Alkaline earth metal spinels and processes for making and using same
CA 1314276 C · Owner: Woltermann, Gerald Martin · Inventors: Woltermann, Gerald Martin; Bhattacharyya, Alakananda; Cormier, William Edward, Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the production of an alkaline earth metal, aluminum-containing spinel composition comprises: (a) combining (1) an acidic aluminum-containing composition in which the aluminum is present in a positively charged species and (2) a basic, alkaline earth metal-containing composition to form a mixture; and (b) calcining the mixture to form the alkaline earth metal aluminum-containing spinel composition. Alkaline earth metal, aluminum-containing spinels having both high surface areas and high attrition resistance and processes for using spinel compositions e.g. as sulfur oxide and nitrogen oxide removal agent are also disclosed.
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 March 9, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 9, 2010.
- 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.