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. 15, 2015
Filed:
Apr. 02, 2013
Ngk Spark Plug Co., Ltd., Nagoya-shi, Aichi, JP;
Hisashi Kozuka, Ichinomiya, JP;
Tomoko Hishida, Nagoya, JP;
Hideto Yamada, Komaki, JP;
Kazushige Ohbayashi, Nagoya, JP;
NGK SPARK PLUG CO., LTD., Nagoya, JP;
Abstract
Provided is a sintered oxide compact that has high electric conductivity and a small B-value (temperature coefficient), and is suitable for use as an electrically conductive material, and a circuit board that uses the sintered oxide compact. The sintered oxide compact is represented by a composition formula: REaCobNicOx (where RE represents a rare earth element, a+b+c=1, and 1.3≦x≦1.7), the sintered oxide compact includes a perovskite phase with a perovskite-type oxide crystal structure, and the a, b, and c satisfy the following relationships:0.459≦≦0.535,0.200≦≦0.475, and0.025≦≦0.300.