C21D 8/0231
Warm rolling
Official title: {Warm rolling}
C21D8/0231 (Warm rolling) appears on 65 US grants and 70 published applications in this corpus.
Search patents in C21D- Granted patents
- 65
- Published applications
- 70
- Assignees
- 46
- Inventors
- 215
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 3 |
| 2003 | 3 | 1 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 2 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 1 |
| 2013 | 1 | 1 |
| 2014 | 0 | 1 |
| 2015 | 1 | 2 |
| 2016 | 0 | 5 |
| 2017 | 0 | 2 |
| 2018 | 3 | 5 |
| 2019 | 2 | 10 |
| 2020 | 4 | 4 |
| 2021 | 4 | 8 |
| 2022 | 6 | 7 |
| 2023 | 5 | 7 |
| 2024 | 4 | 2 |
| 2025 | 6 | 2 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Strong and ductile medium manganese steel and method of making12 May 2026US 12,624,429 B2The University of Hong Kong
- Coated metal part obtained by deformation of a coated metal sheet21 Apr 2026US 12,606,898 B2ArcelorMittal
- Cold-rolled steel plate for hot forming, having excellent corrosion-resistance and spot-weldability, hot-formed member, and method for manufacturing same11 Nov 2025US 12,467,111 B2Posco
- Steel sheet and method for manufacturing same30 Sep 2025US 12,428,689 B2Nippon Steel Corporation
- Ultra-thick steel excellent in brittle crack arrestability and manufacturing method therefor24 Jun 2025US 12,338,515 B2Posco
- Cold-rolled steel plate for hot forming, having excellent corrosion-resistance and spot-weldability, hot-formed member, and method for manufacturing same12 Feb 2026US 2026/0043104 A1Posco
- Method for manufacturing a metal sheet with a znal coating and with optimized wiping, corresponding metal sheet, part and vehicle22 Jan 2026US 2026/0022444 A1ArcelorMittal
- Ultra-large linear energy welding steel and preparation method therefor2 Oct 2025US 2025/0305077 A1Institute of Research of Iron and Steel, Jiangsu Province/Sha-Steel, Co. Ltd (Cn)
- Steel sheet and method for manufacturing steel sheet8 May 2025US 2025/0146095 A1Nippon Steel Corporation
- Cold-rolled steel plate for hot forming, having excellent corrosion-resistance and spot-weldability, hot-formed member, and method for manufacturing same12 Sep 2024US 2024/0301527 A1Posco
Most cited
By later US patents
- Process and plant for obtaining steel strip coils having cold-rolled characteristics and directly obtained in a hot-rolling line32US 5,329,688 AHoogovens Groep B.V. · 1994
- High tensile steel having excellent fatigue strength at its weld and weldability and process for producing the same14US 5,634,988 ANippon Steel Corporation · 1997
- Apparatus and method for the manufacture of hot-rolled steel13US 5,303,766 AHoogovens Groep B.V. · 1994
- Method of producing aluminum coated steel11US 3,959,030 ASumitomo Metal Industries, Ltd. · 1976
- Method and an apparatus for the manufacture of a steel sheet10US 4,016,740 ANippon Steel Corporation · 1977