Low-temperature refrigerating device using current-carrying superconducting mode/nonsuperconducting mode junctions
CA 2026154 C · Owner: Skertic, Matthew M. · Inventors: Skertic, Matthew M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A refrigerating device (34 or 46) is formed using a refrigerating unit (10) having a hot end (32) at which heat is transferred to a heat sink (22), a cold end (30) at which heat is transferred from a cooling load (28) to the unit (10) a first, junction (14) of a material (16) carrying electrical current in a nonsuperconducting mode to a material (12) carrying electrical current in a, superconducting mode nearest the hot end (32) a, second junction (18) of a material (12) carrying electrical current in a superconducting mode to a material (20) carrying electrical current in a nonsuperconducting mode nearest the cold end (30) and an electrical current source (24) that forces a flow of …
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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 September 25, 1990 and granted December 14, 1993. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 25, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 25, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.