SubSea Circuit Breaker
US-2025323474-A1 · Oct 16, 2025 · US
for interlocking two or more switches
for interlocking two or more switches · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01H33/52 |
| Official title | for interlocking two or more switches |
| Display label | for interlocking two or more switches |
| Total patents | 30 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 6 |
| 2017 | 4 |
| 2018 | 3 |
| 2019 | 1 |
| 2020 | 1 |
| 2021 | 2 |
| 2022 | 2 |
| 2023 | 3 |
| 2024 | 2 |
| 2025 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Insulated earthing switch for an air insulated or mixed switchgear
US-12413053-B2 · Sep 9, 2025 · US
High voltage circuit-breaker
US-12400816-B2 · Aug 26, 2025 · US
Air circuit breaker
US-2025149274-A1 · May 8, 2025 · US
Interlock device
US-2025125101-A1 · Apr 17, 2025 · US
Interlock device
US-2024312733-A1 · Sep 19, 2024 · US
Switching device on an electric line comprising a vacuum interrupter
US-12087527-B2 · Sep 10, 2024 · US
Insulated earthing switch for an air insulated or mixed switchgear
US-2023396043-A1 · Dec 7, 2023 · US
High voltage circuit-breaker
US-2023245846-A1 · Aug 3, 2023 · US
Switching device on an electric line comprising a vacuum interrupter
US-2023187151-A1 · Jun 15, 2023 · US
Switch device
US-11488790-B2 · Nov 1, 2022 · US
Switch device
US-2022172908-A1 · Jun 2, 2022 · US
Architecture for an electrical switching device
US-11211207-B2 · Dec 28, 2021 · US
Architecture for an electrical switching device
US-2021020387-A1 · Jan 21, 2021 · US
Interlock apparatus for three circuit breakers
US-10614973-B2 · Apr 7, 2020 · US
Network transformer primary disconnect assembly
US-10181384-B2 · Jan 15, 2019 · US
Interlock apparatus of ring main unit
US-10141129-B2 · Nov 27, 2018 · US
Interlock apparatus of circuit breaker
US-2018294109-A1 · Oct 11, 2018 · US
Switching apparatus and method for varying an impedance of a phase line of a segment of an electrical power line
US-9912156-B2 · Mar 6, 2018 · US
Panel device
US-9852866-B2 · Dec 26, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01H33/52?
- CPC H01H33/52 is the Cooperative Patent Classification code for “for interlocking two or more switches.”
- How many patents are filed under CPC H01H33/52 (for interlocking two or more switches)?
- Our database includes 30 publications tagged with this CPC code.
- Is patent activity under CPC H01H33/52 growing?
- Publication counts under this code: 2 in 2024 vs 5 in 2025 (latest complete years).