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Expired Canadian patentCanada

Thixotropic alumina coating compositions, parts and methods

CA 1291399 C · Owner: Eddinger, Kevin B. · Inventors: Eddinger, Kevin B.; Mosser, Mark F.

CIPO record

Overview

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Abstract From the Canadian patent

A stable thixotropic coating composition especially suitable for dipspin application having an aqueous acid binder solution which comprises phosphate ions and ions of the group of chromate ions or molybdate ions, and a dispersible hydrated alumina having a boehmite type crystal lattice.

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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 29, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 29, 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.
FiledApril 18, 1984
GrantedOctober 29, 1991
Term endedOctober 29, 2008
Patent numberCA 1291399 C
Classification (IPC)C23C22/33 +1 more

Timeline

Timeline From CIPO dates

19851988199119941997200020032006Application filedApril 18, 1984Patent grantedOct 29, 1991Term endedOct 29, 2008

Sources & verification

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