H01F 27/245
Made from sheets
Official title: made from sheets, e.g. grain-oriented (H01F27/26 takes precedence)
H01F27/245 (Made from sheets) appears on 545 US grants and 626 published applications in this corpus.
Search patents in H01F- Granted patents
- 545
- Published applications
- 626
- Assignees
- 290
- Inventors
- 1,388
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 8 | 0 |
| 1980 | 6 | 0 |
| 1981 | 3 | 0 |
| 1982 | 5 | 0 |
| 1983 | 1 | 0 |
| 1984 | 8 | 0 |
| 1985 | 9 | 0 |
| 1986 | 8 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 6 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 7 | 0 |
| 2000 | 9 | 0 |
| 2001 | 3 | 1 |
| 2002 | 6 | 3 |
| 2003 | 8 | 12 |
| 2004 | 11 | 11 |
| 2005 | 5 | 6 |
| 2006 | 5 | 8 |
| 2007 | 3 | 9 |
| 2008 | 3 | 6 |
| 2009 | 7 | 6 |
| 2010 | 9 | 11 |
| 2011 | 7 | 10 |
| 2012 | 3 | 12 |
| 2013 | 7 | 15 |
| 2014 | 8 | 14 |
| 2015 | 8 | 31 |
| 2016 | 13 | 31 |
| 2017 | 23 | 69 |
| 2018 | 30 | 53 |
| 2019 | 40 | 58 |
| 2020 | 49 | 57 |
| 2021 | 35 | 45 |
| 2022 | 38 | 42 |
| 2023 | 34 | 32 |
| 2024 | 38 | 33 |
| 2025 | 33 | 30 |
| 2026 | 19 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Wound core22 Sep 2026US 12,744,149 B2Nippon Steel Corporation
- Substrate embedded magnetic core inductors and method of making8 Sep 2026US 12,731,717 B2Intel Corporation
- Wound core25 Aug 2026US 12,718,977 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
- Electrotechnical device for an aircraft14 Jul 2026US 12,683,056 B2Safran Electrical & Power
- Transformer stacked iron core elasticity matrix determination method and vibration analysis method, and non-transitory computer readable medium8 Oct 2026US 2026/0309681 A1Jfe Steel Corporation
- Medical Wireless Charging Device With Ferrite Stack Centered And Directly Contacted To A Charging Coil8 Oct 2026US 2026/0312429 A1Greatbatch Ltd.
- Transformer stacked iron core elasticity matrix determination method and vibration analysis method, and non-transitory computer readable medium1 Oct 2026US 2026/0298879 A1Jfe Steel Corporation
- Multi-layer inductor and transformer24 Sep 2026US 2026/0290677 A13M Innovative Properties Company
- Grain-oriented electrical steel sheet and method for forming insulating coating17 Sep 2026US 2026/0279629 A1Nippon Steel Corporation
Most cited
By later US patents
- Contact-less power transfer495US 6,906,495 B2Splashpower Limited · 2005
- Contact-less power transfer438US 7,525,283 B2Access Business Group International LLC · 2009
- DC-AC inverter173US 4,183,079 ASony Corporation · 1980
- Contact-less power transfer117US 7,714,537 B2Access Business Group International LLC · 2010
- Contact-less power transfer117US 7,863,861 B2Access Business Group International LLC · 2011