H02H 5/06
In oil-filled electric apparatus
Official title: in oil-filled electric apparatus
H02H5/06 (In oil-filled electric apparatus) appears on 9 US grants and 5 published applications in this corpus.
Search patents in H02H- Granted patents
- 9
- Published applications
- 5
- Assignees
- 8
- Inventors
- 24
- Latest grant
- 10 Jan 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 2 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Smart grid distribution transformer10 Jan 2023US 11,550,000 B2Hitachi Energy Switzerland AG
- Temperature based fluid level estimation in an electrical device6 Sep 2022US 11,437,185 B2Siemens Aktiengesellschaft
- Electrical equipment for distribution network13 Jul 2010US 7,755,868 B2
- Apparatus and method for predicting an overload trip for an electrical power transformer27 Apr 2004US 6,727,821 B2Perseus 2000, LLC
- Apparatus for preventing thermal damage to an electrical power transformer23 Jul 2002US 6,424,266 B1NxtPhase Technology SRL
- System and method for monitoring load usage on an electrical transformer28 May 2026US 2026/0146898 A1Eskom Holdings SOC Limited
- Temperature based fluid level estimation in an electrical device31 Dec 2020US 2020/0411233 A1Siemens Aktiengesellschaft
- Smart grid distribution transformer17 Dec 2020US 2020/0393521 A1ABB Power Grids Switzerland AG
- Electrical equipment for distribution network12 Jul 2007US 2007/0159743 A1
- Apparatus for preventing thermal damage to an electrical power transformer5 Dec 2002US 2002/0180611 A1Perseus 2000, LLC
Most cited
By later US patents
- System for monitoring abnormality of oil-filled electric devices29US 4,402,211 AHitachi, Ltd. · 1983
- Device for overload protection of electric apparatus13US 4,148,086 A1979
- Apparatus for preventing thermal damage to an electrical power transformer12US 6,424,266 B1NxtPhase Technology SRL · 2002
- Pressure and temperature responsive protective devices7US 4,223,364 A1980
- Apparatus and method for predicting an overload trip for an electrical power transformer7US 6,727,821 B2Perseus 2000, LLC · 2004