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Expired Canadian patentCanada

Light-stabilized polymer microparticles

CA 1304867 C · Owner: Slongo, Mario · Inventors: Berner, Godwin; Rembold, Manfred; Slongo, Mario

CIPO record

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Abstract From the Canadian patent

3-15652/+, Light-stabilized polymer microparticles Abstract, Light-stabilized polymer microparticles which con-, tain at least one light stabilizer and processes for the, preparation of these microparticles by polymerization of suitable monomers, at least a part of the polymerization being carried out in the presence of at least one light stabilizer, are described. The polymer microparticles can be used in coating compositions which comprise a disperse phase containing these particles and a liquid continuous phase. Coatings and finishes based on the compositions according to the invention are distinguished by improved weathering resistance, in particular by a high light stability.

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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 July 7, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 7, 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.
FiledDecember 4, 1986
GrantedJuly 7, 1992
Term endedJuly 7, 2009
Patent numberCA 1304867 C
Classification (IPC)C08F246/00 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedDec 4, 1986Patent grantedJuly 7, 1992Term endedJuly 7, 2009

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