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Expired Canadian patentCanada

Polyamine-polyene ultraviolet coatings

CA 1304531 C · Owner: Conti, Ronald S. · Inventors: Murphy, Edward J.; Conti, Ronald S.

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

Ultraviolet-curable ethylenically unsaturated liquid coating composition are disclosed which consist essentially of:, 1- polyethylenically unsaturated material in which the ethylenically unsaturated groups are polymerizable groups which are not (meth)acrylate groups;, 2- a polyamine resin preferably a, polytertiary amine resin; and 3- an aryl ketone photosensitizer.

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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 June 30, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 30, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 15, 1987
GrantedJune 30, 1992
Term endedJune 30, 2009
Patent numberCA 1304531 C
Classification (IPC)C09D4/06 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedJuly 15, 1987Patent grantedJune 30, 1992Term endedJune 30, 2009

Sources & verification

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