Papermaking process and composition for the production of tridimensional products containing thermoplastics resin and reinforcing fibers
CA 1286060 C · Owner: Goguelin, Michel · Inventors: Fredenucci, Pierre; Gerault, Patrice; Goguelin, Michel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The process for producing a tridimensional piece from an aqueous suspension containing at least a thermoplastic resin and reinforcing fibers, comprises the following steps: a) the elements of the suspension are wet-molded into a preform in a mold, said preform having, in the three dimensions the, general outline of the final piece; b) the preform is then at least partly de-watered; c) then the preform is pre-heated to a temperature higher than the melting point of the thermoplastic resin; d) the preform is then molded under pressure into its final shape in a press heated to a temperature below the melting point of the thermoplastic resin.
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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
- Granted July 16, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 16, 2008.
- 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.