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Expired Canadian patentCanada

Acylation of polysilylaromatic organic compounds and products obtained therefrom

CA 1316178 C · Owner: General Electric Company · Inventors: Policastro, Peter Paul

CIPO record

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Abstract From the Canadian patent

RD-17,515, ACYLATION OF POLYSILYLAROMATIC ORGANIC COMPOUNDS AND PRODUCTS OBTAINED THEREFROM, Abstract of the Invention A method for making certain silylaryl ketones is provided by acylating a silarylene with an arylacyl halide in the presence of a Friedel-Crafts catalyst. Silicon containing arylketones are also provided.

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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 13, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 13, 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.
FiledMarch 3, 1988
GrantedApril 13, 1993
Term endedApril 13, 2010
Patent numberCA 1316178 C
Classification (IPC)C07F7/08

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedMarch 3, 1988Patent grantedApril 13, 1993Term endedApril 13, 2010

Sources & verification

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