieli & C. Officine Meccaniche SpA
- Continuous annealing line, continuous annealing method, method of producing cold-rolled steel sheet, and method of producing coated or plated steel sheet30 Jul 2026US 2026/0218361 A1Jfe Steel Corporation
- Hot roll forming system for high strength component production23 Jul 2026US 2026/0208247 A1GM Global Technology Operations LLC
- Method for heating a steel intermediate strip when producing a flat steel strip23 Jul 2026US 2026/0210634 A1Primetals Technologies Austria GmbH
- Continuous annealing line, continuous annealing method, method of producing cold-rolled steel sheet, and method of producing coated or plated steel sheet12 Mar 2026US 2026/0071291 A1Jfe Steel Corporation
Most cited
By later US patents
- Coating system for glass adhesion retention46US 5,664,041 ADSM Desotech, Inc. · 1997
- Method of working metal, metal body obtained by the method and metal-containing ceramic body obtained by the method46US 7,559,221 B2Rinascimetalli Ltd. · 2009
- Multi-wire induction heating42US 4,788,394 ANV Bekaert SA · 1988
- Electromagnetic induction heating apparatus including a magnetic flux diverting assembly40US 4,795,872 ANippon Light Metal Company, Ltd. · 1989
- Induction type electrical wire preheater34US 4,791,260 AWST Power Electronics, Inc. · 1988