H01B 3/56
Gases
Official title: gases
H01B3/56 (Gases) appears on 104 US grants and 139 published applications in this corpus.
Search patents in H01B- Granted patents
- 104
- Published applications
- 139
- Assignees
- 50
- Inventors
- 235
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 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 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 0 | 1 |
| 2010 | 1 | 2 |
| 2011 | 2 | 3 |
| 2012 | 1 | 4 |
| 2013 | 0 | 5 |
| 2014 | 5 | 7 |
| 2015 | 4 | 17 |
| 2016 | 6 | 5 |
| 2017 | 6 | 9 |
| 2018 | 8 | 23 |
| 2019 | 10 | 9 |
| 2020 | 13 | 9 |
| 2021 | 7 | 5 |
| 2022 | 9 | 8 |
| 2023 | 4 | 12 |
| 2024 | 7 | 10 |
| 2025 | 6 | 2 |
| 2026 | 2 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Compositions and uses of trans-1,1,1,4,4,4-hexafluoro-2-butene and 1,1-difluoroethane (R-152A)15 Sep 2026US 12,734,388 B2The Chemours Company Fc, LLC
- Gas-insulating medium and application thereof21 Apr 2026US 12,609,213 B2Electric Power Research Institute of Guangdong Power Grid Co., Ltd.
- Gas-insulated switching device using C3HCIF4 or C4H2F628 Oct 2025US 12,456,851 B2AGC Inc.
- Power device comprising an insulation gas for use in an electric energy power arrangement21 Oct 2025US 12,451,674 B2Hitachi Energy Ltd
- Insulation supporting assembly and gas-insulated transmission line5 Aug 2025US 12,381,382 B2Hitachi Energy Ltd
- Gas-insulated electrical apparatus comprising heptafluoroisobutyronitrile and heptafluoroisopropyl(trifluoromethyl)ketone9 Jul 2026US 2026/0196378 A1GE Vernova Infrastructure Technology LLC
- Gas insulated electric apparatus23 Apr 2026US 2026/0112867 A1Hitachi Energy Ltd
- Insulation gas for high voltage component of electron microscopes9 Apr 2026US 2026/0100326 A1
- Insulating gas used for electrical insulation or arc extinguishing by replacing sf6 gas and electrical device using same5 Feb 2026US 2026/0038709 A1Korea Electro Technology Research Institute
- Compositions comprising 2,3,3,3-tetrafluoropropene, 1,1,2,3-tetra-chloropropene, 2-chloro-3,3,3-trifluoropropene, or 2-chloro-1,1,1,2-tetrafluoropropane29 Jan 2026US 2026/0027399 A1The Chemours Company Fc, LLC
Most cited
By later US patents
- Composition including 2,3,3,3-tetrafluoropropene32US 9,650,551 B2Arkema France · 2017
- Gaseous insulators for high voltage electrical equipment29US 4,257,905 AThe United States of America as represented by the United States Department of Energy · 1981
- Gas-insulated electric device29US 4,565,901 AMitsubishi Denki Kabushiki Kaisha · 1986
- Supersaturated vapor dielectrics26US 4,440,971 AElectric Power Research Institute, Inc. · 1984
- Azeotropic or quasi-azeotropic composition of chloromethane25US 9,650,553 B2Arkema France · 2017