Apparatus for continuously producing a high strength dual-phase steel strip or sheet
CA 1136852 A · Owner: Nippon Steel Corporation · Inventors: Sakurai, Koichi; Takechi, Hiroshi; Furukawa, Takashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for continuously producing a high strength dual-phase steel strip or sheet having a chemical composition which produces a dual-phase structure composed of ferrite grains and a low temperature transformed phase when rapidly cooled from the (.alpha. +.gamma.) temperature range or from the y temperature range. The apparatus has a continuous heat treatment furnace in which the strip moves vertically and which is composed of a heating zone a soaking zone, and a cooling zone, and conventional equipment associated therewith. The cooling zone has an upper hearth roll group a lower hearth roll group and cooling equipment for cooling the strip at a rate in the range between 1 and …
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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
- Granted December 7, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 7, 1999.
- 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.