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Expired Canadian patentCanada

Method of making a device comprising a patterned aluminum layer

CA 1283006 C · Owner: Levy, Roland Albert · Inventors: Nuzzo, Ralph George; Levy, Roland Albert; Green, Martin Laurence

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Abstract From the Canadian patent

Abstract, This invention relates to a method of making a device comprising a patterned aluminum layer wherein the, aluminum layer is produced by chemical vapor deposition of an aluminum layer on a substrate. The deposition is facilitated by surface activation prior to deposition. Surface activation is at relatively low temperature and results in a hydrated surface; low temperature surface activation is advantageous in the interest of keeping deposition apparatus free of additional chemicals and, substrates activated in this manner may be stored for considerable lengths of time prior to aluminum deposition. i Among suitable activating agents are organochromium organosilane, and …

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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 16, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 16, 2008.
  • 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 2, 1986
GrantedApril 16, 1991
Term endedApril 16, 2008
Patent numberCA 1283006 C
Classification (IPC)C23C16/02 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedMay 2, 1986Patent grantedApril 16, 1991Term endedApril 16, 2008

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