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Expired Canadian patentCanada

Light diverting device

CA 1258789 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 diverting device for diverting a part of the light energy transmitted through an optical conductor rod and for taking it out. A light diverting device comprised of a first optical conductor rod having a through-hole in a radial direction; a second and a third optical conductor rod tightly inserted into the through-hole, the edge surfaces of the second and third optical conductor rods in the through-hole being formed so as to be engaged with the inclined surfaces; a fourth optical conductor rod fixed on the outer circumferential surface of the first optical conductor rod so as to cover the inserted portion of the second optical conductor rod. Optical oil is enclosed in a space of 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 August 29, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 29, 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.
FiledFebruary 5, 1985
GrantedAugust 29, 1989
Term endedAugust 29, 2006
Patent numberCA 1258789 A
Classification (IPC)G02B6/28 +2 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedFeb 5, 1985Patent grantedAug 29, 1989Term endedAug 29, 2006

Sources & verification

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