Sidewall containment of liquid metal with horizontal alternating magnetic fields
CA 2084206 C · Owner: Arch Development Corporation · Inventors: Praeg, Walter F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for confining molten metal (12) with a horizontal alternating magnetic field. In particular this invention, employs a magnet (24) that can produce a horizontal alternating magnetic field to confine a molten metal (12) at the edges (30a 30b), of parallel horizontal rollers (10a 10b) as a solid metal sheet (18) is cast by counter-rotation of the rollers (10a 10b).
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 June 7, 1990 and granted March 30, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 7, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 7, 2012.
- 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.