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Expired Canadian patentCanada

Solvent-based urethane coating compositions

CA 1338718 C · Owner: Ici Americas Inc. · Inventors: Lai, Kwo-Hrong; Buschmann, Ralph Edward

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

An organic solution containing a urethane having improved physical properties in addition to excellent flame retardant properties is obtained when a combination of a halogen containing diol, such as an alkoxylated tetrabromobisphenol A, or dibromoneopentyl glycol optionally with a carboxy containing diol, is incorporated in the urethane.

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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 November 12, 1996. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 12, 2013.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 5, 1988
GrantedNovember 12, 1996
Term endedNovember 12, 2013
Patent numberCA 1338718 C
Classification (IPC)C08G18/38 +2 more

Timeline

Timeline From CIPO dates

198919921995199820012004200720102013Application filedJan 5, 1988Patent grantedNov 12, 1996Term endedNov 12, 2013

Sources & verification

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