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Expired Canadian patentCanada

Semiconductor laser source

CA 1164700 A · Owner: Thomson-Csf · Inventors: Tondu, Claude; Maumy, Alain; Duda, Eugene

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

The invention relates to laser sources using a semiconduct chip from which the radiation is collected by an optical fibre. In accordance with the invention there is provided a laser source in which the support for the semiconductor chip and the optical fibre is metallic. The support is stamped with an impression comprising a seat for the semiconductor chip and it least one groove for accomodating the optical fibre. The invention, is applicable to radiation sources used in optical telecommunication systems.

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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 3, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 3, 2001.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 17, 1979
GrantedApril 3, 1984
Term endedApril 3, 2001
Patent numberCA 1164700 A
Classification (IPC)G02B6/42

Timeline

Timeline From CIPO dates

19801983198619891992199519982001Application filedMay 17, 1979Patent grantedApril 3, 1984Term endedApril 3, 2001

Sources & verification

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