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Expired Canadian patentCanada

Process for making form sets from carbonless copy paper sheets

CA 1107010 A · Owner: Appleton Papers Inc. · Inventors: Brown, Robert W.; Becker, William J.; Foris, Peter L.

CIPO record

Overview

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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 process for separating a collated stack of carbonless copy paper sheets into form sets, which comprises pretreating the edge of the stack of sheets to be padded with a non-aqueous material, drying, applying an adhesive composition drying and, separating the unit sets.

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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 18, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 18, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 4, 1979
GrantedAugust 18, 1981
Term endedAugust 18, 1998
Patent numberCA 1107010 A
Classification (IPC)B42C9/00 +2 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedJuly 4, 1979Patent grantedAug 18, 1981Term endedAug 18, 1998

Sources & verification

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