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Expired Canadian patentCanada

Apparatus for forming optical fiber ends

CA 1098704 A · Owner: International Standard Electric Corporation · Inventors: Kao, Charles K.

CIPO record

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

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Abstract From the Canadian patent

Methods and apparatus are disclosed for forming a precision three-dimensional surface to plastic clad optical fibers. The plastic cladding of a fiber end is deformed to conform to the geometry of the interstice formed between at least three tangential and parallel cylinders. The cylinders are dimensioned such that the clad wire has a greater diameter than the largest circle which can be drawn in the interstice between the cylinders when they are in tangential contact so that with, the cylinder initially apart and the clad fiber end inserted in the interstice, the cylinders can be closed together to deform the plastic cladding. The precision three-dimensional fiber end enables accurate low …

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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 April 7, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 7, 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.
FiledFebruary 27, 1980
GrantedApril 7, 1981
Term endedApril 7, 1998
Patent numberCA 1098704 A
Classification (IPC)G02B6/25

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Application filedFeb 27, 1980Patent grantedApril 7, 1981Term endedApril 7, 1998

Sources & verification

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