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. 29, 2012
Filed:
Nov. 23, 2011
Yoichi Kawase, Nagaokakyo, JP;
Syunsuke Okuda, Nagaokakyo, JP;
Yuichi Hirata, Nagaokakyo, JP;
Yasuhiro Nabika, Nagaokakyo, JP;
Yoichi Kawase, Nagaokakyo, JP;
Syunsuke Okuda, Nagaokakyo, JP;
Yuichi Hirata, Nagaokakyo, JP;
Yasuhiro Nabika, Nagaokakyo, JP;
Murata Manufacturing Co., Ltd., Nagaokakyo-Shi, Kyoto-fu, JP;
Abstract
A barium titanate-based semiconductor ceramic composition which can be used for PTC thermistors for temperature sensors and which has characteristics, including a linear characteristic, advantageous for such PTC thermistors and a barium titanate-based semiconductor ceramic device. The barium titanate-based semiconductor ceramic composition is represented by the formula (BaMeSr)TiO+ySiO, wherein Me is at least one of Er, Sm, Ce, and La, 0.001≦v≦0.005, 0.42≦w≦0.49, 0.99≦x≦1.03, and 0.002≦y≦0.030.