Polymeric film or coating comprising hemicellulose
CA 2516612 C · Owner: Gatenholm, Paul · Inventors: Groendahl, Maria; Gatenholm, Paul; Bodin, Aase
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A film-forming composition and a polymeric film or coating comprising hemicellulose, having a molecular weight of less than 50 000 g/mol and at , least one component selected from the group consisting of plasticizers cellulose and a synthetic oligomer or polymer is disclosed. The use of said film or coating as an oxygen barrier is also disclosed. Further a method for , the manufacture of said polymeric film or coating is disclosed as well as a , method for improving the film-forming properties of hemicellulose having a molecular weight of less than 50 000 g/mol.
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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 March 18, 2004 and granted June 26, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 18, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 18, 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
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.