Chitosan drug delivery system
CA 2228251 A1 · Owner: Podolski, Joseph S. · Inventors: Hsu, Kuang T.; Singh, Gurpreet; Podolski, Joseph S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates generally to a novel drug delivery composition. More specifically, the invention relates to a drug delivery compositions comprising an iron/chitosan particulate in combination with a desired drug a , chitosan-formulated drug compound, or chitosan/oil-surfactant in combination with a desired substance. The invention also contemplates methods for drug delivery involving the compositions as well as methods for producing the compositions.
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 June 11, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 11, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 11, 2019.
- 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.