Patent Yard Sign in
Expired Canadian patentCanada

Devices using high t -superconductors and method for making the same

CA 1312147 C · Owner: Gambino, Richard J. · Inventors: Koch, Roger H.; Marwick, Alan D.; Laibowitz, Robert B.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

Tc SUPERCONDUCTORS AND METHOD FOR MAKING THE SAME, ABSTRACT OF THE DISCLOSURE A superconducting device operable at temperatures in excess of 30°K and a method for making the device are described. A representative device is an essentially coplanar SQUID device formed in a single layer of high Tc superconducting material the SQUID, device being operable at temperatures in excess of 60°K. High energy beams, for example ion beams are, used to convert selected portions of the high Tc superconductor to nonsuperconducting properties so that the material now has both superconducting regions and nonsuperconducting regions. In this manner a superconducting loop having superconducting weak links can …

Read the whole patent

Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted December 29, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 29, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 7, 1988
GrantedDecember 29, 1992
Term endedDecember 29, 2009
Patent numberCA 1312147 C
Classification (IPC)H01L39/14 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedApril 7, 1988Patent grantedDec 29, 1992Term endedDec 29, 2009

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.