Spark plug
US12230941B2 · kind B2 · utility
0Cited by
0References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 27, 2024 |
| Grant date | Feb 18, 2025 |
| Priority date | — |
| Expiry date | Jun 27, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01T13/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A spark plug includes a ceramic insulator, and the insulator includes a melted portion formed by melting a surface of a base material. In a cross section of the insulator, the value obtained by dividing a length of an interface between the base material and the melted portion by the length of a line segment connecting two ends of the interface is 1.1 or more and 1.5 or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.