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Expired Canadian patentCanada

Thermal barrier coating for substrates and process for producing it

CA 2045654 C · Owner: Taylor, Thomas Alan · Inventors: Taylor, Thomas Alan

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 thermal barrier coating for substrates comprising zirconia partially stabilized by yttria and having a density greater than 88% of the theoretical density with a plurality of vertical macrocracks homogeneously dispersed throughout the coating to improve its thermal fatigue resistance. The invention also discloses a process for producing the thermal barrier coating.

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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

  • Filed October 22, 1990 and granted September 3, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 22, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 22, 2012.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 22, 1990
GrantedSeptember 3, 1996
Term endedOctober 22, 2010
Patent numberCA 2045654 C
Classification (IPC)C23C4/10 +2 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedOct 22, 1990Patent grantedSep 3, 1996Term endedOct 22, 2010

Sources & verification

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