Process of producing aluminum and titanium nitrides
CA 1329461 C · Owner: Alcan International Limited · Inventors: Nadkarni, Sadashiv K.; Jain, Mukesh K.; Gesing, Adam
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract:, The invention relates to a process of producing nitrides of aluminum and titanium. The process involves producing a uniform dispersion of microfine particles of the corresponding metal oxide in an infusible polymer carbonizing the resulting dispersion in a non-oxidizing atmosphere and heating the carbonized product in a nitrogen atmosphere at high temperature to cause the oxide to react with the carbon and nitrogen to form the nitride. Before carbonization however, the dispersion is formed, into shapes in which none of the oxide particles is more than about 2.5 mm from an external surface and the shapes are loosely packed in a reactor. The process can achieve a good conversion of …
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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 May 17, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 17, 2011.
- 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.