C21D 8/1227
Warm rolling
Official title: {Warm rolling}
C21D8/1227 (Warm rolling) appears on 39 US grants and 21 published applications in this corpus.
Search patents in C21D- Granted patents
- 39
- Published applications
- 21
- Assignees
- 19
- Inventors
- 140
- Latest grant
- 25 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 3 | 1 |
| 2003 | 2 | 1 |
| 2004 | 0 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 1 | 1 |
| 2019 | 0 | 1 |
| 2020 | 0 | 1 |
| 2021 | 2 | 1 |
| 2022 | 2 | 4 |
| 2023 | 0 | 1 |
| 2024 | 1 | 4 |
| 2025 | 4 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method of manufacturing grain-oriented electrical steel sheet25 Nov 2025US 12,480,176 B2Jfe Steel Corporation
- Preparation method of glassless grain-oriented silicon steel and product thereof16 Sep 2025US 12,416,059 B2Shougang Zhixin Electromagnetic Materials (Qian'an) Co., Ltd.
- Method for producing grain-oriented electrical steel sheet and cold-rolling facility1 Jul 2025US 12,344,909 B2Jfe Steel Corporation
- Non-oriented electrical steel sheet15 Apr 2025US 12,276,004 B2Nippon Steel Corporation
- Method for producing grain-oriented electrical steel sheet and cold-rolling facility16 Jul 2024US 12,037,654 B2Jfe Steel Corporation
- Thin grain-oriented electrical steel sheet and manufacturing method therefor6 Aug 2026US 2026/0226575 A1Posco
- Non-oriented electrical steel sheet, sra heat treated non-oriented electrical steel sheet and manufacturing methods therefor23 Jul 2026US 2026/0209880 A1Posco
- Non-oriented electrical steel sheet, motor core, method for manufacturing non-oriented electrical steel sheet, and method for manufacturing motor core1 May 2025US 2025/0140456 A1Nippon Steel Corporation
- Method for producing grain-oriented electrical steel sheet and cold-rolling facility3 Oct 2024US 2024/0327942 A1Jfe Steel Corporation
- Soft magnetic steel sheet and manufacturing method thereof3 Oct 2024US 2024/0327960 A1Honda Motor Co., Ltd.
Most cited
By later US patents
- Method of stress inducing transformation of austenite stainless steel and method of producing composite magnetic members43US 6,949,148 B2Denso Corporation · 2005
- Electrical steel sheet suitable for compact iron core and manufacturing method therefor21US 6,562,473 B1Kawasaki Steel Corporation · 2003
- Grain-oriented electrical steel sheet and method of manufacturing the same20US 5,718,775 AKawasaki Steel Corporation · 1998
- Grain-oriented silicon steel sheets having a very low iron loss and methods for producing the same12US 4,579,608 AKawasaki Steel Corporation · 1986
- Method of producing low iron loss, low-noise grain-oriented silicon steel sheet, and low-noise stacked transformer12US 5,411,604 AKawasaki Steel Corporation · 1995