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Expired Canadian patentCanada

Process for the catalytic cracking of a hydrocarbon feedstock

CA 1333576 C · Owner: Maxwell, Ian Ernest · Inventors: Maxwell, Ian Ernest; Biswas, Jaydeep

CIPO record

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Abstract From the Canadian patent

Process for the catalytic cracking of a hydrocarbon feedstock, comprising contacting the feedstock with a catalyst composition comprising a zeolite I having a pore diameter larger than 0.7 nm and a zeolite II having a pore diameter smaller than 0.7 nm which, composition further comprises at least one dehydrogenating metal or metal component under, catalytic cracking conditions.

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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 December 20, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 20, 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.
FiledAugust 15, 1989
GrantedDecember 20, 1994
Term endedDecember 20, 2011
Patent numberCA 1333576 C
Classification (IPC)C10G11/05 +2 more

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedAug 15, 1989Patent grantedDec 20, 1994Term endedDec 20, 2011

Sources & verification

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