Parts subject to wear for containers for metal melts
CA 1076613 A · Owner: Didier-Werke A.G. · Inventors: Leupold, Hermann; Gelsdorf, Gunter; Schellberg, Franz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides in parts subject to wear coming in contact with a metal melt the improvement in which such parts are made of a hydraulically setting highalumina refractory concrete having a compression strength when cold, measured on the dried crude product of at least 400 kp/cm2, rising to at least 700 kp/cm2 after firing at 1400°C and a, dimensional stability at 1400°C of at least 0.2%.
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
- Granted April 29, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 29, 1997.
- 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.