Device and process for the production of fibrous starch materials
CA 2125977 C · Owner: Zanardi, Gino · Inventors: Bastioli, Catia; Casale, Bruno; Zanardi, Gino
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process and device for the production of fibrous starch materials through extrusion, of a dispersion or aqueous solution of starch material in a flow of saline coagulant; in, which the dispersion or aqueous solution is extruded through a microporous tubular wall, in a chamber circularly ringed with said microporous wall in such a way to obtain an ex-, trusion flux of the starch material which surrounds the said tubular walls and the coagula-, lion of the extrusion is carried out by feeding the flow of the coagulation agent in the an-, nular chamber parallel to the extrusion surface. The said obtained fibres in particular, have applications in the paper sector in substitution for or …
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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 October 11, 1993 and granted September 30, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 11, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 11, 2015.
- 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.