Hyperpolarized helium-3 microbubble gas entrapment methods
CA 2348032 A1 · Owner: Driehuys, Bastiaan · Inventors: Driehuys, Bastiaan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Methods for increasing the T1 of injectable microbubble formulations of hyperpolarized 3He include the step of introducing the hyperpolarized 3He to a quantity of microbubbles held in a chamber and increasing the pressure therein to facilitate the movement or loading of the 3He into the microbubbles. Subsequently, a limited quantity of carrier liquid or a carrier liquid solution alone, or pre-mixed with 3He, can be introduced to the microbubble/3He in the chamber to inhibit the tendency of the 3He to leach out of the bubble. Related pharmaceutical products and associated containers as well as an evacuation based method for rapid mixing and delivery of the bubbles and the 3He is …
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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 October 29, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 29, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 29, 2021.
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Timeline
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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.