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Expired Canadian patentCanada

Solar energy reflector-collector

CA 1075942 A · Owner: Consuntrator · Inventors: L'Esperance, Paul M.; Pavlak, Alex J.

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 system including a non-tracking reflector-collector for the concentration and collection of solar energy. An energycollecting plate is disposed upright along a substantially horizontal axis substantially coincident with the east-west direction of the earth. The collector plate is positioned within a semi-tubular reflector having parabolic sidewalls. The reflector surfaces on opposite sides of the collector plate are parabolic surfaces, each having a focal point approximately coincident with the upper terminal edge of the collector plate. The axes of the parabolas which define the respective surfaces are rotated about or diverge from their common focal point at a substantial angle. The …

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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

  • Granted April 22, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 22, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedApril 22, 1980
Term endedApril 22, 1997
Patent numberCA 1075942 A
Classification (IPC)G02B17/00 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedApril 22, 1980Term endedApril 22, 1997

Sources & verification

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