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Expired Canadian patentCanada

Method of epitaxially growing compound semiconductor materials

CA 1301035 C · Owner: Gte Laboratories Incorporated · Inventors: Shastry, Shambhu K.

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

Method of MOVPE growing a compound semiconductor material, for example GaAs, on a substrate for example, Si. Sodium ions are first introduced onto the substrate surface as by immersing it in a cleaning solution containing sodium. A two-step MOVPE process is then employed to grow device quality single crystal compound semiconductor material on the surface of the substrate.

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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 May 19, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 19, 2009.
  • 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 9, 1987
GrantedMay 19, 1992
Term endedMay 19, 2009
Patent numberCA 1301035 C
Classification (IPC)C30B25/02 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedJuly 9, 1987Patent grantedMay 19, 1992Term endedMay 19, 2009

Sources & verification

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