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Expired Canadian patentCanada

Non-linear waveguide components

CA 1234005 A · Owner: Andrew Corporation · Inventors: Dyott, Richard B.

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

A non-linear waveguide component is formed by a pair of optical fibers disposed in side-by-side relation and defining between them a space of elliptical cross-section. A single crystal of electrooptic material is grown in situ in the space between the fibers and has major and minor crystal axes coinciding with the major and minor axes of the space.

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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 March 15, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 15, 2005.
  • 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 26, 1984
GrantedMarch 15, 1988
Term endedMarch 15, 2005
Patent numberCA 1234005 A
Classification (IPC)G02B1/00 +2 more

Timeline

Timeline From CIPO dates

1985198819911994199720002003Application filedJuly 26, 1984Patent grantedMarch 15, 1988Term endedMarch 15, 2005

Sources & verification

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