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:
Apr. 10, 1990
Filed:
Feb. 12, 1981
Applicant:
Inventors:
Gunther Fenner, Nashua, NH (US);
Klaus Gillessen, Untergruppenbach, DE;
Erhard Kohn, Leingarten, DE;
Assignee:
Telefunken Electronic GmbH, Heilbronn, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
357 15 ; 357 52 ; 357 56 ; 357 71 ; 357 73 ;
Abstract
A varactor diode comprising a semiconductor element, with a pn-junction barrier layer or rectifying metal semiconductor junction on one outer face, an ohmic substrate contact on the opposite outer face and a glass casing in which the diode is hermetically sealed.