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Expired Canadian patentCanada

Water based precure paint for rubber articles

CA 1319210 C · Owner: Magnus, Fredrick Lewis · Inventors: Magnus, Fredrick Lewis

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

There is disclosed a water based coating composition for unvulcanized rubber articles that comprises (1) a polymeric antidegradant latex (2) an, additional emulsifier, (3) a thickening agent and (4), a filler/mold release/lubricating agent. The water based coating composition is placed on an uncured rubber article prior to vulcanization and results in improved molding of the rubber article and provides a final rubber vulcanizate that possesses superior antidegradative properties.

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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 June 15, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 15, 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.
FiledMay 15, 1989
GrantedJune 15, 1993
Term endedJune 15, 2010
Patent numberCA 1319210 C
Classification (IPC)C08J7/04 +2 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedMay 15, 1989Patent grantedJune 15, 1993Term endedJune 15, 2010

Sources & verification

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