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Expired Canadian patentCanada

Method for preparing organosilicon compounds from elemental silicon and hydrocarbon ethers

CA 1095924 A · Owner: Dow Corning Corporation · Inventors: Speier, John L.; Malek, James R.; Wright, Antony P.

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

Organosilicon compounds bearing silicon-bonded hydrocarbon radicals and silicon-bonded hydrocarbonoxy radicals are obtained by contacting activated silicon a hydrocarbon ether and a halogen-containing catalyst in a closed system at elevated temperature. Silanes and siloxanes, particularly methylmethoxysilanes may be, prepared and used to prepare valuable silicone materials.

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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 February 17, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 17, 1998.
  • 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, 1978
GrantedFebruary 17, 1981
Term endedFebruary 17, 1998
Patent numberCA 1095924 A
Classification (IPC)C07F7/18 +1 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedMarch 3, 1978Patent grantedFeb 17, 1981Term endedFeb 17, 1998

Sources & verification

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