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Expired Canadian patentCanada

Crystalline gallosilicates, a process for producing them and their use as catalysts

CA 1209981 A · Owner: The British Petroleum Company P.L.C. · Inventors: Young, Dennis; Barri, Sami A.I.

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Abstract From the Canadian patent

Crystalline gallosilicates a process for producing, them and their use as catalysts This invention reates to crystalline gallosilicates having the following composition in terms of the mole ratios of the oxides: 0.9 ? 0.25M2/nO : Ga2O3 : xSiO2 : yH2O.zQ wherein M is at least one cation having a valence n x is at least 10, y/x is from 0 to 30, Q is a template used in the synthesis of the gallosilicate and z/x is 0-20, wherein the gallosilicate in the organic free hydrogen-form has an X-ray diffraction pattern substantially as set forth in Table A of this specification. The gallosilicates may be used, whether or not impregnated and/or ion-exchanged, admixed, supported or bound for catalysing …

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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 August 19, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 19, 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 29, 1983
GrantedAugust 19, 1986
Term endedAugust 19, 2003
Patent numberCA 1209981 A
Classification (IPC)B01J21/06 +2 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedAug 29, 1983Patent grantedAug 19, 1986Term endedAug 19, 2003

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