In situ formed anionic clay-containing bodies
CA 2437604 A1 · Owner: Akzo Nobel Nv · Inventors: O'Connor, Paul; Stamires, Dennis; Jones, William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is directed to a process for the preparation of crystalline anionic clay-containing bodies from sources comprising a trivalent metal source and a divalent metal source comprising the steps of: a) preparing a precursor mixture containing a liquid a divalent metal source and/or a , trivalent metal source at least one of them being insoluble in the liquid; b) shaping the precursor mixture to obtain shaped bodies; c) optionally thermally treating the shaped bodies; and d) aging the shaped bodies to obtain crystalline anionic clay-containing bodies; with the proviso that if no trivalent metal source is present in the precursor mixture of step a) such , source is …
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 January 29, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 29, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 29, 2024.
- 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.