Iron runner
CA 2037648 A1 · Owner: Van Laar, Ir. Jacobus · Inventors: Van Laar, Ir. Jacobus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An iron runner for tapping molten crude iron from a blast furnace is proposed, comprising at least a wear lining which forms a boundary carrying the iron during operation and a permanent lining in which the wear lining is contained, an outer boundary and at least an outer lining with a high coefficient of thermal conductivity which is provided between the outer boundary and the permanent lining wherein, the outer lining is provided with a thickening in the direction of the wear lining, which thickening is applied at the level of the interface-layer being present during operation between the iron being carried through the runner and a slag layer floating on the iron. OA/01/A/19910206
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 March 6, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 6, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 6, 2013.
- 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.