Method of installing a refractory lining
CA 2453363 C · Owner: Allied Mineral Products, Inc. · Inventors: Doza, Douglas K.; Opatt, William M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of installing a refractory lining in a coreless or channel electric induction furnace. For installation of a refractory lining in a furnace wall the method includes the steps of providing a dry refractory material between a liner form (32) placed within the furnace (50) and a furnace wall (72); placing at least one variable frequency/amplitude electric vibrator (10) in operational communication with an element selected from a structural member of the furnace (50), the liner form (32), and a vibrator rig (30) placed within the furnace (50); inducing flow of the dry refractory material by operating at least one variable frequency/amplitude vibrator (10) in a first operational …
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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
- Filed July 18, 2002 and granted April 17, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 18, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 18, 2024.
- 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.