Ladle for filtering liquid metal on a filter medium with improved heating
CA 2175073 C · Owner: Novelis, Inc. · Inventors: Clement, Guillaume
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A ladle for filtering liquid metal such as Al Mg or alloys thereof on a filter medium such as a gravel bed (2 3), comprising a first heater (6) located outside the bed and the liquid metal and a second heater (11), e.g. an immersion heater arranged in a liquid metal flow channel (8) adjacent the filter bed (2 3).
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
- Filed October 26, 1994 and granted October 15, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 26, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 26, 2016.
- 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.