Method for manufacturing fibre-reinforced material
CA 2016371 C · Owner: Borealis A/S · Inventors: Unger, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for impregnating fibre bundles with molten or liquid resin in manufacturing a fibre-reinforced material which material comprises one or more fibre bundles wherein, each fibre is surrounded by matrix resin by impregnating a, continuous web of one or more fibre bundles with molten or liquid resin and solidifying the resin by cooling or chemical reaction. During the impregnation the molten or liquid resin material is made subject to shear forces by bringing it between two closely nearby surfaces which are in moving relationship into each other.
Read the whole patent
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 9, 1990 and granted April 6, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 9, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 9, 2012.
- 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.