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:
May. 12, 1998
Filed:
Sep. 13, 1994
Norio Okuda, Kokubu, JP;
Hiroyuki Arima, Kokubu, JP;
Kyouji Uchiyama, Kokubu, JP;
Michio Ohno, Kokubu, JP;
Hiroaki Ohyama, Kokubu, JP;
Jun Fukuda, Kokubu, JP;
Makoto Niina, Kokubu, JP;
Kyocera Corporation, Kyoto, JP;
Abstract
A ceramic heater for a DC power source comprising an insulating ceramic sintered body, a heating resistor composed of at least two separate layers of heating resistor made of an inorganic conductive material, leads made of high-melting point metal wires and connected to each end of the layers, and electrodes made of an inorganic conductive material, each formed in a single layer or divided into a plurality of pieces and connected to the leads, the heating resistor, leads and electrodes being embedded in the ceramic sintered body. The present invention further includes six related inventions closely related with one another in regard to the above-mentioned ceramic heater and ceramic glow plugs embodied by using the ceramic heater.