C21D 8/0447
Characterised by the heat treatment
Official title: {characterised by the heat treatment}
C21D8/0447 (Characterised by the heat treatment) appears on 537 US grants and 650 published applications in this corpus.
Search patents in C21D- Granted patents
- 537
- Published applications
- 650
- Assignees
- 126
- Inventors
- 1,291
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 5 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 6 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 1 | 0 |
| 1994 | 6 | 0 |
| 1995 | 4 | 0 |
| 1996 | 8 | 0 |
| 1997 | 3 | 0 |
| 1998 | 9 | 0 |
| 1999 | 4 | 0 |
| 2000 | 5 | 0 |
| 2001 | 9 | 3 |
| 2002 | 7 | 4 |
| 2003 | 7 | 7 |
| 2004 | 8 | 20 |
| 2005 | 3 | 1 |
| 2006 | 4 | 5 |
| 2007 | 2 | 2 |
| 2008 | 1 | 10 |
| 2009 | 3 | 15 |
| 2010 | 5 | 19 |
| 2011 | 9 | 25 |
| 2012 | 13 | 16 |
| 2013 | 5 | 27 |
| 2014 | 12 | 50 |
| 2015 | 23 | 39 |
| 2016 | 16 | 36 |
| 2017 | 28 | 37 |
| 2018 | 30 | 33 |
| 2019 | 31 | 39 |
| 2020 | 26 | 47 |
| 2021 | 36 | 52 |
| 2022 | 37 | 54 |
| 2023 | 32 | 34 |
| 2024 | 42 | 29 |
| 2025 | 34 | 24 |
| 2026 | 18 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Steel sheet1 Sep 2026US 12,723,295 B2Nippon Steel Corporation
- Steel aerosol monobloc11 Aug 2026US 12,703,901 B2ArcelorMittal
- Ultrahigh strength cold-rolled steel sheet and manufacturing method thereof16 Jun 2026US 12,655,492 B2Posco
- Steel sheet and press-formed article16 Jun 2026US 12,655,511 B2Nippon Steel Corporation
- Al—Fe-alloy plated steel sheet for hot forming, having excellent TWB welding characteristics, hot forming member, and manufacturing methods therefor2 Jun 2026US 12,644,170 B2Posco
- Hot stamping component and manufacturing method therefor27 Aug 2026US 2026/0249342 A1Hyundai Steel Company
- Steel sheet, member, and part, and methods of producing same27 Aug 2026US 2026/0250813 A1Jfe Steel Corporation
- Steel sheet, member, and part, and methods of producing same27 Aug 2026US 2026/0250814 A1Jfe Steel Corporation
- Steel sheet for hot-stamping, method for manufacturing steel sheet for hot-stamping, and hot-stamped formed body27 Aug 2026US 2026/0250815 A1Nippon Steel Corporation
- High-tensile steel having improved hydrogen embrittlement resistance13 Aug 2026US 2026/0233274 A1ThyssenKrupp Steel Europe AG
Most cited
By later US patents
- Battery can, sheet for forming battery can, and method for manufacturing sheet27US 5,576,113 AKatayama Special Industries, Ltd. · 1996
- Method for producing cold rolled steel sheets having a noticeably excellent formability24US 4,368,084 AKawasaki Steel Corporation · 1983
- Manufacturing process for austenitic high manganese steel having superior formability, strengths and weldability24US 5,431,753 APohang Iron & Steel Co., Ltd. · 1995
- Cold rolled steel sheet having excellent workability and method thereof20US 3,988,173 ANippon Steel Corporation · 1976
- High strength galvanized steel sheet having excellent formability, weldability, and fatigue properties and method for manufacturing the same20US 8,828,557 B2Jfe Steel Corporation · 2014