Method for suppressing internal oxidation in steel with antimony addition
CA 1187772 A · Owner: Inland Steel Company · Inventors: Lyudkovsky, Grigory
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cold rolled steel strip contains alloying elements such as Al and Si, which have an affinity for oxygen greater than that of iron. During annealing of the strip these, alloying elements undergo oxidation to form an internal oxidation layer adjacent the surface of the strip. Formation of such an internal oxidation layer in the cold rolled steel strip is impeded by adding antimony to the steel and depletion of the antimony prior to annealing the cold rolled strip is minimized by minimizing annealing and pickling of the strip before the strip attains substantially its final thickness.
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 May 28, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 28, 2002.
- 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.