Process for the removal of impurities in reacted alumina
CA 1185072 A · Owner: Flakt Aktiebolag · Inventors: Bockman, Ole K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process for the separation of fine dust which contains impurities from alumina. The contaminated alumina is firstly subjected to a disintegration step in order to liberate fine dust from the alumina and, then the purified alumina is selectively separated from the fine impurity-containing dust in a separation step.
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 April 9, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 9, 2002.
- 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.