PRECIPITATING .alpha. ALUMINA MONOHYDRATE
CA 1065581 A · Owner: Pq Corporation · Inventors: Hertzenberg, Elliot P.; Derolf, Mahlon R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Dispersible colloidal particles of .alpha. -alumina monohydrate are prepared by conditioning aqueous solutions of an aluminum salt with a water miscible organic solvent and then precipitating alumina with an aqueous solution of base. The reaction mixture is agitated and heated filtered, washed, and dried to obtain the product. Dispersions of the product can be used for ?ooking paper to provide antiskid properties while the solid product can be used as a catalyst.
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
- Granted November 6, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 6, 1996.
- 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.