Method of continuously hot rolling steel pieces
CA 2199872 C · Owner: Imae, Toshio · Inventors: Uemura, Koichi; Takebayashi, Katsuhiro; Tamai, Yoshikiyo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A stable continuous hot rolling method which extremely lessens dislocation produced upon application of a high frequency induction heating of the transverse type for joining billets and eliminates plate breakage by individually cutting a rear end of a leading billet and a front end of a trailing billet by means of two pairs of cutting blades one pair of which is , arranged such that front faces of the blades are opposite in direction to each other on both sides of the billet and the other pair of which is arranged such that front faces of the blades are reversed in direction to those of the blades of the one pair, while conveying the respective billets in the same direction when the …
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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
- Filed January 12, 1996 and granted April 18, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 12, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 12, 2018.
- 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.