C21D 8/1294
Involving a localised treatment
Official title: involving a localised treatment
C21D8/1294 (Involving a localised treatment) appears on 215 US grants and 177 published applications in this corpus.
Search patents in C21D- Granted patents
- 215
- Published applications
- 177
- Assignees
- 37
- Inventors
- 323
- Latest grant
- 25 Aug 2026
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 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 9 | 0 |
| 1986 | 3 | 0 |
| 1987 | 6 | 0 |
| 1988 | 9 | 0 |
| 1989 | 3 | 0 |
| 1990 | 16 | 0 |
| 1991 | 6 | 0 |
| 1992 | 13 | 0 |
| 1993 | 4 | 0 |
| 1994 | 4 | 0 |
| 1995 | 7 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 1 |
| 2002 | 6 | 2 |
| 2003 | 4 | 4 |
| 2004 | 0 | 1 |
| 2005 | 3 | 0 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 3 |
| 2010 | 1 | 2 |
| 2011 | 3 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 11 |
| 2014 | 2 | 6 |
| 2015 | 1 | 10 |
| 2016 | 4 | 5 |
| 2017 | 4 | 8 |
| 2018 | 11 | 9 |
| 2019 | 5 | 10 |
| 2020 | 8 | 8 |
| 2021 | 8 | 7 |
| 2022 | 10 | 17 |
| 2023 | 7 | 20 |
| 2024 | 10 | 20 |
| 2025 | 12 | 14 |
| 2026 | 9 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Grain-oriented electrical steel sheet and manufacturing method therefor25 Aug 2026US 12,716,134 B2Nippon Steel Corporation
- Wound core25 Aug 2026US 12,718,977 B2Nippon Steel Corporation
- Method for manufacturing grain-oriented electrical steel sheet26 May 2026US 12,640,292 B2Jfe Steel Corporation
- Linear groove formation method and method of producing grain-oriented electrical steel sheet19 May 2026US 12,630,894 B2Jfe Steel Corporation
- Grain-oriented electrical steel sheet and method for refining magnetic domain of same7 Apr 2026US 12,595,528 B2Posco
- Groove depth monitoring system, electrical steel sheet manufacturing apparatus, groove depth monitoring method, and groove depth monitoring program20 Aug 2026US 2026/0241482 A1Nippon Steel Corporation
- Grain-oriented electrical steel sheet and method for forming insulating coating20 Aug 2026US 2026/0242905 A1Nippon Steel Corporation
- Method for manufacturing grain-oriented electrical steel sheet and manufacturing apparatus of grain-oriented electrical steel sheet13 Aug 2026US 2026/0234744 A1Nippon Steel Corporation
- Grain-oriented electrical steel sheet and method for forming intermediate layer and insulating coating included in grain-oriented electrical steel sheet6 Aug 2026US 2026/0226574 A1Nippon Steel Corporation
- Method of surface processing of metal material, method of surface processing of metal sheet, and method of producing grain-oriented electrical steel sheet6 Aug 2026US 2026/0226577 A1Jfe Steel Corporation
Most cited
By later US patents
- Magnetically coded device145US 5,631,093 AGeneral Motors Corporation · 1997
- Laser scribing apparatus and process for using46US 4,535,218 AWestinghouse Electric Corp. · 1985
- Method of producing grain oriented electromagnetic steel sheet45US 3,990,923 ANippon Steel Corporation · 1976
- Grain-oriented electromagnetic steel sheet with improved watt loss43US 4,293,350 ANippon Steel Corporation · 1981
- Method of stress inducing transformation of austenite stainless steel and method of producing composite magnetic members43US 6,949,148 B2Denso Corporation · 2005