C21D 1/63
For bath quenching
Official title: for bath quenching
C21D1/63 (For bath quenching) appears on 165 US grants and 159 published applications in this corpus.
Search patents in C21D- Granted patents
- 165
- Published applications
- 159
- Assignees
- 144
- Inventors
- 427
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 5 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 5 | 0 |
| 2001 | 1 | 4 |
| 2002 | 5 | 4 |
| 2003 | 3 | 2 |
| 2004 | 2 | 3 |
| 2005 | 0 | 2 |
| 2006 | 2 | 2 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 2 | 4 |
| 2010 | 1 | 6 |
| 2011 | 2 | 6 |
| 2012 | 3 | 9 |
| 2013 | 5 | 2 |
| 2014 | 6 | 8 |
| 2015 | 4 | 11 |
| 2016 | 7 | 9 |
| 2017 | 8 | 8 |
| 2018 | 5 | 3 |
| 2019 | 10 | 10 |
| 2020 | 8 | 12 |
| 2021 | 7 | 7 |
| 2022 | 6 | 8 |
| 2023 | 2 | 4 |
| 2024 | 4 | 11 |
| 2025 | 8 | 14 |
| 2026 | 3 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Steel sheet, member, and methods for producing the same26 May 2026US 12,637,730 B2Jfe Steel Corporation
- Cooling water temperature control method and cooling water temperature control device for steel sheet12 May 2026US 12,624,414 B2Jfe Steel Corporation
- Track part and method for producing a track part24 Mar 2026US 12,584,184 B2voestalpine Schienen GmbH
- Firmware-based out-of-order command scheduler23 Dec 2025US 12,503,741 B2BAE Systems Information and Electronic Systems Integration Inc.
- Device for cooling a steel strip11 Nov 2025US 12,465,966 B2ArcelorMittal
- Compact steel plate continuous quenching machine13 Aug 2026US 2026/0234741 A1Northeastern University
- Quenching apparatus30 Jul 2026US 2026/0218324 A1Aisin Corporation
- Quenching apparatus30 Jul 2026US 2026/0218327 A1Aisin Corporation
- Vacuum carburizing furnace and vacuum carburizing treatment method21 May 2026US 2026/0139353 A1Dowa Thermotech Co., Ltd.
- Metal-strip warped-shape prediction method, metal-strip warped-shape control method, metal-strip manufacturing method, warped-shape prediction model generation method, and metal-strip warped-shape control device2 Apr 2026US 2026/0092339 A1Jfe Steel Corporation
Most cited
By later US patents
- Steel pipe hardening apparatus37US 4,376,528 AKawasaki Steel Corporation · 1983
- Process for the heat treatment of steel20US 4,082,577 AFried. Krupp Huttenwerke AG · 1978
- Method of heat treating metal with liquid coolant containing dissolved gas14US 5,681,407 AAluminum Company of America · 1997
- Method for heat treating and quenching complex metal components using salt baths13US 4,789,410 AUnited Technologies Corporation · 1988
- Spray quenching of metal with liquid coolant containing dissolved gas13US 5,820,705 AAluminum Company of America · 1998