H01G 4/04
Liquid dielectrics
H01G4/04 (Liquid dielectrics) appears on 53 US grants and 43 published applications in this corpus.
Search patents in H01G- Granted patents
- 53
- Published applications
- 43
- Assignees
- 34
- Inventors
- 118
- Latest grant
- 7 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 2 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 2 | 4 |
| 2014 | 2 | 2 |
| 2015 | 3 | 4 |
| 2016 | 2 | 2 |
| 2017 | 3 | 4 |
| 2018 | 10 | 2 |
| 2019 | 2 | 4 |
| 2020 | 3 | 5 |
| 2021 | 2 | 2 |
| 2022 | 4 | 2 |
| 2023 | 3 | 2 |
| 2024 | 3 | 2 |
| 2025 | 3 | 1 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and methods for generating high voltage pulses7 Apr 2026US 12,597,912 B1Radiance Technologies, Inc.
- 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
- Systems and methods for patterning valve metals14 Jan 2025US 12,198,855 B1The Florida International University Board of Trustees
- Systems and methods for patterning valve metals12 Nov 2024US 12,142,429 B1The Florida International University Board of Trustees
- Three dimensional immunomechanical organoid model19 Mar 2026US 2026/0079151 A1University of Notre Dame du Lac
- High-power and high energy-density capacitor with scavenger19 Mar 2026US 2026/0081073 A1Weinberg Medical Physics LLC
- Methods and systems for capacitor impregnation22 Jan 2026US 2026/0024701 A1
- Industrial machines using breakdown in liquid dielectrics17 Jul 2025US 2025/0232917 A1M Hikari & Energy Laboratory Co., Ltd.
- Synthetic ester and mineral oil dielectric fluids with increased stability8 Feb 2024US 2024/0043766 A1Cargill, Incorporated
Most cited
By later US patents
- Electroviscous fluids21US 3,970,573 A1976
- Energy storage device15US 8,940,850 B2Carver Scientific, Inc. · 2015
- High permittivity low leakage capacitor and energy storing device and method for forming the same14US 8,432,663 B2Carver Scientific, Inc. · 2013
- Thixotropic dielectric fluid for capacitors12US 6,177,031 B1General Electric Company · 2001
- Electric insulating oil compositions9US 4,175,278 ANippon Petrochemicals Company, Limited · 1979