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:
Jul. 16, 2002
Filed:
Sep. 21, 2001
Applicant:
Inventors:
Yukifumi Chiba, Osaka, JP;
Hisashi Higuchi, Hyogo, JP;
Chiaki Kumada, Gifu, JP;
Shunsuke Gotou, Aichi, JP;
Assignee:
NGK Spark Plug Co., Ltd., Aichi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F23Q 7/00 ;
U.S. Cl.
CPC ...
F23Q 7/00 ;
Abstract
The invention provides a glow plug with an electric resistor made of a material comprising 20 to 60% by weight nickel and less than 5% by weight iron and the balance of cobalt and unavoidable impurities. The glow plug pf the invention attains an excellent quick heating ability, a self-temperature control function, high oxidation resistance, long durability and good workability.