Starch derived shaped articles
CA 2054202 C · Owner: Goodman Fielder Wattie Australia Limited · Inventors: Knight, Adrian Timothy
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a method of producing starch derived shaped articles and in particular, a method of producing films derived from high amylose starch. In the method a hot melt is prepared , by heating under pressure a composition comprising a high amylosic material, or a derivative thereof and sufficient , water to provide a homogeneous melt for subsequent extrusion as a shaped article. The hot melt is subjected to an atmospheric or subatmospheric pressure immediately prior to or during extrusion so as to remove water from the hot melt prior to the formation of the shaped article. Preferably, the high amylosic material is derived from Goodman Fielder Mills Pty. Limited maize …
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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 1, 1990 and granted August 15, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 1, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 1, 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.