Improved compression sealing gasket and sealing system
US-2024068569-A1 · Feb 29, 2024 · US
Gas reservoirs
Gas reservoirs · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01H33/56 |
| Official title | Gas reservoirs |
| Display label | Gas reservoirs |
| Total patents | 170 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 12 |
| 2017 | 16 |
| 2018 | 25 |
| 2019 | 21 |
| 2020 | 17 |
| 2021 | 15 |
| 2022 | 15 |
| 2023 | 14 |
| 2024 | 13 |
| 2025 | 11 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Switchgear with Modular Bus Configuration Supporting Individual and Parallel Feed Arrangements
US-2018366924-A1 · Dec 20, 2018 · US
Switchgear with modular bus configuration supporting individual and parallel feed arrangements
US-10158214-B1 · Dec 18, 2018 · US
Power device
US-2018358790-A1 · Dec 13, 2018 · US
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
Gas blast switch comprising an optimized gas storage chamber
US-2018342363-A1 · Nov 29, 2018 · US
Circuit breaker system with heating radiator and particle trap
US-10121619-B2 · Nov 6, 2018 · US
RC voltage dividers used in common GIS gas compartment
US-10103523-B2 · Oct 16, 2018 · US
Gas-insulated circuit breaker and a method for breaking an electrical connection
US-2018294116-A1 · Oct 11, 2018 · US
Switching gas cooling and particle trapping system
US-10079121-B2 · Sep 18, 2018 · US
Gas circuit breaker
US-10049839-B2 · Aug 14, 2018 · US
Gas Breaker
US-2018226214-A1 · Aug 9, 2018 · US
Gas insulated switchgear
US-10043621-B2 · Aug 7, 2018 · US
Switching chamber for a gas-insulated circuit breaker comprising an optimized thermal channel
US-10026571-B1 · Jul 17, 2018 · US
Particle extraction system for an interrupter
US-2018190453-A1 · Jul 5, 2018 · US
Electrical apparatus having a cylindric cover containing an adsorbent
US-10014670-B2 · Jul 3, 2018 · US
Gas circuit breaker
US-9997314-B2 · Jun 12, 2018 · US
SF6 insulated circuit breaker system with thermal capacitor
US-9991064-B2 · Jun 5, 2018 · US
Gas insulated switchgear with the use of insulating gases or fluids, and method of producing the same
US-2018130622-A1 · May 10, 2018 · US
Dielectric insulation medium
US-9928973-B2 · Mar 27, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01H33/56?
- CPC H01H33/56 is the Cooperative Patent Classification code for “Gas reservoirs.”
- How many patents are filed under CPC H01H33/56 (Gas reservoirs)?
- Our database includes 170 publications tagged with this CPC code.
- Is patent activity under CPC H01H33/56 growing?
- Publication counts under this code: 13 in 2024 vs 11 in 2025 (latest complete years).