Synergistic compositions of polysaccharides as natural and biodegradable absorbent materials or superabsorbents
CA 2426478 C · Owner: Bergeron, David · Inventors: Bergeron, David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to multi-component synergistic absorbent compositions comprising at least one polysaccharide and at least one or more polysaccharide-based components or gelling proteins. These compositions possess synergistic effects in their capacity to absorb water saline solutions and biological fluids at normal pressure or under load, or to retain these fluids or a combination of these properties.
Read the whole patent
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 April 24, 2003 and granted June 21, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 24, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 24, 2025.
- 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.