Method for steckel mill operation
CA 2236440 C · Owner: Isg Technologies Inc. · Inventors: Bucher, John H.
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 Steckel mill roiling and finishing flat rolled steel having uniform mechanical properties, goad surface quality and ease of, flattening whether in coil form or discrete sheet or plate by hot rolling a heated, transfer bar in a Steckel mill and reverse rolling and optional coiling to achieve, finished flat rolled product of a selected thickness and selected austenite finishing temperature. The finished product is water cooled to a ferrite transformation temperature and thereafter air cooled until transformation from austenite to ferrite is at least 70% completed. The product may be further water cooled to a temperature below the ferrite transformation temperature.
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 April 30, 1998 and granted December 30, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 30, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 30, 2020.
- 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.