Method for testing a semiconductor spark plug
US-10855058-B2 · Dec 1, 2020 · US
characterised by a discharge along a surface
characterised by a discharge along a surface · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01T13/52 |
| Official title | characterised by a discharge along a surface |
| Display label | characterised by a discharge along a surface |
| Total patents | 92 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 9 |
| 2017 | 10 |
| 2018 | 17 |
| 2019 | 14 |
| 2020 | 17 |
| 2021 | 9 |
| 2022 | 3 |
| 2023 | 3 |
| 2024 | 2 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Ignition device
US-2020271084-A1 · Aug 27, 2020 · US
Spark plug
US-10666023-B2 · May 26, 2020 · US
Optimized barrier discharge device for corona ignition
US-2020124017-A1 · Apr 23, 2020 · US
Spark plug
US-10581226-B2 · Mar 3, 2020 · US
Ignition plug and ignition system including the same
US-10522978-B2 · Dec 31, 2019 · US
Spark plug
US-2019386466-A1 · Dec 19, 2019 · US
Spark plug for internal combustion engine
US-10505347-B2 · Dec 10, 2019 · US
Method and apparatus for controlling operation of an internal combustion engine
US-10487753-B2 · Nov 26, 2019 · US
Spark plug for internal combustion engine
US-10431960-B2 · Oct 1, 2019 · US
Ignition control system and ignition control device
US-2019293042-A1 · Sep 26, 2019 · US
Method for testing a semiconductor spark plug
US-2019229502-A1 · Jul 25, 2019 · US
Spark plug for internal combustion engine
US-2019214792-A1 · Jul 11, 2019 · US
Spark plug for internal combustion engine
US-2019199068-A1 · Jun 27, 2019 · US
High temperature articles for turbine engines
US-2019170066-A1 · Jun 6, 2019 · US
Spark plug including an insulator with a front end portion having first and second sections
US-10305260-B2 · May 28, 2019 · US
Igniter assembly for a gas turbine combustor
US-2019063329-A1 · Feb 28, 2019 · US
Spark plug
US-2019020181-A1 · Jan 17, 2019 · US
Ignition plug
US-10178751-B2 · Jan 8, 2019 · US
Method and apparatus for controlling operation of an internal combustion engine
US-2018347476-A1 · Dec 6, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01T13/52?
- CPC H01T13/52 is the Cooperative Patent Classification code for “characterised by a discharge along a surface.”
- How many patents are filed under CPC H01T13/52 (characterised by a discharge along a surface)?
- Our database includes 92 publications tagged with this CPC code.
- Is patent activity under CPC H01T13/52 growing?
- Publication counts under this code: 2 in 2024 vs 3 in 2025 (latest complete years).