H01F 41/022
By winding the strips or ribbons around a coil
Official title: {by winding the strips or ribbons around a coil}
H01F41/022 (By winding the strips or ribbons around a coil) appears on 39 US grants and 36 published applications in this corpus.
Search patents in H01F- Granted patents
- 39
- Published applications
- 36
- Assignees
- 29
- Inventors
- 85
- Latest grant
- 7 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 1 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 2 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 3 |
| 2014 | 0 | 6 |
| 2015 | 2 | 2 |
| 2016 | 3 | 1 |
| 2017 | 3 | 3 |
| 2018 | 1 | 3 |
| 2019 | 1 | 2 |
| 2020 | 2 | 1 |
| 2021 | 2 | 2 |
| 2022 | 0 | 1 |
| 2023 | 3 | 2 |
| 2024 | 0 | 0 |
| 2025 | 2 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Toroidal electrical transformer and method of producing same20US 4,779,812 AKuhlman Corporation · 1988
- Three phase transformer with frame shaped winding assemblies19US 5,202,664 A1993
- Methods of making power distribution transformers17US 5,566,443 AGEC Alsthom SA · 1996
- Apparatus and method for winding a strip of material into an arcuate elongate passage14US 4,896,839 AKuhlman Corporation · 1990
- Apparatus and method for continuous magnetic core winding of electrical transformers and inductors13US 6,249,204 B1General Electric Company · 2001