Crystalline 3-layer lithium aluminates
CA 1267494 C · Owner: The Dow Chemical Company · Inventors: Burba, John Leslie, Iii
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Ion exchange resins in the base form (e.g. DOWEX?MWA-1-OH ion exchange resin) which contain crystalline A1(OH)3 (e.g. gibbsite, and/or bayerite and/or norstrandite) are treated with hot concen-, trated LiX aqueous solutions (where X is anion) to prepare 3-layer crystalline LiX?Al(OH)3?nH20 in the resin. :::, 29,854-F
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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 April 3, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 3, 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.