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Expired Canadian patentCanada

Tail control and transfer adhesives for rolled paper products

CA 1061493 A · Owner: Swift Chemical Company · Inventors: Reilly, Raymond J.; Adamson, Howard R.

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 novel adhesive composition for tail control of roller paper stock, said composition including a modified starch such as borated dextrin, gelatinized starch pre-, gelatinized starch and mixture thereof polyethylene resin, and water. The adhesive is applied onto the paper stock so as to form a non-continuous film.

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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 28, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 28, 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 28, 1979
Term endedAugust 28, 1996
Patent numberCA 1061493 A
Classification (IPC)C08L3/02 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedAug 28, 1979Term endedAug 28, 1996

Sources & verification

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