Materials containing multiple layers of vesicles
CA 2472782 A1 · Owner: Novartis Ag · Inventors: Lally, John Martin; Kotov, Nicholas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a composite material preferably an opthalmic , device, more preferably a contact lens which comprises a vesicle-containing , coating including at least one layer of a vesicle and one layer of a polyionic material having charges opposite the charges of the vesicle. Such composite material can find use in biomedical applications for example, a device for , localized drug delivery and an in vivo analyte sensor such as glucose sensing contact lens. By lifting off the vesicle-containing coating from a substrate a self-standing membrane (film) capable of encapsulating a wide variety of guest materials can be prepared. In addition the invention provides methods , …
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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 March 12, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 12, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 12, 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.