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Expired Canadian patentCanada

Method of repairing lacquer damage, and clear lacquer composition for carrying the method into effect

CA 1061028 A · Owner: Auto-Make Up Ab · Inventors: Severinsson, Lars M.; Mattsson, Hjalmar E.; Wingvist, Bengt E.C.

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

A method of spot repairing lacquered surfaces especially on motor cars and other vehicles, in which after a spot repair in any conventional manner the repaired surface and adjacent area of the original lacquer is coated with a border line obliterating liquid which consists of a clear lacquer composition of a mixture of from between 65 and 80 parts by weight of polymethyl methacrylate and 35 and 20 parts by weight of cellulose acetate butyrate, which composition is dissolved in an organic solvent or solvent mixture in such an amount that the border line obliterating liquid will have a viscosity suitable for spray application. 1a

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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 August 21, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 21, 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—
GrantedAugust 21, 1979
Term endedAugust 21, 1996
Patent numberCA 1061028 A
Classification (IPC)C09D133/12 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedAug 21, 1979Term endedAug 21, 1996

Sources & verification

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