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.

Date of Patent:
Sep. 06, 1994

Filed:

Apr. 28, 1993
Applicant:
Inventors:

Hitoki Tokuda, Osaka, JP;

Michitomo Iiyama, Osaka, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
505193 ; 307462 ; 307245 ; 307306 ; 307475 ; 307476 ; 257 39 ; 505701 ; 505220 ;
Abstract

A superconducting interface circuit converting a signal sent from a normal conducting circuit into a small voltage swing signal suitable for a superconducting circuit includes a superconducting field effect device. The superconducting field effect device has a superconducting channel of an extremely thin oxide superconductor thin film, a superconducting source region and a superconducting drain region of an oxide superconductor thin film positioned at both ends of the superconducting channel, and a gate electrode on the superconducting channel through a gate insulator. The gate electrode of the super-FET is connected to a signal line which transmits a voltage signal from the normal conducting circuit.


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