Hot rolling method and apparatus for hot rolling
CA 1264646 C · Owner: Ono, Takeshi · Inventors: Kawamura, Kunio; Ono, Takeshi; Matsui, Kenichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hot rolling method wherein portions of a, hot-rolled steel material having suffered a temperature fall below Ar3 transformation temperature thereof during hot rolling are subjected to an intermediate heating to have a temperature not less than Ac3 transformation temperature before the steel material is finally finishhot-rolled, whereby a resultant hot-rolled product can have a superior uniform structure without duplex structure and apparatus for effecting the method.
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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 January 23, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 23, 2007.
- 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.