发明授权
- 专利标题： Ceramics having non-linear voltage characteristics and method of producing the same
- 专利标题（中）： 具有非线性电压特性的陶瓷及其制造方法
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申请号： US598956申请日： 1975-07-24
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公开(公告)号： US4038217A公开(公告)日： 1977-07-26
- 发明人: Masaharu Namba , Ikuo Nagasawa , Kazuo Mukae
- 申请人： Masaharu Namba , Ikuo Nagasawa , Kazuo Mukae
- 申请人地址： JA Kawasaki
- 专利权人： Fuji Electric Company Ltd.
- 当前专利权人： Fuji Electric Company Ltd.
- 当前专利权人地址： JA Kawasaki
- 优先权： JA49-85425 19740725; JA49-85426 19740725; JA49-85427 19740725
- 主分类号： H01C7/10
- IPC分类号： H01C7/10 ; H01C1/06 ; H01B1/08
摘要：
A ceramic having non-linear voltage characteristics, comprising the product obtained on mixing (a) zinc oxide, as a principal component, and (b) (1) cobalt and (2) one of neodymium, samarium or dysprosium, either in an elemental form or as a compound thereof, each in an amount of 0.1 to 10 atomic % for the cobalt, neodymium, samarium and dysprosium, calculated as cobalt, neodymium, samarium and dysprosium as subcomponents, and calcining the mixture at a temperature of from about 1150.degree. to about 1400.degree. C.
公开/授权文献
- US5675140A Autofocus control device with a light source 公开/授权日：1997-10-07