H01F 27/18
By evaporating liquids
Official title: by evaporating liquids
H01F27/18 (By evaporating liquids) appears on 82 US grants and 64 published applications in this corpus.
Search patents in H01F- Granted patents
- 82
- Published applications
- 64
- Assignees
- 50
- Inventors
- 198
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 4 | 0 |
| 1978 | 5 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 2 | 0 |
| 1982 | 5 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 2 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 6 |
| 2013 | 1 | 5 |
| 2014 | 2 | 1 |
| 2015 | 4 | 5 |
| 2016 | 2 | 6 |
| 2017 | 3 | 5 |
| 2018 | 5 | 4 |
| 2019 | 3 | 6 |
| 2020 | 4 | 4 |
| 2021 | 4 | 5 |
| 2022 | 4 | 1 |
| 2023 | 4 | 3 |
| 2024 | 2 | 3 |
| 2025 | 2 | 2 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electrotechnical device for an aircraft, comprising low-frequency coil components23 Jun 2026US 12,665,117 B2Safran Electrical & Power
- Electric arrangement, panel and heat exchanger19 May 2026US 12,631,406 B2Hitachi Energy Ltd
- Wireless charging device and mobile means including same23 Sep 2025US 12,424,875 B2Skc Co., Ltd.
- Two-phase liquid-cooled electrical power apparatus1 Jul 2025US 12,349,325 B2Raytheon Company
- Coil device11 Jun 2024US 12,009,131 B2IHI Corporation
- Electric arrangement, panel and heat exchanger27 Aug 2026US 2026/0251405 A1Hitachi Energy Ltd
- Power electronic transformer with cooling unit30 Apr 2026US 2026/0120934 A1Hitachi Energy Ltd
- Planar transformer25 Sep 2025US 2025/0299863 A1Hamilton Sundstrand Corporation
- Energy storage converter and energy storage device27 Feb 2025US 2025/0071956 A1Zhejiang Jinko Energy Storage Co., Ltd.
- Magnetic field generating device23 May 2024US 2024/0170195 A1Adtex Inc.
Most cited
By later US patents
- Method of making integrally formed transformer cooling ducts29US 4,337,569 AGeneral Electric Company · 1982
- Ultrasonic fluid-atomizing cooled power transformer28US 4,350,838 AElectric Power Research Institute, Inc. · 1982
- Cooling apparatus for a gas insulated transformer26US 4,485,367 ATokyo Shibaura Denki Kabushiki Kaisha · 1984
- Cooling arrangements for drive systems25US 9,153,374 B2TECO-Westinghouse Motor Company · 2015
- Vapor-cooled terminal-bushings for oil-type circuit-interrupters24US 4,123,618 AWestinghouse Electric Corp. · 1978