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:
Dec. 27, 1977
Filed:
Oct. 30, 1975
Applicant:
Inventors:
Assignee:
Tokyo Shibaura Electric Co., Ltd., Kawasaki, JA;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23P / ; H01L / ;
U.S. Cl.
CPC ...
428596 ; 174 / ; 357 70 ; 428336 ; 428620 ; 428653 ;
Abstract
A lead frame for a semiconductor device, wherein a semiconductor chip-mounting portion, inner lead portions to be connected to the electrodes of said chip and outer lead portions connected to the inner lead portions are each formed of an iron core strip, both sides of which are clad with a layer of aluminum or alloy thereof.