Spark plug
US-12444909-B2 · Oct 14, 2025 · US
Adjustment of spark gaps (sparking-plugs having movable electrodes for adjusting the gap H01T13/26)
Adjustment of spark gaps (sparking-plugs having movable electrodes for adjusting the gap H01T13/26) · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01T21/06 |
| Official title | Adjustment of spark gaps (sparking-plugs having movable electrodes for adjusting the gap H01T13/26) |
| Display label | Adjustment of spark gaps (sparking-plugs having movable electrodes for adjusting the gap H01T13/26) |
| Total patents | 39 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 4 |
| 2017 | 1 |
| 2018 | 3 |
| 2019 | 6 |
| 2020 | 3 |
| 2021 | 4 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 5 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Prechamber spark plug having accurately adjustable electrode gap, and associated method
US-12278465-B2 · Apr 15, 2025 · US
Method for producing a spark plug, and spark plug
US-12272930-B2 · Apr 8, 2025 · US
Spark plug
US-2024421565-A1 · Dec 19, 2024 · US
Method for producing a spark plug, and spark plug
US-2024388068-A1 · Nov 21, 2024 · US
Prechamber spark plug having an accurately adjustable electrode gap, and associated method
US-2024170928-A1 · May 23, 2024 · US
Spark plug for boosted engine
US-2024128726-A1 · Apr 18, 2024 · US
Spark plug for boosted engine
US-11942764-B1 · Mar 26, 2024 · US
Spark plug for boosted engine
US-11742636-B1 · Aug 29, 2023 · US
Grid influencing system
US-11569045-B2 · Jan 31, 2023 · US
Spark system for igniters
US-2022302683-A1 · Sep 22, 2022 · US
Vacuum circuit breaker
US-11295913-B2 · Apr 5, 2022 · US
Grid Influencing System
US-2021241980-A1 · Aug 5, 2021 · US
Device for setting the electrode gap on a spark plug
US-11081865-B2 · Aug 3, 2021 · US
Vacuum circuit breaker
US-2021233727-A1 · Jul 29, 2021 · US
Surge protection component and method for producing a surge protection component
US-10923885-B2 · Feb 16, 2021 · US
Spark plug
US-10804682-B2 · Oct 13, 2020 · US
Spark plug
US-2020244048-A1 · Jul 30, 2020 · US
Sensor device for an automated vehicle
US-2020036167-A1 · Jan 30, 2020 · US
Method of producing composite for forming electrode of ignition plug and method of producing ignition plug
US-2019379182-A1 · Dec 12, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01T21/06?
- CPC H01T21/06 is the Cooperative Patent Classification code for “Adjustment of spark gaps (sparking-plugs having movable electrodes for adjusting the gap H01T13/26).”
- How many patents are filed under CPC H01T21/06 (Adjustment of spark gaps (sparking-plugs having movable electrodes for adjusting the gap H01T13/26))?
- Our database includes 39 publications tagged with this CPC code.
- Is patent activity under CPC H01T21/06 growing?
- Publication counts under this code: 5 in 2024 vs 3 in 2025 (latest complete years).