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Expired Canadian patentCanada

Fiber optical splitter

CA 1194716 A · Owner: Kapany, Narinder S. · Inventors: Unterleitner, Fred C.; Kapany, Narinder S.

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Abstract From the Canadian patent

The present invention provides modules for interfacing optical fibers with very low light loss and with provision for monitoring of the optical signal. The modules according to the present invention are characterized by the precise tolerances required in high capacity optical communication systems and yet may be mass produced at reasonable costs. A device according to the present invention comprises a transparent imaging element having a curved reflective surface at one end and prealigned fiber insertion holes at the other end. The transparent element is characterized by an index of refraction equal to that of the fiber core and the, fibers are glued in their respective holes with index …

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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 October 8, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 8, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 18, 1981
GrantedOctober 8, 1985
Term endedOctober 8, 2002
Patent numberCA 1194716 A
Classification (IPC)G02B6/24

Timeline

Timeline From CIPO dates

1982198519881991199419972000Application filedMarch 18, 1981Patent grantedOct 8, 1985Term endedOct 8, 2002

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