Catalytic cracking catalyst containing diatomaceous earth
CA 2014429 C · Owner: Akzo America Inc. · Inventors: Lam, Chiu Tin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A catalytic composite and its use in the fluidized catalytic cracking of hydrocarbons in the absence of added hydrogen. The composite comprises a binder material a, crystalline aluminosilicate, preferably a Y-type zeolite and diatomaceous earth. Optional ingredients are kaolin barium titanate and discrete particles of porous alumina. Absent from the composite is a supported catalytically active metal or metal oxide. The catalytic composite of the invention achieves higher gasoline production with lower coke production as compared to FCC catalysts with no diatomaceous earth content.
Read the whole patent
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
- Filed April 11, 1990 and granted October 6, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 11, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 11, 2012.
- 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
Timeline From CIPO dates
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.