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Expired Canadian patentCanada

Alumina-based catalysts, their production and use

CA 1323360 C · Owner: Kneale, Brian · Inventors: Kneale, Brian

CIPO record

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Abstract From the Canadian patent

Case 6798, ABSTRACT OF THE DISCLOSURE, ALUMINA-BASED CATALYSTS THEIR PRODUCTION, AND USE, An alumina-based composition for use as a catalyst is obtained from a composition comprising an alumina having a bulk density of at least 0.6g/ml and a pore volume of less than 0.6ml/g a sintering, agent and a refractory oxide of a rare earth metal by sintering the composition at a temperature of at least 1000°C.

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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 October 19, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 19, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 16, 1988
GrantedOctober 19, 1993
Term endedOctober 19, 2010
Patent numberCA 1323360 C
Classification (IPC)B01J23/10 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedSep 16, 1988Patent grantedOct 19, 1993Term endedOct 19, 2010

Sources & verification

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