H01B 17/34
Insulators containing liquid
Official title: Insulators containing liquid, e.g. oil
H01B17/34 (Insulators containing liquid) appears on 32 US grants and 27 published applications in this corpus.
Search patents in H01B- Granted patents
- 32
- Published applications
- 27
- Assignees
- 25
- Inventors
- 83
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 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 | 2 | 1 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 2 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 2 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 1 |
| 2014 | 0 | 3 |
| 2015 | 2 | 1 |
| 2016 | 0 | 2 |
| 2017 | 4 | 1 |
| 2018 | 1 | 4 |
| 2019 | 4 | 1 |
| 2020 | 0 | 2 |
| 2021 | 1 | 0 |
| 2022 | 1 | 0 |
| 2023 | 1 | 2 |
| 2024 | 1 | 1 |
| 2025 | 0 | 1 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Smart electrical bushing with integrated sensor14 Jul 2026US 12,683,043 B2Hitachi Energy Ltd
- Bushing comprising low-viscosity insulating fluid and electrical facility with bushing17 Mar 2026US 12,580,103 B2Hitachi Energy Ltd
- Power equipment and associated manufacturing method17 Dec 2024US 12,170,156 B2Hitachi Energy Ltd
- Electrical isolator18 Apr 2023US 11,631,510 B2Crompton Technology Group Limited
- Electrical isolator29 Nov 2022US 11,515,065 B2Crompton Technology Group Limited
- Electrical apparatus comprising at least one gelled material24 Sep 2026US 2026/0290681 A1Arkema France
- Wet-type outdoor cable termination4 Dec 2025US 2025/0372992 A1Prysmian S P A.
- Bushing comprising low-viscosity insulating fluid and electrical facility with bushing17 Oct 2024US 2024/0347234 A1Hitachi Energy Ltd
- Power equipment and associated manufacturing method2 Nov 2023US 2023/0352216 A1Hitachi Energy Switzerland AG
- Smart electrical bushing with integrated sensor8 Jun 2023US 2023/0178270 A1Hitachi Energy Switzerland AG
Most cited
By later US patents
- Fluid-insulated electrical link device26US 6,309,235 B1Sagem SA · 2001
- Wireless IC tag, and method and apparatus for manufacturing the same22US 7,250,867 B2Hitachi, Ltd. · 2007
- Hybrid electrical insulator bushing13US 4,500,745 AInterpace Corporation · 1985
- Modular condenser bushing10US 4,227,035 AWestinghouse Electric Corp. · 1980
- Bushing including an expansion compensation seal8US 4,609,775 AInterpace Corporation · 1986