C21D 11/00
Process control or regulation for heat treatments
C21D11/00 (Process control or regulation for heat treatments) appears on 525 US grants and 669 published applications in this corpus.
Search patents in C21D- Granted patents
- 525
- Published applications
- 669
- Assignees
- 386
- Inventors
- 1,832
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 6 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 6 | 0 |
| 1985 | 5 | 0 |
| 1986 | 7 | 0 |
| 1987 | 5 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 6 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 5 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 10 | 0 |
| 1998 | 5 | 0 |
| 1999 | 7 | 0 |
| 2000 | 3 | 0 |
| 2001 | 7 | 2 |
| 2002 | 2 | 3 |
| 2003 | 5 | 8 |
| 2004 | 8 | 14 |
| 2005 | 7 | 13 |
| 2006 | 5 | 17 |
| 2007 | 10 | 18 |
| 2008 | 8 | 18 |
| 2009 | 8 | 25 |
| 2010 | 10 | 35 |
| 2011 | 11 | 23 |
| 2012 | 14 | 22 |
| 2013 | 25 | 17 |
| 2014 | 15 | 29 |
| 2015 | 12 | 38 |
| 2016 | 22 | 25 |
| 2017 | 26 | 29 |
| 2018 | 22 | 44 |
| 2019 | 24 | 29 |
| 2020 | 28 | 43 |
| 2021 | 25 | 32 |
| 2022 | 37 | 50 |
| 2023 | 23 | 37 |
| 2024 | 27 | 37 |
| 2025 | 30 | 30 |
| 2026 | 18 | 31 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Housing of an induction hardening tool6 Oct 2026US 12,752,288 B2Aktiebolaget Skf
- Workpiece holding device6 Oct 2026US 12,753,453 B2Aktiebolaget Skf
- Dual-frequency power-supply apparatus, high-frequency heating apparatus, and high-frequency quenching apparatus11 Aug 2026US 12,706,545 B2Neturen Co., Ltd.
- Method and system of manufacturing coiled tubing4 Aug 2026US 12,698,542 B2Tenaris Coiled Tubes, LLC
- Thermal processing of closed shape workpieces28 Jul 2026US 12,692,568 B2Beijing E-Town Semiconductor Technology Co., Ltd.
- Temperature-control device1 Oct 2026US 2026/0297702 A1EBNER Industrieofenbau GmbH
- Heat treatment methods for multiphase superalloys24 Sep 2026US 2026/0286454 A1General Electric Company
- 1300-mpa-grade-or-higher cold-rolled steel sheet and manufacturing method therefor17 Sep 2026US 2026/0275440 A1Baoshan Iron & Steel Co., Ltd.
- Prediction Method for Hot Working Condition and Non-Transitory Computer Readable Medium17 Sep 2026US 2026/0278204 A1Proterial, Ltd.
- Compact steel plate continuous quenching machine13 Aug 2026US 2026/0234741 A1Northeastern University
Most cited
By later US patents
- Heat treatment with an autoregulating heater259US 4,623,401 AMetcal, Inc. · 1986
- Digital computer monitored and/or operated system or process which is structured for operation with an improved automatic programming process and system144US 4,215,406 AWestinghouse Electric Corp. · 1980
- Combined file and directory system for a process control digital computer system95US 4,215,407 AWestinghouse Electric Corp. · 1980
- Method and system for selectively softening hot stamped parts by induction heating94US 10,308,992 B2Ford Motor Company · 2019
- Methods for weld monitoring and laser heat treatment monitoring89US 6,329,635 B1The University of Chicago · 2001