The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 14, 2015
Filed:
Oct. 24, 2012
Applicant:
Federal-mogul Ignition Company, Southfield, MI (US);
Inventor:
Shuwei Ma, Ann Arbor, MI (US);
Assignee:
Federal-Mogul Ignition Company, Southfield, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01T 21/02 (2006.01); H01T 13/39 (2006.01);
U.S. Cl.
CPC ...
H01T 13/39 (2013.01); H01T 21/02 (2013.01);
Abstract
A method of making a spark plug electrode includes several steps. One step includes providing an inner core of a ruthenium (Ru) based alloy or an iridium (Ir) based alloy. Another step includes providing an outer skin over a portion or more of the inner core in order to produce a core and skin assembly. The outer skin can be made of platinum (Pt), gold (Au), silver (Ag), nickel (Ni), or an alloy of one of these. Yet another step includes increasing the temperature of the core and skin assembly. And another step includes hot forming the core and skin assembly at the increased temperature.