H01F 27/08
Cooling
Official title: Cooling (heat-transfer elements F28F); Ventilating (structural details of casings H01F27/02)
H01F27/08 (Cooling) appears on 1,425 US grants and 1,727 published applications in this corpus.
Search patents in H01F- Granted patents
- 1,425
- Published applications
- 1,727
- Assignees
- 678
- Inventors
- 3,561
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 11 | 0 |
| 1978 | 12 | 0 |
| 1979 | 10 | 0 |
| 1980 | 6 | 0 |
| 1981 | 9 | 0 |
| 1982 | 11 | 0 |
| 1983 | 2 | 0 |
| 1984 | 14 | 0 |
| 1985 | 15 | 0 |
| 1986 | 12 | 0 |
| 1987 | 6 | 0 |
| 1988 | 9 | 0 |
| 1989 | 9 | 0 |
| 1990 | 10 | 0 |
| 1991 | 5 | 0 |
| 1992 | 7 | 0 |
| 1993 | 6 | 0 |
| 1994 | 6 | 0 |
| 1995 | 6 | 0 |
| 1996 | 3 | 0 |
| 1997 | 8 | 0 |
| 1998 | 6 | 0 |
| 1999 | 14 | 0 |
| 2000 | 8 | 0 |
| 2001 | 10 | 1 |
| 2002 | 12 | 8 |
| 2003 | 13 | 16 |
| 2004 | 10 | 23 |
| 2005 | 15 | 28 |
| 2006 | 17 | 22 |
| 2007 | 18 | 24 |
| 2008 | 22 | 38 |
| 2009 | 16 | 33 |
| 2010 | 27 | 36 |
| 2011 | 33 | 43 |
| 2012 | 35 | 50 |
| 2013 | 34 | 49 |
| 2014 | 41 | 81 |
| 2015 | 57 | 77 |
| 2016 | 49 | 88 |
| 2017 | 68 | 105 |
| 2018 | 74 | 111 |
| 2019 | 74 | 117 |
| 2020 | 97 | 132 |
| 2021 | 71 | 141 |
| 2022 | 101 | 112 |
| 2023 | 105 | 115 |
| 2024 | 92 | 121 |
| 2025 | 76 | 84 |
| 2026 | 48 | 72 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Electro-magnetic coil with coolant permeability6 Oct 2026US 12,755,890 B2Magnebotix AG
- Double-side-cooling power module29 Sep 2026US 12,751,337 B2Monolithic Power Systems, Inc.
- Intelligent drying device for transformer15 Sep 2026US 12,734,478 B2Fortune Electric Co., Ltd.
- Inductor connectivity and assemblies15 Sep 2026US 12,738,406 B2Infineon Technologies Austria AG
- Coil device and power conversion device8 Sep 2026US 12,731,715 B2Mitsubishi Electric Corporation
- Coil device and in-vehicle device1 Oct 2026US 2026/0302038 A1Mitsubishi Electric Corporation
- Winding structure1 Oct 2026US 2026/0302039 A1Delta Electronics, Inc.
- Method and system for diagnosing leakage of insulating oil24 Sep 2026US 2026/0287457 A1Fortune Electric Co., Ltd.
- Systems and methods for topographic mapping to design magnetic cores24 Sep 2026US 2026/0290671 A1UT-Battelle, LLC
- Air-cell rupture diagnosis method and system24 Sep 2026US 2026/0290683 A1Fortune Electric Co., Ltd.
Most cited
By later US patents
- Switching electrical power supply utilizing miniature inductors integrally in a PCB210US 4,622,627 ATheta-J Corporation · 1986
- Portable self powered line mountable device for measuring and transmitting ambient temperature191US 9,380,857 B22016
- High-power, low-loss high-frequency electrical coil188US 3,946,349 AThe United States of America as represented by the Secretary of the Air Force · 1976
- Air and water cooled modulator146US 5,448,580 AThe United States of America as represented by the United States Department of Energy · 1995
- System and method for cryogenic cooling of electromagnetic induction filter121US 10,015,908 B2The Boeing Company · 2018