Method and apparatus for production of a reinforcement bar
CA 2530470 C · Owner: As Spilka Industri · Inventors: Stafset, Kare
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for fabrication of a bent reinforcing rod in a composite material is described, where the reinforcing rod is composed of longitudinal fibres and a sheathing layer of fibres or foil, comprising the steps: to moisten fibre thread with a binding agent, to reel the moistened fibre thread to a bundle with a closed, approximately circular shape consisting of a layer of , longitudinal parallel fibres of a desired thickness whereby all the fibres , in the layer obtain an approximately equal axial tightening and to envelope , an outer layer of fibre threads and/or foil, or other suitable material around the layer of longitudinal fibres and that the fabricated blank is , given a final …
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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 June 23, 2004 and granted February 21, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 23, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 23, 2026.
- 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.