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Expired Canadian patentCanada

Method for recovering sulfur monochloride

CA 1046236 A · Owner: Stauffer Chemical Company · Inventors: Hoffman, Kenneth P.

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

Abstract of the Invention, A method for recovering sulfur monochloride from a process for preparing carbon tetrachloride by the chlorination of carbon disulfide. The method comprises contacting the underflow product from a distillation step, in which carbon tetrachloride is separated from sulfur monochloride, with a substantially dry inert gas, at an elevated temperature to produce a sulfur chloride product having a substantially reduced carbon tetrachloride content.

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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 January 16, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 16, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJanuary 16, 1979
Term endedJanuary 16, 1996
Patent numberCA 1046236 A
Classification (IPC)C01B17/45 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedJan 16, 1979Term endedJan 16, 1996

Sources & verification

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