H01F 27/322
The insulation forming channels for circulation of the fluid
Official title: {the insulation forming channels for circulation of the fluid}
H01F27/322 (The insulation forming channels for circulation of the fluid) appears on 118 US grants and 103 published applications in this corpus.
Search patents in H01F- Granted patents
- 118
- Published applications
- 103
- Assignees
- 70
- Inventors
- 357
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 1 |
| 2003 | 1 | 1 |
| 2004 | 0 | 3 |
| 2005 | 4 | 3 |
| 2006 | 4 | 4 |
| 2007 | 2 | 3 |
| 2008 | 1 | 3 |
| 2009 | 3 | 5 |
| 2010 | 7 | 3 |
| 2011 | 1 | 5 |
| 2012 | 6 | 4 |
| 2013 | 2 | 4 |
| 2014 | 0 | 8 |
| 2015 | 10 | 7 |
| 2016 | 6 | 6 |
| 2017 | 4 | 6 |
| 2018 | 3 | 4 |
| 2019 | 1 | 5 |
| 2020 | 5 | 3 |
| 2021 | 1 | 3 |
| 2022 | 4 | 7 |
| 2023 | 3 | 5 |
| 2024 | 4 | 5 |
| 2025 | 3 | 1 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Transformer with improved natural circulation for cooling disc coils39US 4,000,482 AGeneral Electric Company · 1976
- Insulation structures for electrical inductive apparatus32US 4,173,747 AWestinghouse Electric Corp. · 1979
- Single phase dry-type transformer31US 5,621,372 ASquare D Company · 1997
- Apparatus for active cooling of an MRI patient bore in cylindrical MRI systems31US 7,015,692 B2GE Electric Company · 2006
- Dry-type transformer and method of manufacturing28US 5,396,210 ASquare D Company · 1995