A method for the manufacture of layered metal product slabs and layered metal product slabs
CA 2431481 A1 · Owner: Rajamaki, Kauko · Inventors: Rajamaki, Kauko; Lind, Ari; Koskinen, Taisto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for the production of a layered metal slab by casting which strip , contains a central layer (2) and surface layers (3) oneither side of it. The central layer (2) is introduced as a stripthrough a mould (4) into which is , introduced molten metal (5) the mould (4) is cooled, whereupon a layered structure (1) is formed as the metal solidifies.
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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 December 11, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 11, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 11, 2023.
- 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.