Reactive polymeric valve, dispensing devices and methods using same
CA 2386151 A1 · Owner: The Ohio State University · Inventors: Madou, Marc
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention includes polymeric valves and valve devices. The invention also includes machines or instruments using those aspects of the invention. Devices of the present invention include implantable devices with a sufficiently long lifetime that are responsive to the patient's therapeutic requirements and deliver a certain amount of a drug in response to a biological stimulus. The present invention includes methods and processes using the devices of the present invention.
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 October 12, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 12, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 12, 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.
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.