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Expired Canadian patentCanada

Thermal energy storage apparatus

CA 2082053 C · Owner: Carr, Peter · Inventors: Carr, Peter

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A thermal energy storage apparatus is disclosed which is adapted for use in motor vehicles to provide immediate cooling, or for use in buildings to provide local area cooling or a reduction in peak energy demand. The apparatus comprises a reservoir which is composed of a plurality of separate containers, each containing water and a gas capable of forming a gas hydrate with the water at a transition temperature above 32°F. Also at least, one movable member is positioned in each container which, serves to facilitate the formation of the gas hydrate at or below the transition temperature. In one specific embodiment, the reservoir is positioned in the circulating air duct in a motor vehicle, so …

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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 May 7, 1990 and granted May 2, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 7, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 7, 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.
FiledMay 7, 1990
GrantedMay 2, 2000
Term endedMay 7, 2010
Patent numberCA 2082053 C
Classification (IPC)F25D9/00 +2 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedMay 7, 1990Patent grantedMay 2, 2000Term endedMay 7, 2010

Sources & verification

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