Radio frequency volume resonator for nuclear magnetic resonance
CA 2094714 A1 · Owner: Murphy-Boesch, Joseph · Inventors: Srinivasan, Ravi; Carvajal, Lucas; Murphy-Boesch, Joseph
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An RF resonator for use in NMR is mounted on a dielectric support sufficiently large to permit insertion of a patient's head. The resonator consists of four axially distributed high frequency ring current paths (56, 58, 59, 60) on the support (40) and at least four high frequency current paths (50) interconnect each pair of adjacent ring paths. In the preferred embodiment at least sixteen equally spaced parallel segments (50) connect each ring pair and are aligned with one another. The ring segments between the parallel segments together with the parallel segments form loops. At least one discrete capacitor (62, 64) is placed in each outer current loop thereby interrupting the loop. …
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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 10, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 10, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 10, 2013.
- 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.