C21D 8/1272
Final recrystallisation annealing
Official title: {Final recrystallisation annealing}
C21D8/1272 (Final recrystallisation annealing) appears on 552 US grants and 768 published applications in this corpus.
Search patents in C21D- Granted patents
- 552
- Published applications
- 768
- Assignees
- 109
- Inventors
- 903
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 6 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 6 | 0 |
| 1993 | 5 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 5 | 0 |
| 1997 | 6 | 0 |
| 1998 | 14 | 0 |
| 1999 | 5 | 0 |
| 2000 | 7 | 0 |
| 2001 | 10 | 3 |
| 2002 | 13 | 13 |
| 2003 | 13 | 8 |
| 2004 | 8 | 8 |
| 2005 | 4 | 5 |
| 2006 | 3 | 4 |
| 2007 | 3 | 2 |
| 2008 | 7 | 5 |
| 2009 | 1 | 10 |
| 2010 | 5 | 4 |
| 2011 | 7 | 8 |
| 2012 | 5 | 12 |
| 2013 | 4 | 29 |
| 2014 | 4 | 20 |
| 2015 | 6 | 29 |
| 2016 | 15 | 28 |
| 2017 | 26 | 25 |
| 2018 | 14 | 33 |
| 2019 | 17 | 36 |
| 2020 | 21 | 39 |
| 2021 | 38 | 47 |
| 2022 | 39 | 94 |
| 2023 | 38 | 66 |
| 2024 | 52 | 83 |
| 2025 | 63 | 85 |
| 2026 | 40 | 72 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Annealing separator composition for grain- oriented electrical steel sheet, grain-oriented electrical steel sheet, and method for producing grain-oriented electrical steel sheet6 Oct 2026US 12,753,457 B2Posco
- Powder for annealing separator and method of producing same, and method of producing grain-oriented electrical steel sheet8 Sep 2026US 12,729,410 B2Jfe Steel Corporation
- Double-oriented electrical steel sheet, and method for producing same8 Sep 2026US 12,729,411 B2Posco
- Non-oriented electrical steel sheet and method for manufacturing same8 Sep 2026US 12,729,418 B2Posco
- Method for producing grain-oriented electrical steel sheet1 Sep 2026US 12,723,288 B2Nippon Steel Corporation
- Non-oriented electrical steel plate with high magnetic induction and manufacturing method thereof8 Oct 2026US 2026/0308707 A1Baoshan Iron & Steel Co., Ltd.
- Grain-oriented electrical steel sheet and manufacturing method of grain-oriented electrical steel sheet17 Sep 2026US 2026/0275467 A1Nippon Steel Corporation
- Grain-oriented electrical steel sheet and insulating coating forming method10 Sep 2026US 2026/0265882 A1Nippon Steel Corporation
- Non-oriented electrical steel plate with good magnetic performance and manufacturing method therefor27 Aug 2026US 2026/0250808 A1Baoshan Iron & Steel Co., Ltd.
- Method for producing electrical steel sheet, and cold-rolled sheet27 Aug 2026US 2026/0250809 A1Jfe Steel Corporation
Most cited
By later US patents
- Method for manufacturing single-oriented electrical steel sheets comprising antimony and having a high magnetic induction46US 3,932,234 AKawasaki Steel Corporation · 1976
- Method of producing non-oriented silicon steel sheets having an excellent electromagnetic property38US 4,204,890 AKawasaki Steel Corporation · 1980
- High performance nanostructured materials and methods of making the same34US 6,596,101 B2The Johns Hopkins University · 2003
- Process for producing nonoriented silicon sheet steel having excellent magnetic properties in the rolling direction26US 4,046,602 AUnited States Steel Corporation · 1977
- Method for producing single-oriented electrical steel sheets having a high magnetic induction22US 3,940,299 AKawasaki Steel Corporation · 1976