Method and facility for filling a gas-insulated electrical apparatus comprising a mixture of (cf3)2cfcn and co2
US-2018358148-A1 · Dec 13, 2018 · US
gases
gases · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01B3/56 |
| Official title | gases |
| Display label | gases |
| Total patents | 183 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 19 |
| 2016 | 11 |
| 2017 | 15 |
| 2018 | 28 |
| 2019 | 19 |
| 2020 | 21 |
| 2021 | 11 |
| 2022 | 17 |
| 2023 | 15 |
| 2024 | 17 |
| 2025 | 7 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Methods for dielectrically insulating electrical active parts
US-2018358793-A1 · Dec 13, 2018 · US
Methods for dielectrically insulating electrical active parts
US-2018350485-A1 · Dec 6, 2018 · US
Methods for dielectrically insulating electrical active parts
US-2018350483-A1 · Dec 6, 2018 · US
Methods for dielectrically insulating electrical active parts
US-2018322981-A1 · Nov 8, 2018 · US
Insulation fluid heating apparatus and method
US-2018295675-A1 · Oct 11, 2018 · US
Fluorinated Nitriles as Dielectric Gases
US-2018286530-A1 · Oct 4, 2018 · US
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-tetrafluoropropane
US-9943717-B2 · Apr 17, 2018 · US
Dielectric insulation medium
US-9928973-B2 · Mar 27, 2018 · US
Methods for dielectrically insulating electrical active parts
US-2018082763-A1 · Mar 22, 2018 · US
Electrical switching device
US-9899167-B2 · Feb 20, 2018 · US
Medium- or high-voltage electrical appliance having a low environmental impact and hybrid insulation
US-9899125-B2 · Feb 20, 2018 · US
Azeotropic and azeotrope-like compositions of z-1-chloro-3,3,3-trifluoropropene
US-2018043199-A1 · Feb 15, 2018 · US
Composition comprising HF, 3,3,3-trifluoro-2-chloropropene, and E-3,3,3-trifluoro-1-chloropropene
US-9889416-B2 · Feb 13, 2018 · US
Gas-insulated medium-or high-voltage electrical apparatus including heptafluoroisobutyronitrile and tetrafluoromethane
US-2018040391-A1 · Feb 8, 2018 · US
Gas-insulated medium or high-voltage electrical apparatus including carbon dioxide, oxygen, and heptafluoro-isobutyronitrile
US-9837801-B2 · Dec 5, 2017 · US
Method for increasing the dielectric withstand strength in an electrical apparatus, and apparatus having an improved dielectric strength according to this method
US-2017291729-A1 · Oct 12, 2017 · US
Nitrogen containing hydrofluoroethers and methods of using same
US-2017283365-A1 · Oct 5, 2017 · US
Apparatus for the generation, distribution and/or usage of electrical energy and component for such an apparatus
US-2017287588-A1 · Oct 5, 2017 · US
Composition containing 2,3,3,3-tetrafluoropropene and 1,2-difluoroethylene
US-2017218241-A1 · Aug 3, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01B3/56?
- CPC H01B3/56 is the Cooperative Patent Classification code for “gases.”
- How many patents are filed under CPC H01B3/56 (gases)?
- Our database includes 183 publications tagged with this CPC code.
- Is patent activity under CPC H01B3/56 growing?
- Publication counts under this code: 17 in 2024 vs 7 in 2025 (latest complete years).