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Expired Canadian patentCanada

Hot-melt pressure sensitive adhesive compositions and method of using same

CA 1322901 C · Owner: Sweet, Randall P. · Inventors: Sweet, Randall P.

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 hot-melt silicone pressure sensitive adhesive composition comprising i) a silicone resin ii) a silicone, fluid, and iii) 1 to 10 weight percent based on the total weight of said silicone resin and said silicone fluid of an, ester having the formula:, wherein R is a monovalent hydrocarbon radical having from 2 to 32 carbon atoms and R' is a monovalent hydrocarbon radical having from 1 to 14 carbon atoms.

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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 October 12, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 12, 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.
FiledAugust 15, 1989
GrantedOctober 12, 1993
Term endedOctober 12, 2010
Patent numberCA 1322901 C
Classification (IPC)C09J183/04 +1 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedAug 15, 1989Patent grantedOct 12, 1993Term endedOct 12, 2010

Sources & verification

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