Synthetic dioctahedral smectite clays
CA 2091046 A1 · Owner: Holmgren, Jennifer S. · Inventors: Holmgren, Jennifer S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
SYNTHETIC DIOCTAHEDRAL SMECTITE CLAYS" ABSTRACT, A novel synthetic dioctahedral smectite layered clay a process for preparing, the clay and a process using the clay is disclosed. The clays that are prepared are gallium/silicon, gallium/germanium, or aluminum/germanium smectite clays. The clay is prepared from a reaction mixture containing reactive sources of the metals i.e. aluminum, silicon, gallium and germanium a templating agent and water. This, reaction mixture is reacted at a pH of 8.5 to 14 a temperature of 150 to 210°C for a, time of 1 to 20 days to give a desired composition. The clay compositions of theinstant invention can be used to catalyze various hydrocarbon conversion …
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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
- Filed March 4, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 4, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 4, 2015.
- 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.