Novel biomaterials, their preparation and use
CA 2484100 C · Owner: Szente, Lajos · Inventors: Schoch, Christian; Szejtli, Jozsef; Szente, Lajos
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 novel materials particularly biomaterials, in form of a precipitate comprising at least an anionic polymeric component which is as such soluble in water and an amphiphilic ammonium-type component which precipitate is obtainable by a process including the following steps: contacting the anionic polymeric component and an cylcodextrin component in an aqueous medium, and adding to the mixture obtained in step 1 said amphiphilic ammonium-type component, wherein said components are present in amounts effective to form said precipitate, and preferably to corresponding precipitates additionally comprising said cycxlodextrin component. Both types of …
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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 April 17, 2003 and granted January 3, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 17, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 17, 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.