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Expired Canadian patentCanada

Method of treating organic waste material and a catalyst/cocatalystcomposition useful therefor

CA 1305119 C · Owner: Delphi Research Inc. · Inventors: Dhooge, Patrick M.

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Abstract From the Canadian patent

A catalyst/cocatalyst composition of matter and methods for using the catalytic combination for electrolytically treating organic waste material, for producing hydrogen and for electrowinning metals are described. Use of the catalyst/cocatalyst composition causes the reaction rate to increase and/or the activation energy to decrease and, causes the anode potential and the energy required for the reaction to decrease. An electrolyte including the catalyst/cocatalyst composition and a reaction medium composition further including organic waste material and, methods for their use are also described. 29

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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 July 14, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 14, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 15, 1987
GrantedJuly 14, 1992
Term endedJuly 14, 2009
Patent numberCA 1305119 C
Classification (IPC)C25B1/00 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedMay 15, 1987Patent grantedJuly 14, 1992Term endedJuly 14, 2009

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