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Expired Canadian patentCanada

Method for producing aluminosilicates, their use as catalysts and catalytic compositions containing them

CA 1136112 A · Owner: British Petroleum Company Limited (The) · Inventors: Ball, William J.; Stewart, David G.

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Abstract From the Canadian patent

Case 472?, ABSTRACT OF THE DISCLOSURE, Method for producing aluminosilicates their use as catalysts and catalytic, compositions containing them Crystalline aluminosilicates containing an organic nitrogen cation are prepared by mixing a source of silica a source of alumina, a source of alkali metal water and one or more substituted neopentylamines having the formula:-, wherein R2 is H OH or NH2 and R1 is a C1 to C6 alkyl group and, maintaining the mixture under conditions of elevated temperature and pressure, typically in the range from 80 to 210°C and 70 to 400 psig, for a time sufficient to effect formation of the aluminosilicate typically not less than 4 hours. The molar ratio of silica …

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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 November 23, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 23, 1999.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 5, 1979
GrantedNovember 23, 1982
Term endedNovember 23, 1999
Patent numberCA 1136112 A
Classification (IPC)B01J29/04 +2 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedDec 5, 1979Patent grantedNov 23, 1982Term endedNov 23, 1999

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