Electricity: measuring and testing – Particle precession resonance – Spectrometer components
Reexamination Certificate
2007-07-13
2009-12-29
Arana, Louis M (Department: 2831)
Electricity: measuring and testing
Particle precession resonance
Spectrometer components
C324S320000, C335S302000, C335S304000
Reexamination Certificate
active
07639013
ABSTRACT:
With a view toward implementing a thermal controlling method for making reversible a temperature characteristic of a magnetic field generator using permanent magnets small in Hcj, a magnetic field generator whose temperature characteristic is reversible, using permanent magnets small in Hcj, and an MRI apparatus provided with such a magnetic field generator, there is provided a method for controlling the temperature of a magnetic field generator having a pair of disc-shaped permanent magnets whose magnetic poles opposite in polarity to each other are opposed to each other with spacing defined therebetween, and a yoke that forms return passes for magnetic fluxes of the permanent magnets, comprising the steps of raising the temperature from room temperature to a temperature higher than the room temperature, maintaining the temperature higher than the room temperature, and lowering the temperature from the temperature higher than the room temperature to the room temperature, whereby the temperature characteristics of the permanent magnets are made reversible.
REFERENCES:
patent: 3325757 (1967-06-01), Gang
patent: 4456898 (1984-06-01), Frischmann
patent: 6275128 (2001-08-01), Aoki et al.
patent: 6297634 (2001-10-01), Aoki
patent: 6313632 (2001-11-01), Aoki et al.
patent: 6340888 (2002-01-01), Aoki et al.
patent: 6403956 (2002-06-01), Sinha
patent: 6809519 (2004-10-01), Higuchi
patent: 6809619 (2004-10-01), Xu et al.
patent: 6967551 (2005-11-01), Natsumeda et al.
patent: 7034536 (2006-04-01), Higuchi
patent: 7084633 (2006-08-01), Aoki et al.
patent: 2005/0128036 (2005-06-01), Doi et al.
patent: 1626033 (2005-06-01), None
patent: 2000287950 (2000-10-01), None
Hua Yihe
Liu Liang
Shen Weijun
Tan Fengshun
Arana Louis M
Armstrong Teasdale LLP
GE Medical Systems Global Technology Company LLC
LandOfFree
Thermal controlling method, magnetic field generator and MRI... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Thermal controlling method, magnetic field generator and MRI..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermal controlling method, magnetic field generator and MRI... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4077382