Patent Yard Sign in
Expired Canadian patentCanada

Process for the preparation of synthesis gas

CA 1232456 A · Owner: Shell Canada Limited · Inventors: Engelhard, Wilhelmus F.J.M.; Wu, Hsi L.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

A process for the preparation of synthesis gas by the partial combustion of an ash-containing fuel with an oxygen-containing gas in a reactor, synthesis gas formed being removed through a gas discharge pipe at the top of the reactor and slag formed through a slag discharge at the bottom of the reactor in which the synthe-, sis gas in the reactor is countercurrently contacted with cold fly slag agglomerates in order to improve the slagging efficiency of the process.

Read the whole patent

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 9, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 9, 2005.
  • 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 10, 1983
GrantedFebruary 9, 1988
Term endedFebruary 9, 2005
Patent numberCA 1232456 A
Classification (IPC)C10J3/52 +2 more

Timeline

Timeline From CIPO dates

19841987199019931996199920022005Application filedAug 10, 1983Patent grantedFeb 9, 1988Term endedFeb 9, 2005

Sources & verification

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