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Expired Canadian patentCanada

Cold rolling oil composition for aluminum and aluminum-containingalloys

CA 1281708 C · Owner: Okamoto, Yoshio · Inventors: Manba, Akio; Akao, Masaru; Okamoto, Yoshio

CIPO record

Overview

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Abstract From the Canadian patent

A novel water dispersible cold rolling oil composition for aluminum and aluminum-containing alloys comprising (a) one or more lube oil components selected from mineral oils higher-ratty alcohols, higher fatty esters and higher fatty acids, and (b) a specific water soluble cationic or amphoteric polymer compound. The composition provides a cold rolling lubricant which possesse excellent cooling capability rolling lubricity and circulation stability and can be, readily controlled in operation.

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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 March 19, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 19, 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.
FiledFebruary 12, 1987
GrantedMarch 19, 1991
Term endedMarch 19, 2008
Patent numberCA 1281708 C
Classification (IPC)C10M133/52 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedFeb 12, 1987Patent grantedMarch 19, 1991Term endedMarch 19, 2008

Sources & verification

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