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Expired Canadian patentCanada

Making protective coatings

CA 1302182 C · Owner: Arnold, Werner · Inventors: Siol, Werner; Arnold, Werner; Felger, Erwin

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A method for applying a coating of a scratch resistant and weather resistant film to a shaped article by applying to said article a thin film of a mixture of a free radically polymerizable monomer having at least two polymerizable olefinic bonds, a peroxide initiator having a half life of less than two minutes at 100°C and an ultra-, violet stabilizer, and then curing said film by heating it to a temperature above 70°C; coated shaped articles made by this method.

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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 2, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 2, 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.
FiledMay 12, 1987
GrantedJune 2, 1992
Term endedJune 2, 2009
Patent numberCA 1302182 C
Classification (IPC)B05D3/02 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedMay 12, 1987Patent grantedJune 2, 1992Term endedJune 2, 2009

Sources & verification

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