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:
Jul. 16, 1991
Filed:
Apr. 28, 1989
Applicant:
Inventors:
Carmelo Oliveri, Castiglione di Silicia, IT;
Alfonso Patti, Catania, IT;
Sergio Fleres, Catania, IT;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ; H01L / ; H01L / ;
U.S. Cl.
CPC ...
357 36 ; 357 71 ; 357 68 ; 357 34 ;
Abstract
A bipolar power semiconductor device, particularly a transistor, of structure formed by a matrix array of cells operating as emitter regions, comprises two separated and superposed layers of metal, one for the base and one for the emitter, separated by a layer of polyimide, as an intermediate dielectrtic.