Superconductive conjugate photoconductive substances of the bi-srca(lay)-cu-o system, a method for producing the same and a superconductive optoelectronic devices by using the same
CA 2073955 C · Owner: Masumi, Taizo · Inventors: Masumi, Taizo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The disclosed substance has a composition of a general chemical formula of, Bi2-(Sr2Ca1)1=xt(La2Y1)x-Cu y-Oz where 0.4~x~1, y=2 and z=9-10.5, wherein said substance is an insulator or a semiconductor in the dark and has, a photoconductivity Q(.lambda.T) in conjugate with superconductivity of a superconductor of an adjacent component of the Bi-SrCa-LaY-Cu-O system at a critical temperature (T) of less than 105-115 K and less than 65-85 K at photoexcitation in an optical wavelength range (.lambda.) of 420-670 nm. The present invention relates to a method for producing the same and a superconductive optoelectronic device with the same. The present invention also relates to an element, a device …
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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
- Filed July 15, 1992 and granted April 6, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 15, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 15, 2014.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.