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Expired Canadian patentCanada

Emulsion-type rust preventive baking composition

CA 1279417 C · Owner: Inagaki, Katsumi · Inventors: Mori, Makoto; Inagaki, Katsumi; Sasaki, Katsumi

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Emulsion-type rust-preventive composition which, comprises a polymer emulsion such as an aqueous acrylic resin emulsion and a heat-fusible organic filler having a melting or softening point within the range of 40-250°C which is higher by at least 10°C than the lowest film-forming temperature of the polymer emulsion incorporated in the polymer emulsion. When the emulsion-type rust-preventive baking composition obtained by the mixture is applied to reinforcing steel rods or the like, and baked, the heat-fusible organic filler melts and fills pores in the rust-preventive film coating whereby, the film is rendered close and compact to produce an excellent rust-preventive effect.

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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 January 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 22, 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.
FiledMarch 10, 1987
GrantedJanuary 22, 1991
Term endedJanuary 22, 2008
Patent numberCA 1279417 C
Classification (IPC)C09D5/08 +1 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedMarch 10, 1987Patent grantedJan 22, 1991Term endedJan 22, 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.