C21D 8/1283
Application of a separating or insulating coating
Official title: {Application of a separating or insulating coating}
C21D8/1283 (Application of a separating or insulating coating) appears on 408 US grants and 539 published applications in this corpus.
Search patents in C21D- Granted patents
- 408
- Published applications
- 539
- Assignees
- 65
- Inventors
- 622
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 6 | 0 |
| 1980 | 4 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 5 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 5 | 0 |
| 1997 | 4 | 0 |
| 1998 | 5 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 0 |
| 2002 | 4 | 4 |
| 2003 | 6 | 7 |
| 2004 | 5 | 8 |
| 2005 | 2 | 4 |
| 2006 | 5 | 2 |
| 2007 | 3 | 1 |
| 2008 | 3 | 3 |
| 2009 | 1 | 4 |
| 2010 | 1 | 5 |
| 2011 | 7 | 8 |
| 2012 | 5 | 12 |
| 2013 | 5 | 18 |
| 2014 | 7 | 11 |
| 2015 | 6 | 21 |
| 2016 | 6 | 19 |
| 2017 | 12 | 16 |
| 2018 | 14 | 31 |
| 2019 | 13 | 19 |
| 2020 | 17 | 29 |
| 2021 | 25 | 30 |
| 2022 | 29 | 81 |
| 2023 | 28 | 42 |
| 2024 | 46 | 50 |
| 2025 | 53 | 58 |
| 2026 | 27 | 56 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- 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
- Method for manufacturing grain-oriented electrical steel sheet8 Sep 2026US 12,729,412 B2Jfe Steel Corporation
- Method for producing grain-oriented electrical steel sheet1 Sep 2026US 12,723,288 B2Nippon Steel Corporation
- Method of producing grain-oriented electrical steel sheet and annealing separator used for same1 Sep 2026US 12,723,293 B2Jfe Steel Corporation
- Non-oriented electrical steel plate with high magnetic induction and manufacturing method thereof8 Oct 2026US 2026/0308707 A1Baoshan Iron & Steel Co., Ltd.
- Annealing method for hot-rolled steel strip, and method for producing electrical steel sheet using such annealing method24 Sep 2026US 2026/0286461 A1Jfe Steel Corporation
- Grain-oriented electrical steel sheet and method for forming insulating coating17 Sep 2026US 2026/0275442 A1Nippon Steel Corporation
- High-strength and low-iron-loss non-oriented electrical steel plate and manufacturing method therefor17 Sep 2026US 2026/0275466 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
Most cited
By later US patents
- Extra-low iron loss grain oriented silicon steel sheets24US 4,698,272 AKawasaki Steel Corporation · 1987
- Inorganic/organic insulating coating for nonoriented electrical steel24US 5,955,201 AArmco Inc. · 1999
- Process for production of grain oriented electrical steel sheet having excellent magnetic properties22US 5,512,110 ANippon Steel Corporation · 1996
- Grain oriented silicon steel sheet having excellent primary film properties21US 5,565,272 ANippon Steel Corporation · 1996
- Method of producing extra-low iron loss grain oriented silicon steel sheets20US 4,713,123 AKawasaki Steel Corporation · 1987