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Expired Canadian patentCanada

Cyanoacrylate adhesive composition containing tannins

CA 1255033 A · Owner: Minnesota Mining And Manufacturing Company · Inventors: Millet, George 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

Cyanoacrylate adhesive compositions containing a tannin e.g. digallic acid, tannic acid or other, hydrolyzable or condensed tannin. The inclusion of tannin increases adhesion and heat resistance of the cured adhesive on metal substrates.

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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 May 30, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 30, 2006.
  • 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 11, 1984
GrantedMay 30, 1989
Term endedMay 30, 2006
Patent numberCA 1255033 A
Classification (IPC)C08F222/00 +1 more

Timeline

Timeline From CIPO dates

19851988199119941997200020032006Application filedOct 11, 1984Patent grantedMay 30, 1989Term endedMay 30, 2006

Sources & verification

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