Aluminosilicates
CA 2175576 A1 · Owner: Edwards, Richard Barrie · Inventors: Edwards, Richard Barrie; Graham, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process for manufacturing an alkali metal aluminosilicate of zeolite P type wherein sodium silicate solution, sodium aluminate solution and sodium hydroxide are mixed together in a first reacting zone the mixture reacting to form amorphous aluminosilicate and supersaturated mother liquor and being then transferred from this first reacting zone to a second reacting zone the transferred mixture, having a degree of crystallinity below 30 % preferably 20 %, the mixture being afterwards allowed to fully convert into P type zeolite the, resulting product being eventually filtered washed and dried.
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 October 13, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 13, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 13, 2016.
- 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.