H01F 1/18
With insulating coating
Official title: with insulating coating
H01F1/18 (With insulating coating) appears on 281 US grants and 369 published applications in this corpus.
Search patents in H01F- Granted patents
- 281
- Published applications
- 369
- Assignees
- 77
- Inventors
- 571
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 5 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 2 | 1 |
| 2003 | 3 | 3 |
| 2004 | 1 | 7 |
| 2005 | 1 | 7 |
| 2006 | 4 | 2 |
| 2007 | 2 | 1 |
| 2008 | 2 | 2 |
| 2009 | 0 | 2 |
| 2010 | 1 | 2 |
| 2011 | 2 | 7 |
| 2012 | 2 | 6 |
| 2013 | 3 | 17 |
| 2014 | 4 | 9 |
| 2015 | 3 | 13 |
| 2016 | 9 | 15 |
| 2017 | 5 | 6 |
| 2018 | 11 | 23 |
| 2019 | 13 | 16 |
| 2020 | 16 | 22 |
| 2021 | 19 | 23 |
| 2022 | 17 | 68 |
| 2023 | 17 | 22 |
| 2024 | 44 | 41 |
| 2025 | 45 | 26 |
| 2026 | 15 | 28 |
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
- Electrical steel sheet having insulating coating, method for producing the same, transformer core and transformer using the electrical steel sheet, and method for reducing dielectric loss in transformer4 Aug 2026US 12,700,528 B2Jfe Steel Corporation
- Grain-oriented electrical steel sheet and method for forming insulating coating16 Jun 2026US 12,655,502 B2Nippon Steel Corporation
- Grain-oriented electrical steel sheet and method for forming insulating coating16 Jun 2026US 12,655,503 B2Nippon Steel Corporation
- Non-oriented electrical steel sheet and method for manufacturing the same9 Jun 2026US 12,649,957 B2Nippon Steel Corporation
- Method for producing insulation coating treatment liquid for grain-oriented electrical steel sheet and method for producing grain-oriented electrical steel sheet8 Oct 2026US 2026/0308387 A1Nippon Steel Corporation
- Non-oriented electrical steel plate and manufacturing method therefor20 Aug 2026US 2026/0242904 A1Baoshan Iron & Steel Co., Ltd.
- Fe-co based alloy substrate and manufacturing method thereof, fe-co based alloy coated substrate and manufacturing method thereof, and laminated core member20 Aug 2026US 2026/0242916 A1Proterial, Ltd.
- Method for manufacturing fe-co-based coated alloy substrate, fe-co-based coated alloy substrate, and laminated core member13 Aug 2026US 2026/0234805 A1Proterial, Ltd.
- 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
Most cited
By later US patents
- Method of making laminated magnetic material60US 4,025,379 A1977
- Bonded laminations forming a stator core43US 4,103,195 AGeneral Electric Company · 1978
- Magnetic material having high permeability in the high frequency range40US 4,640,871 ASony Corporation · 1987
- Laser treatment of electrical steel32US 4,456,812 AArmco Inc. · 1984
- Selective etching process for cutting amorphous metal shapes and components made thereof31US 7,235,910 B2Metglas, Inc. · 2007