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. 18, 1993
Filed:
Nov. 09, 1990
Applicant:
Inventors:
David F Bell, Woodstock, NY (US);
Bruno R Pagnani, Raleigh, NC (US);
James R Warnot, Jr, Rhinebeck, NY (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H05K / ;
U.S. Cl.
CPC ...
361385 ; 622592 ; 174 154 ; 361382 ; 505-1 ; 505700 ; 257716 ;
Abstract
A board containing plural superconducting power planes, one for each required potential level, is used to distribute power to one or more semiconductor logic chips which, together with the board, are immersed in liquid nitrogen. Each chip is coupled thermally to a heat exchanger and is coupled electrically to the board through leads that minimize heat transfer from the chip to the board.