Method for the cationisation of legume starches, cationic starches thus obtained and applications thereof
CA 2524481 C · Owner: Dobrogoszcz, Edmond · Inventors: Sabre, Philippe; Gombert, Herve; Dobrogoszcz, Edmond
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a novel solvent-free method for the cationisation of a legume starch. The invention also relates to the cationic starches of legume origin thus obtained. The invention further relates to the use of the cationic starches thus obtained originating from legumes, in the paper industry and in particular, in the wet end of a paper-making machine. In addition the invention relates to compositions, such as aqueous compositions containing at least one cationic starch of legume origin. Finally the invention relates to the folding carton or paper thus obtained containing at least one cationic starch originating from legumes.
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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 May 11, 2004 and granted September 17, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 11, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 11, 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.