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Expired Canadian patentCanada

Light conducting member

CA 1259214 A · Owner: Mori, Kei · Inventors: Mori, Kei

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 light conducting member transmits optical energy which is incident on one end thereof. The member is made up of a number of integrated light conducting cables which define the light incidence end of the member at one ends thereof. Each light conducting cable is formed in a truncated hexagonal pyramid or formed to define at least three surfaces thereof. The light incidence end of the light conductor is formed flat or to constitute part of a spherical surface or part of a conical surface.

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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 September 12, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 12, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 4, 1984
GrantedSeptember 12, 1989
Term endedSeptember 12, 2006
Patent numberCA 1259214 A
Classification (IPC)G02B6/00 +1 more

Timeline

Timeline From CIPO dates

19851988199119941997200020032006Application filedJan 4, 1984Patent grantedSep 12, 1989Term endedSep 12, 2006

Sources & verification

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