H01F 27/2876
Cooling
Official title: {Cooling (cooling transformers and inductances in general H01F27/08)}
H01F27/2876 (Cooling) appears on 285 US grants and 387 published applications in this corpus.
Search patents in H01F- Granted patents
- 285
- Published applications
- 387
- Assignees
- 219
- Inventors
- 923
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 0 |
| 2002 | 2 | 3 |
| 2003 | 2 | 1 |
| 2004 | 1 | 4 |
| 2005 | 2 | 2 |
| 2006 | 4 | 2 |
| 2007 | 1 | 8 |
| 2008 | 4 | 5 |
| 2009 | 6 | 7 |
| 2010 | 2 | 8 |
| 2011 | 3 | 6 |
| 2012 | 3 | 8 |
| 2013 | 9 | 9 |
| 2014 | 5 | 15 |
| 2015 | 8 | 17 |
| 2016 | 11 | 21 |
| 2017 | 11 | 26 |
| 2018 | 16 | 31 |
| 2019 | 21 | 30 |
| 2020 | 18 | 36 |
| 2021 | 18 | 39 |
| 2022 | 29 | 33 |
| 2023 | 18 | 33 |
| 2024 | 31 | 24 |
| 2025 | 23 | 11 |
| 2026 | 13 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electro-magnetic coil with coolant permeability6 Oct 2026US 12,755,890 B2Magnebotix AG
- Methods for thermal management in inductors8 Sep 2026US 12,731,721 B2Hamilton Sundstrand Corporation
- Transformer, power conversion device, product group of transformer, and manufacturing method for transformer18 Aug 2026US 12,712,115 B2Mitsubishi Electric Corporation
- Inductors for direct current (DC) circuit breakers in aircraft applications11 Aug 2026US 12,706,242 B2Hamilton Sundstrand Corporation
- Reactor4 Aug 2026US 12,700,535 B2ABB E-mobility B.V.
- Internally-cooled actuator coil24 Sep 2026US 2026/0290679 A1ASML Netherlands B. V.
- Charger and motor vehicle20 Aug 2026US 2026/0241825 A1Mahle International GmbH
- Coil device30 Jul 2026US 2026/0221327 A1TDK Corporation
- Inductor assembly, apparatus for generating a magnetic field and associated methods30 Jul 2026US 2026/0221328 A1Zimmer MedizinSysteme GmbH
- Thermoplastic coil spacer23 Jul 2026US 2026/0210776 A1One Power Company
Most cited
By later US patents
- Cooling apparatus for windings52US 5,097,241 ASundstrand Corporation · 1992
- Air/liquid cooled metallic turn for high frequency high power charging transformers46US 5,545,966 ADelco Electronics Corporation · 1996
- Charging paddle44US 6,175,212 B1Kabushiki Kaisha Toyoda Jidoshokki Seisakusho · 2001
- Planar transformer having integrated cooling features34US 6,278,354 B1Motorola, Inc. · 2001
- Transformer with fluid cooled windings32US 4,577,175 AMarelco Power Systems, Inc. · 1986