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. 25, 1976
Filed:
Jan. 31, 1974
Applicant:
Inventors:
Maurice Bonis, Herouville, FR;
Bernard Roger, Carpiquet, FR;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ; H01L / ; H01L / ;
U.S. Cl.
CPC ...
148175 ; 29577 ; 29578 ; 29580 ; 148187 ; 307315 ; 357 44 ; 357 46 ; 357 56 ;
Abstract
A device having complementary transistors and method of manufacturing same. A monolithic device which comprises at least two transistors of opposite conductivity types. The device is provided on a substrate which is covered with an epitaxial region of the opposite conductivity type and in this region the base of a transistor is formed by a localized epitaxial layer which is present above the said region, the collector of the said transistor and the base of the other transistor adjoining each other in said region. Amplifiers of the Darlington type FIG. 4.