Spark plug having spark portion provided with a base material and a protective material
US7569979B2 · kind B2 · utility
24Cited by
10References
53Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2007 |
| Grant date | Aug 4, 2009 |
| Priority date | — |
| Expiry date | May 24, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01T13/39
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A spark plug having a center electrode and a ground electrode wherein the spark portion of at least one of the center electrode and ground electrode includes a base material and a protective material that substantially prevents corrosion of the base material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.