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:
Jan. 25, 2000
Filed:
Mar. 03, 1998
Jae Do Lee, Daejonkwangyok-si, KR;
Young Min Choi, Daejonkwangyok-si, KR;
Oh Sang Lee, Daejonkwangyok-si, KR;
Sang Hoon Lee, Seoul, KR;
Korea Research Institiute of Chemical Technology, Kaejonkwangyok-si, KR;
Abstract
A silicon-based ceramic heater suitable for use in a glow plug of a diesel engine, the heater comprising a refractory metal heating element, preferably a wire which consists essentially of tungsten (W), molybdenum (Mo), or an alloy of tungsten and molybdenum; a titanium nitride (TiN) coating on the heating element, which coating serves as a barrier to the diffusion of silicon and defines a coated heating element; and a sintered body, preferably consisting essentially of silicon nitride (Si.sub.3 N.sub.4), silicon carbide (SiC), or a composite of silicon nitride and silicon carbide, within which the coated heating element is embedded.