Low viscosity aluminum hydroxy carbonate gel process
CA 1265724 C · Owner: Barcroft Company · Inventors: Casey, Robert B.; Heath, Wilbur G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process and system for the preparation of a low viscosity Aluminum Hydroxy Carbonate Gel having viscosity-resistant properties and a predetermined alkali ion content comprising, reacting under constant pH conditions an aqueous carbonate solution and an aqueous aluminum salt solution to form a reaction product, equilibrating the reaction product at naturally occurring pH and washing the equilibrated reaction product to provide the predetermined alkali ion content and the gel product by same processes.
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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
- Granted February 13, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 13, 2007.
- 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.