Method and device for continuous annealing metallic ribbons
CA 2489201 C · Owner: Tyco Fire & Security Gmbh · Inventors: Lian, Ming-Ren; Herzer, Giselher; Hartmann, Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A thin metallic ferromagnetic alloy ribbon is annealed by continuously transporting it through an oven in order to induce specific magnetic characteristics and in order to remove a production-inherent longitudinal curvature of the ribbon. While the heat-treatment occurs the ribbon is guided , by a channel in a substantially straight annealing fixture. The channel is characterized by slight curvatures along portions of its length in particular , where the ribbon enters into the annealing oven. The curved channel provides an improved thermal contact between the ribbon and the heat reservoir. As a consequence the process can be conducted at particularly high annealing speeds without …
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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 May 15, 2003 and granted April 10, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 15, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 15, 2025.
- 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
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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.