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:
Dec. 14, 1993
Filed:
Nov. 19, 1990
Applicant:
Inventors:
Jonathan Z Sun, Goleta, CA (US);
Theodore H Geballe, Woodside, CA (US);
Bruce Lairson, Palo Alto, CA (US);
Assignee:
The Board of Trustees of the Leland Stanford Junior University, Stanford, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01B / ;
U.S. Cl.
CPC ...
505-1 ; 62 511 ; 505726 ; 505780 ;
Abstract
Magnetic shielding currents having a critical current density, Jc, at a superconducting temperature are stabilized by reducing the temperature of the superconducting body after a steady state or persistent current is established. The current density of the current at the reduced temperature is below the critical current density for the material at the reduced temperature. Decay of the magnetic shielding current at the reduced temperature is significantly reduced.