Cryogenic accumulator for spin-polarized xenon-129
CA 2250167 C · Owner: Happer, William · Inventors: Cates, Gordon D. Jr.; Walter, Daniel; Miron, Eli
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for accumulation of hyperpolarized 129X e is disclosed. The method and apparatus of the invention enable the continuous or episodic accumulation of flowing hyperpolarized 129Xe in frozen form. The method also permits the accumulation of hyperpolarized 129Xe. The invention further includes 129Xe accumulation means (17) which is integrated with 129Xe hyperpolarization means in a continuous or pulsed flow arrangement. The method and apparatus enable large scale production storage, and usage of , hyperpolarized 129Xe for numerous purposes including imaging of human and , animal subjects through magnetic resonance imaging (MRI) techniques.
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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 27, 1997 and granted May 7, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 27, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 27, 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
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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.