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Expired Canadian patentCanada

Solar energy collection apparatus

CA 1104015 A · Owner: Owens-Illinois, Inc. · Inventors: Bieringer, Robert J.; Mather, George R. Jr.

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

An evacuated double wall, tubular solar energy, collector having a concave specular reflecting surface, corresponding to a segment of a cylinder positioned at the opposite side of the collector tube from the sun. The reflector is detachably connected to the tube and the tube is engaged by raised spacing points on the reflector to provide the proper spaced relation between the and allow for water drainage along the reflector. Plural units of the collector tube and cylindricallyshaped reflector combination are supported along opposite sides of an elongated manifold for circulation of an energy absorbing media through them. This system improves the efficiency of total energy collection without …

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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 June 30, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 30, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 9, 1977
GrantedJune 30, 1981
Term endedJune 30, 1998
Patent numberCA 1104015 A
Classification (IPC)F24J2/14 +1 more

Timeline

Timeline From CIPO dates

1978198119841987199019931996Application filedAug 9, 1977Patent grantedJune 30, 1981Term endedJune 30, 1998

Sources & verification

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