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Expired Canadian patentCanada

Synthesis gas production process

CA 1205632 A · Owner: Ube Industries, Ltd. · Inventors: Chujo, Tsuneo; Yasuhara, Takaaki; Ueki, Yuzo

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Abstract From the Canadian patent

A process for producing synthesis gas comprising the steps of solvent deasphalting heavy hydrocarbonaceous oil and a mixture of carbonaceous materials and heavy hydrocarbonaceous oil by using light hydrocarbonaceous oil as a deasphalting oil; and partially oxidizing a resulting mixture of the carbonaceous materials and asphalt to produce synthesis gas. The mixture of carbonaceous materials and heavy hydrocarbonaceous oil is obtained by bringing a slurry containing carbonaceous materials by-produced in the partial oxidation of the mixture of the carbonaceous materials and asphalt in water into contact with light hydrocarbonaceous oil, followed by separating the oil phase and the aqueous …

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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 June 10, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 10, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 19, 1982
GrantedJune 10, 1986
Term endedJune 10, 2003
Patent numberCA 1205632 A
Classification (IPC)C01B3/28 +2 more

Timeline

Timeline From CIPO dates

1983198619891992199519982001Application filedAug 19, 1982Patent grantedJune 10, 1986Term endedJune 10, 2003

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