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Expired Canadian patentCanada

Material and method for forming pressure-transferable graphics

CA 1161350 A · Owner: Minnesota Mining And Manufacturing Company · Inventors: Vanden Bergh, Jan D.

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 composite material and method for forming graphics such as letters or numbers that are pressure transferable to a substrate. The composite material includes an accepting tape including a layer of latent adhesive material on a receiving web, and a frangible slightly adhesive layer lightly adhered to a donor web. When the layers are pressed together and the composite material is selectively heated in graphic patterns corresponding portions of the adhesive material and frangible layer adhere together so that upon subsequent separation of the layer of adhesive and the donor web portions of the friable layer transfer to the accepting tape in the heated areas to provide graphics. When the …

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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 January 31, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 31, 2001.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 13, 1981
GrantedJanuary 31, 1984
Term endedJanuary 31, 2001
Patent numberCA 1161350 A
Classification (IPC)B41M3/12 +2 more

Timeline

Timeline From CIPO dates

1982198419861988199019921994199619982000Application filedApril 13, 1981Patent grantedJan 31, 1984Term endedJan 31, 2001

Sources & verification

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