H01F 27/2455
Using deformed sheets
Official title: {using deformed sheets, e.g. bent laminations}
H01F27/2455 (Using deformed sheets) appears on 53 US grants and 75 published applications in this corpus.
Search patents in H01F- Granted patents
- 53
- Published applications
- 75
- Assignees
- 36
- Inventors
- 133
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 3 |
| 2004 | 2 | 2 |
| 2005 | 2 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 3 |
| 2012 | 0 | 2 |
| 2013 | 1 | 2 |
| 2014 | 1 | 1 |
| 2015 | 3 | 5 |
| 2016 | 1 | 2 |
| 2017 | 3 | 8 |
| 2018 | 1 | 3 |
| 2019 | 1 | 2 |
| 2020 | 6 | 4 |
| 2021 | 3 | 5 |
| 2022 | 1 | 8 |
| 2023 | 3 | 12 |
| 2024 | 5 | 6 |
| 2025 | 5 | 6 |
| 2026 | 4 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Wound core25 Aug 2026US 12,718,977 B2Nippon Steel Corporation
- Method and device for producing wound core19 May 2026US 12,633,452 B2Nippon Steel Corporation
- Oriented electrical steel sheet and method for manufacturing same5 May 2026US 12,620,513 B2Posco
- Wound core13 Jan 2026US 12,525,384 B2Nippon Steel Corporation
- Wound core16 Dec 2025US 12,500,027 B2Nippon Steel Corporation
- Wound core27 Nov 2025US 2025/0364173 A1Nippon Steel Corporation
- Wound core4 Sep 2025US 2025/0279234 A1Nippon Steel Corporation
- Three-phase three-legged wound core and method for production thereof5 Jun 2025US 2025/0182949 A1Jfe Steel Corporation
- Wound core producing apparatus and wound core producing method10 Apr 2025US 2025/0118489 A1Nippon Steel Corporation
- Wound core producing apparatus and wound core producing method27 Mar 2025US 2025/0104908 A1Nippon Steel Corporation
Most cited
By later US patents
- Welding transformer with drooping voltage-current characteristics39US 4,229,721 AInstytut Spawalnictwa · 1980
- Progressive stamping die assembly having transversely movable die station and method of manufacturing a stack of laminae therewith36US 6,742,239 B2L. H. Carbide Corporation · 2004
- Electrical current sensor31US 4,706,017 AHamilton Standard Controls, Inc. · 1987
- Amorphous metal core laminations25US 4,364,020 AWestinghouse Electric Corp. · 1982
- Interlock tabs for laminations19US 6,847,285 B2General Electric Company · 2005