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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Akagi; Junko
Address:
Yokohama, JP
No. of patents:
1
Patents:












Patent Number Title Of Patent Date Issued
4370180 Method for manufacturing power switching devices January 25, 1983
A method for manufacturing power switching devices such as thyristors and power transistors comprising the steps of forming impurity diffused layers of one conductivity type and of the opposite conductivity type in a semiconductor substrate of one conductivity type; forming a film co










 
 
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