Preparative process for alkaline earth metal, aluminum-containing spinels
CA 1201699 A · Owner: W.R. Grace & Co.-Conn. · Inventors: Karch, John A.; Poss, Richard F.; Yoo, Jin S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved process for the production of alkaline earth aluminum-containing spinel compositions preferably magnesium, aluminum-containing spinel compositions and at least one additional metal component, comprises combining alkaline earth metal, aluminum and additional metal components at selected pH conditions to form a precipitate and calcining the precipitate to form a spinel composition. The product spinel composition is, particularly suited for use to reduce the amount of sulfur oxides emitted from a catalyst regeneration zone e.g. a catalytic, cracking unit regeneration zone.
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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 March 11, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 11, 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.
Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.