Spark plug
US-2018375298-A1 · Dec 27, 2018 · US
with interference suppressing or shielding means
with interference suppressing or shielding means · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01T13/41 |
| Official title | with interference suppressing or shielding means |
| Display label | with interference suppressing or shielding means |
| Total patents | 113 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 12 |
| 2016 | 13 |
| 2017 | 20 |
| 2018 | 19 |
| 2019 | 15 |
| 2020 | 11 |
| 2021 | 6 |
| 2022 | 7 |
| 2023 | 4 |
| 2024 | 2 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Spark plug
US-2018358784-A1 · Dec 13, 2018 · US
Spark plug
US-10153618-B2 · Dec 11, 2018 · US
Spark plug having a powder capsule
US-10090649-B2 · Oct 2, 2018 · US
Spark plug
US-10090646-B2 · Oct 2, 2018 · US
High frequency discharge ignition device
US-2018278027-A1 · Sep 27, 2018 · US
Spark plug
US-10084288-B2 · Sep 25, 2018 · US
Spark plug
US-10079476-B2 · Sep 18, 2018 · US
Spark plug
US-2018183216-A1 · Jun 28, 2018 · US
Spark plug
US-2018175592-A1 · Jun 21, 2018 · US
Spark plug for internal combustion engine
US-9954344-B2 · Apr 24, 2018 · US
Spark plug for internal combustion engine
US-2018034246-A1 · Feb 1, 2018 · US
Spark plug capable of restraining lateral sparking
US-9876332-B2 · Jan 23, 2018 · US
Spark plug
US-2018019578-A1 · Jan 18, 2018 · US
Spark plug
US-9871352-B2 · Jan 16, 2018 · US
Spark plug
US-9843167-B2 · Dec 12, 2017 · US
Spark plug
US-9837798-B1 · Dec 5, 2017 · US
Spark plug capable of restraining lateral sparking
US-2017346259-A1 · Nov 30, 2017 · US
Spark plug
US-9831638-B2 · Nov 28, 2017 · US
Spark plug
US-2017331259-A1 · Nov 16, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01T13/41?
- CPC H01T13/41 is the Cooperative Patent Classification code for “with interference suppressing or shielding means.”
- How many patents are filed under CPC H01T13/41 (with interference suppressing or shielding means)?
- Our database includes 113 publications tagged with this CPC code.
- Is patent activity under CPC H01T13/41 growing?
- Publication counts under this code: 2 in 2024 vs 4 in 2025 (latest complete years).