Temperature-sensitive polymer/nanoshell composites for photothermally modulated drug delivery
CA 2379357 C · Owner: Oldenburg, Steven J. · Inventors: Sershen, Scott R.; Oldenburg, Steven J.; West, Jennifer L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A thermally sensitive polymer-particle composite (10) that absorbs electromagnetic radiation and uses the absorbed energy to , trigger the delivery of a chemical (20) is disclosed. Metal nanoshells (16) are nanoparticulate materials that are suitable for use in the present composites (10) and can be made according to a process that includes optically tuning or tailoring their maximum optical absorption to any de-sired wavelength primarily by altering the ratio or the core diameter to the shell thickness. Preferred nanoshells (16) are selected that strongly absorb light in the near-infrared and thus produce heat. These nanoshells (16) are combined with a temperature-sensitive …
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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 July 14, 2000 and granted March 22, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 14, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 14, 2022.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.