Method of installing a refractory lining
CA 2175396 C · Owner: Connors, Charles W. Jr. · Inventors: Connors, Charles W. Jr.; Soofi, Madjid; Irwin, James S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method is provided for installing a, refractory lining in a metallurgical vessel having a main opening which is much smaller than the diameter of the vessel. The method is especially useful in a vessel having a circular or otherwise curved cross-section. A form or mold is assembled inside the vessel leaving a, space between the form and the outer shell of the vessel. The form is supported on both sides to maintain the, distance between the form and the outer shell and to, prevent collapse or implosion of the form. Then a, pumpable casting composition having a smooth and easy flow is injected between the form and the shell and, allowed to harden. The use of the pumpable composition …
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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 April 30, 1996 and granted August 31, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 30, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 30, 2018.
- 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.