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Expired Canadian patentCanada

Fabrication of customized integrated circuits

CA 1298669 C · Owner: Orbach, Zvi · Inventors: Orbach, Zvi; Janai, Meir Israel

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 technique for production of customized integrated circuits comprising the steps of providing an integrated circuits blank having at least first and second metal layers including portions arranged for selectable removal to provide desired customization of said integrated circuit blank and thereafter, etching at least said first metal layer to customize said integrated circuit blank. 23

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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, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 7, 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.
FiledMarch 24, 1988
GrantedApril 7, 1992
Term endedApril 7, 2009
Patent numberCA 1298669 C
Classification (IPC)H01L23/52 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedMarch 24, 1988Patent grantedApril 7, 1992Term endedApril 7, 2009

Sources & verification

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