H01F 27/125
Cooling by synthetic insulating and incombustible liquid
Official title: {Cooling by synthetic insulating and incombustible liquid}
H01F27/125 (Cooling by synthetic insulating and incombustible liquid) appears on 34 US grants and 31 published applications in this corpus.
Search patents in H01F- Granted patents
- 34
- Published applications
- 31
- Assignees
- 22
- Inventors
- 62
- Latest grant
- 11 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 2 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 2 |
| 2010 | 3 | 2 |
| 2011 | 1 | 1 |
| 2012 | 2 | 2 |
| 2013 | 2 | 2 |
| 2014 | 0 | 1 |
| 2015 | 0 | 1 |
| 2016 | 1 | 0 |
| 2017 | 1 | 2 |
| 2018 | 2 | 2 |
| 2019 | 0 | 2 |
| 2020 | 1 | 1 |
| 2021 | 2 | 3 |
| 2022 | 1 | 2 |
| 2023 | 2 | 1 |
| 2024 | 2 | 2 |
| 2025 | 3 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Synthetic ester and mineral oil dielectric fluids with increased stability11 Nov 2025US 12,467,009 B2Cargill, Incorporated
- Dielectric fluids comprising natural bio-sourced oil with increased stability11 Nov 2025US 12,467,010 B2Cargill, Incorporated
- Soundproofing transformer18 Mar 2025US 12,255,010 B2Hyundai Electric & Energy Systems Co., Ltd.
- Transformer with integrated cooling22 Oct 2024US 12,125,629 B2Deere & Company
- Stationary induction apparatus11 Jun 2024US 12,009,134 B2Mitsubishi Electric Corporation
- Synthetic ester and mineral oil dielectric fluids with increased stability8 Feb 2024US 2024/0043766 A1Cargill, Incorporated
- Dielectric fluids comprising natural bio-sourced oil with increased stability8 Feb 2024US 2024/0043767 A1Cargill, Incorporated
- Soluble water scavenger molecules for use with dielectric fluids24 Aug 2023US 2023/0265349 A1General Electric Technology GmbH
- Soundproofing transformer28 Jul 2022US 2022/0238273 A1Hyundai Electric & Energy Systems Co., Ltd.
- Stationary induction apparatus20 Jan 2022US 2022/0020520 A1Mitsubishi Electric Corporation
Most cited
By later US patents
- Gas-insulated stationary induction electrical apparatus47US 4,904,972 AHitachi, Ltd. · 1990
- Food grade vegetable oil based dielectric fluid and methods of using same42US 6,398,986 B1Cooper Industries, Inc. · 2002
- Vegetable oil based dielectric coolant37US 6,037,537 ACooper Industries, Inc. · 2000
- Vegetable oil based dielectric fluid and methods of using same37US 7,651,641 B2Cooper Industries, Inc. · 2010
- Vegetable oil based dielectric fluid29US 6,352,655 B1Cooper Industries, Inc. · 2002