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, 1981
Filed:
Jun. 01, 1979
Applicant:
Inventors:
Ken-ichi Muramoto, Kawasaki, JP;
Keizo Tani, Tokyo, JP;
Yutaka Tomisawa, Yokohama, JP;
Makoto Hideshima, Tokyo, JP;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
357 20 ; 357 13 ; 357 34 ; 357 86 ;
Abstract
A junction type semiconductor device, wherein a protective diode is formed in a part of the region consisting of a base region and a collector region. The device permits reducing the manufacturing cost of semiconductor elements, makes it possible to provide a smaller electric apparatus, and is high in reliability.