C21D 1/667
For spray quenching
Official title: for spray quenching
C21D1/667 (For spray quenching) appears on 345 US grants and 347 published applications in this corpus.
Search patents in C21D- Granted patents
- 345
- Published applications
- 347
- Assignees
- 248
- Inventors
- 987
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 7 | 0 |
| 1978 | 4 | 0 |
| 1979 | 5 | 0 |
| 1980 | 6 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 6 | 0 |
| 1984 | 6 | 0 |
| 1985 | 5 | 0 |
| 1986 | 6 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 6 | 0 |
| 1995 | 7 | 0 |
| 1996 | 4 | 0 |
| 1997 | 6 | 0 |
| 1998 | 5 | 0 |
| 1999 | 7 | 0 |
| 2000 | 4 | 0 |
| 2001 | 8 | 4 |
| 2002 | 9 | 7 |
| 2003 | 6 | 2 |
| 2004 | 4 | 3 |
| 2005 | 1 | 7 |
| 2006 | 1 | 8 |
| 2007 | 2 | 10 |
| 2008 | 6 | 3 |
| 2009 | 5 | 6 |
| 2010 | 7 | 10 |
| 2011 | 1 | 14 |
| 2012 | 2 | 10 |
| 2013 | 9 | 8 |
| 2014 | 5 | 14 |
| 2015 | 14 | 16 |
| 2016 | 11 | 18 |
| 2017 | 11 | 25 |
| 2018 | 12 | 30 |
| 2019 | 19 | 26 |
| 2020 | 16 | 31 |
| 2021 | 23 | 16 |
| 2022 | 23 | 17 |
| 2023 | 9 | 15 |
| 2024 | 10 | 15 |
| 2025 | 11 | 15 |
| 2026 | 9 | 17 |
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
- Thermal treatment of component30 Jun 2026US 12,668,851 B2Schwartz GmbH
- High strength steel for structure with excellent corrosion resistance and manufacturing method for same16 Jun 2026US 12,655,491 B2Posco
- 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
- Method and device for rapidly cooling a metal strip and continuous production line for metal strips1 Oct 2026US 2026/0297700 A1Fives Stein
- Induction hardening treatment method and application for large bearing ring3 Sep 2026US 2026/0258521 A1
- Stainless steel clad plate with excellent shape and preparation method thereof20 Aug 2026US 2026/0241428 A1Institute of Research of Iron and Steel, Jiangsu Province/Sha-Steel, Co. Ltd (Cn)
- Compact steel plate continuous quenching machine13 Aug 2026US 2026/0234741 A1Northeastern University
- 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
Most cited
By later US patents
- Process for intermediately quenching light-metal castings coming from a solution heat treatment furnance45US 5,788,784 AMercedes-Benz AG · 1998
- Method for the production of improved railway rails by accelerated cooling in line with the production rolling mill35US 4,486,248 AThe Algoma Steel Corporation, Limited · 1984
- Method and device for temper-hardening flat metal products31US 6,153,026 A2000
- Process and apparatus for applying and removing liquid coolant to control temperature of continuously moving metal strip28US 5,701,775 AAlcan International Limited · 1997
- Selectively heat treated side intrusion beams and method for making the same24US 5,868,456 ATrim Trends, Inc. · 1999