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Expired Canadian patentCanada

High solids corrugating adhesive

CA 1322080 C · Owner: Ablestik Laboratories · Inventors: Leake, Craig H.

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

Alkaline-curing starch-based corrugating adhesives, employing ungelatinized tapioca starch and a carrier comprising high amylose starch, wherein the total solids of the adhesive is from 30 to 45% solids by weight are disclosed. Said, adhesives provide improved tack and corrugator runing speeds.

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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 September 14, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 14, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 18, 1988
GrantedSeptember 14, 1993
Term endedSeptember 14, 2010
Patent numberCA 1322080 C
Classification (IPC)C09J103/02

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedOct 18, 1988Patent grantedSep 14, 1993Term endedSep 14, 2010

Sources & verification

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