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Expired Canadian patentCanada

Photopolymerizable compounds stabilized against premature gelation with copper compounds and thiocarbamates

CA 1050692 A · Owner: Continental Can Company · Inventors: Pasternack, George; Jondahl, Thor P.

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

Photopolymerizable ethylenically unsaturated ester compositions useful as coating and printing ink vehicles and, especially pigmented coatings and inks are stabilized to pre-, mature gelation by incorporating therein a small but effective amount of a stabilizing combination of a copper containing compound and a thiocarbamate compound.

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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 13, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 13, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedMarch 13, 1979
Term endedMarch 13, 1996
Patent numberCA 1050692 A
Classification (IPC)C08K5/39 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedMarch 13, 1979Term endedMarch 13, 1996

Sources & verification

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