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Expired Canadian patentCanada

Process for preparing vinyl-tri-(tertiary- substituted)alkoxysilanes

CA 1282422 C · Owner: Union Carbide Corporation · Inventors: Demonte, Arthur Paul; Quirk, Jennifer Maryann; Kanner, Bernard

CIPO record

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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 process for preparing vinyl-tri-t-oxysilanes by reacting a tri-t-alkoxysilane with an alkyne in the presence of a platinum hydrosilation catalyst at a reaction temperature greater than 150°C forms a vinyl-tri-t-alkoxysilane in high yields and of high quality.

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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 April 2, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 2, 2008.
  • 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 16, 1986
GrantedApril 2, 1991
Term endedApril 2, 2008
Patent numberCA 1282422 C
Classification (IPC)C07F7/18

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedJan 16, 1986Patent grantedApril 2, 1991Term endedApril 2, 2008

Sources & verification

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