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Expired Canadian patentCanada

Epoxide and rubber based curable compositions

CA 1311577 C · Owner: Makhlouf, Joseph Michael · Inventors: Chasser, Anthony Michael; Makhlouf, Joseph Michael

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 one package, stable curable composition contains: (a) a non-functional polydiene;, (b) a polyepoxide; and (c) a sulfur and zinc containing vulcanization system adapted to cure the polydiene and the polyepoxide. The aforesaid curable composition is suitable for use as a sealant composition.

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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 December 15, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 15, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 9, 1988
GrantedDecember 15, 1992
Term endedDecember 15, 2009
Patent numberCA 1311577 C
Classification (IPC)C08L21/00 +1 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedSep 9, 1988Patent grantedDec 15, 1992Term endedDec 15, 2009

Sources & verification

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