Magnetic resonance imaging coil
CA 2048019 C · Owner: London Health Sciences Centre · Inventors: Rutt, Brian K.; Vallet, Dale; Barberi, Enzo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A receive loop for use in magnetic resonance imaging, comprising: a collapsible imaging coil adapted to be inserted into a patient's body and expanded therein for receiving radio frequency signals emitted by the body, the coil being characterized by an inductive impedance; a quarter-wavelength transmission line connected to the coil, the imaging coil and transmission line in combination being characterized by a capacitive impedance; and apparatus connected to the transmission line remote from the imaging coil for tuning the combination coil and transmission line to resonate in response to the body emitting the radio frequency signals, whereby the radio frequency signals are received.
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 July 26, 1991 and granted October 17, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 26, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 26, 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.