Process for extruding a section or the like from an ingot and a device for that purpose
CA 2196372 C · Owner: Rotzinger, Gregor · Inventors: Hodel, Ulf; Ames, Adolf; Rotzinger, Gregor
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for extruding a section or the like body from an ingot (24) is such that an ingot (24) is introduced into a bore (22) of a container (18) and by means of an extrusion stem, (16), is fed in the direction of extrusion into a shape-giving opening in a die (32). Before the ingot enters the die opening, it is pushed out of the container (18) by an amount corresponding to the width (t) of a collar whereupon a disk-shaped slice (48) is sheared off the free end of the ingot and removed. The free end of the ingot (24) is then pushed onto the die opening. In order to carry out this process a shearing tool (38) is provided after the end (23a) of the container (18) facing the die (32) and a …
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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 30, 1997 and granted March 18, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 30, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 30, 2019.
- 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.