C21D 8/0242
Flattening
Official title: {Flattening; Dressing; Flexing}
C21D8/0242 (Flattening) appears on 82 US grants and 137 published applications in this corpus.
Search patents in C21D- Granted patents
- 82
- Published applications
- 137
- Assignees
- 50
- Inventors
- 371
- Latest grant
- 31 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 3 |
| 2004 | 2 | 1 |
| 2005 | 0 | 2 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 3 |
| 2009 | 1 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 3 |
| 2012 | 2 | 2 |
| 2013 | 1 | 3 |
| 2014 | 1 | 1 |
| 2015 | 2 | 3 |
| 2016 | 0 | 1 |
| 2017 | 2 | 1 |
| 2018 | 3 | 0 |
| 2019 | 1 | 3 |
| 2020 | 1 | 6 |
| 2021 | 1 | 4 |
| 2022 | 4 | 14 |
| 2023 | 5 | 26 |
| 2024 | 11 | 23 |
| 2025 | 25 | 20 |
| 2026 | 4 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- High-strength hot-rolled steel sheet and method for manufacturing the same31 Mar 2026US 12,590,344 B2Jfe Steel Corporation
- Method for producing hardened steel components with a conditioned zinc anti-corrosive layer31 Mar 2026US 12,590,346 B2voestalpine Stahl GmbH
- Steel sheet and method for producing same31 Mar 2026US 12,590,348 B2Nippon Steel Corporation
- Surface modification of a zinc-based metal coating in a hot-dip coating process10 Feb 2026US 12,545,984 B2ThyssenKrupp Steel Europe AG
- Method to produce void-free ferrous and non-ferrous aerospace structural castings23 Dec 2025US 12,503,773 B2Spirit AeroSystems, Inc.
- A cold rolled martensitic steel and a method of martensitic steel thereof8 Oct 2026US 2026/0308706 A1
- Galvanized steel sheet, member, and method for manufacturing the same24 Sep 2026US 2026/0286493 A1Jfe Steel Corporation
- Automotive structural steel having a yield strength of equal to or greater than 1000 mpa and manufacturing method therefor17 Sep 2026US 2026/0275438 A1Baoshan Iron & Steel Co., Ltd.
- Steel sheet and high strength press hardened steel part having excellent bending anisotropy and method of manufacturing the same20 Aug 2026US 2026/0242906 A1
- Molded sheet-metal part with improved hardness curve16 Jul 2026US 2026/0201491 A1ThyssenKrupp Steel Europe AG
Most cited
By later US patents
- Apparatus for continuously producing a high strength dual-phase steel strip or sheet18US 4,296,919 ANippon Steel Corporation · 1981
- Method and apparatus for rolling strip or plate14US 5,727,412 ATippins Incorporated · 1998
- Continuous process for producing a shaped steel member14US 7,503,116 B2Noble Advanced Technologies, Inc. · 2009
- Process for making railroad car truck wear plates13US 5,518,557 AStandard Car Truck Company · 1996
- Cold-rolled steel sheet having excellent strain aging hardening properties and method for producing the same12US 6,695,932 B2Jfe Steel Corporation · 2004