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Expired Canadian patentCanada

Fiber optic coupler

CA 1287763 C · Owner: Hodge, Malcolm H. · Inventors: Moras, James A.; Dillon, Richard T.; Hodge, Malcolm H.

CIPO record

Overview

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

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Abstract From the Canadian patent

An optical fiber coupler and method of making same wherein a tap optical fiber free end is adjacent to and facing the unclad region in an intermediate portion of the length of a bus optical fiber at an angle permitting lightwave communication therebetween. A junction medium preferably a, cured resin, encapsulates the tap fiber free end and the bus fiber unclad region to provide a path for the lightwave communication.

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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 20, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 20, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 30, 1987
GrantedAugust 20, 1991
Term endedAugust 20, 2008
Patent numberCA 1287763 C
Classification (IPC)G02B6/28

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedJuly 30, 1987Patent grantedAug 20, 1991Term endedAug 20, 2008

Sources & verification

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