Synthesis of faujasite
CA 2032845 A1 · Owner: Mobil Oil Corporation · Inventors: Mcwilliams, John P.; Kuehl, Guenter H.; Mccullen, Sharon B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a method for preparing faujasite, a gel is formed comprising a mixture of water, alkali metal aluminate and alkali metal silicate. The gel is then broken by subjecting the gel to high shear agitation to convert the gel to a homogeneous, pourable mixture. The resultant mixture is then aged for at least 6 hours at a temperature of at least 15°C before being crystallized to produce faujasite in the form of platelets having a particle size of 0.1 microns or less.
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 December 20, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 20, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 20, 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.