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Expired Canadian patentCanada

Amphora-type particulate catalyst-support and a method for the preparation of an amphora-type particulate catalyst-support

CA 1330075 C · Owner: Research Association For Petroleum Alternatives Development · Inventors: Ito, Toshio

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Abstract From the Canadian patent

An amphora-type particulate catalyst-support having an adequately small average particle size and a low attrition index and a method for preparing an amphora-type particulate catalyst-support are disclosed wherein the, method comprises the steps of: (a) forming a mixed slurry having a solid content of 10 to 30 wt% by adding water to a mixture of 60 to 80 parts by weight of a component (A) comprising at least one component selected from the group consisting of allophane, red mud, bauxite and laterite, with 20 to 40 parts by weight of a binder (B) such as, silica sol, alumina-titania, etc.; (b) wet grinding the solid in the mixed slurry to form a slurry of finely divided solid having an …

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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 7, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 7, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 16, 1989
GrantedJune 7, 1994
Term endedJune 7, 2011
Patent numberCA 1330075 C
Classification (IPC)B01J23/16 +2 more

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedFeb 16, 1989Patent grantedJune 7, 1994Term endedJune 7, 2011

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