C21D 8/04
To produce plates or strips for drawing
Official title: to produce plates or strips for drawing, e.g. for deep-drawing
C21D8/04 (To produce plates or strips for drawing) appears on 778 US grants and 945 published applications in this corpus.
Search patents in C21D- Granted patents
- 778
- Published applications
- 945
- Assignees
- 190
- Inventors
- 1,841
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 6 | 0 |
| 1978 | 9 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 9 | 0 |
| 1984 | 6 | 0 |
| 1985 | 5 | 0 |
| 1986 | 6 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 4 | 0 |
| 1991 | 7 | 0 |
| 1992 | 6 | 0 |
| 1993 | 2 | 0 |
| 1994 | 7 | 0 |
| 1995 | 5 | 0 |
| 1996 | 12 | 0 |
| 1997 | 6 | 0 |
| 1998 | 13 | 0 |
| 1999 | 6 | 0 |
| 2000 | 11 | 0 |
| 2001 | 10 | 4 |
| 2002 | 10 | 11 |
| 2003 | 14 | 9 |
| 2004 | 12 | 30 |
| 2005 | 6 | 4 |
| 2006 | 6 | 15 |
| 2007 | 4 | 8 |
| 2008 | 4 | 19 |
| 2009 | 7 | 28 |
| 2010 | 12 | 40 |
| 2011 | 13 | 40 |
| 2012 | 15 | 30 |
| 2013 | 14 | 40 |
| 2014 | 22 | 62 |
| 2015 | 33 | 54 |
| 2016 | 25 | 50 |
| 2017 | 44 | 49 |
| 2018 | 43 | 49 |
| 2019 | 43 | 57 |
| 2020 | 39 | 68 |
| 2021 | 44 | 63 |
| 2022 | 51 | 67 |
| 2023 | 41 | 47 |
| 2024 | 53 | 39 |
| 2025 | 44 | 30 |
| 2026 | 24 | 32 |
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
- Press hardening method25 Aug 2026US 12,716,107 B2ArcelorMittal
- 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
- Press hardening method24 Sep 2026US 2026/0286457 A1
- Hot-dip galvanized steel sheet, member formed using hot-dip galvanized steel sheet, automobile frame structural component or automobile reinforcement component comprising member, and method for producing hot-dip galvanized steel sheet and member10 Sep 2026US 2026/0265885 A1Jfe Steel Corporation
- Hot stamping component and manufacturing method therefor27 Aug 2026US 2026/0249342 A1Hyundai Steel Company
- Press hardened steel part having high-strength and improved ductility27 Aug 2026US 2026/0250797 A1
- Steel sheet, member, and part, and methods of producing same27 Aug 2026US 2026/0250813 A1Jfe Steel Corporation
Most cited
By later US patents
- Cold rolled steel sheets having an improved press formability28US 4,775,599 AKawasaki Steel Corporation · 1988
- 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
- High-strength steel sheet highly resistant to dynamic deformation and excellent in workability and process for the production thereof23US 6,544,354 B1Nippon Steel Corporation · 2003