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Expired Canadian patentCanada

Optical fiber cable plug manufacturing method

CA 1255886 A · Owner: Sumitomo Electric Industries, Ltd. · Inventors: Suzuki, Shuzo; Hakamata, Naoshi; Kakii, Toshiaki

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Abstract From the Canadian patent

An optical fiber cable plug manufacturing method providing easy connection between large numbers of optical fibers. The protective cover layer of an optical fiber cable is removed from its middle part to expose the coated optical fibers and the tensile strength member and the, tensile strength member is cut into two parts. Then the, coated optical fibers thus exposed are partially uncoated. Coupling members are disposed along the exposed parts of the optical fibers and molded together with the optical fibers with resin to provide a molding. The molding is cut perpendicularly to its longitudinal axis into two symmetrical parts, and the cut end faces are polished to provide two symmetrical …

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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 June 20, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 20, 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.
FiledMarch 13, 1986
GrantedJune 20, 1989
Term endedJune 20, 2006
Patent numberCA 1255886 A
Classification (IPC)B29D11/00 +2 more

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedMarch 13, 1986Patent grantedJune 20, 1989Term endedJune 20, 2006

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