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Expired Canadian patentCanada

Chemical vapor deposition

CA 1087040 A · Owner: Inco Limited · Inventors: Hanley, Robert S.; Crosby, Jeffrey N.

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 process for chemical vapor deposition of ruthenium on heat resistant substrates employing ruthenium 1, 3 dione compounds as volatile sources and causing the volatile material to impact on a heated receiving substrate in random fashion in a quiescent low-pressure atmosphere.

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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 October 7, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 7, 1997.
  • 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 11, 1976
GrantedOctober 7, 1980
Term endedOctober 7, 1997
Patent numberCA 1087040 A
Classification (IPC)C23C16/18

Timeline

Timeline From CIPO dates

1977198019831986198919921995Application filedMay 11, 1976Patent grantedOct 7, 1980Term endedOct 7, 1997

Sources & verification

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