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:
Sep. 14, 1999
Filed:
Mar. 29, 1996
Applicant:
Inventor:
Leonid Viktorovich Budaragin, Moscow, RU;
Assignee:
Sparco, Inc., Roswell, GA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01T / ; B05D / ;
U.S. Cl.
CPC ...
313141 ; 313144 ; 313127 ; 313137 ; 4273761 ; 427226 ;
Abstract
The present process for the production of sparkplugs provides coated sparkplugs that are resistant to carbonization or lead fouling of the central ceramic insulator. A liquid metal carboxylate composition is applied to the insulator of the sparkplug and subjected to heat treatment at a temperature preferably above 400.degree. C. to form a durable metal oxide layer on the insulator.