Chris Allen

US Patent:

D487894, Mar 30, 2004

Filed:

Oct 18, 2002

Appl. No.:

29/169502

Inventors:

Chris Allen - Brooklyn NY 11201
David Bonalle - New Rochelle NY 10804
Jennifer Elwood - New York NY 10028
Ronald Guillard - Dallas TX 75209
Jeff Kohnle - McKinney TX 75070
VC Kumar - Garland TX 75044
Douglas N. Laube - Farmersville TX 75442
Stephen R. Myers - Allen TX 75013
Judy Vigiletti - Croton on Hudson NY 10520

International Classification:

1402

US Classification:

D14385

US Patent:

D488156, Apr 6, 2004

Filed:

Oct 18, 2002

Appl. No.:

29/169465

Inventors:

Chris Allen - Brooklyn NY 11201
David Bonalle - New Rochelle NY 10804
Jennifer Elwood - New York NY 10028
Ronald Guillard - Dallas TX 75209
Jeff Kohnle - McKinney TX 75070
VC Kumar - Garland TX 75044
Douglas N. Laube - Farmersville TX 75442
Stephen R. Myers - Allen TX 75013
Judy Vigiletti - Croton on Hudson NY 10520

International Classification:

1402

US Classification:

D14385

US Patent:

D497636, Oct 26, 2004

Filed:

Nov 14, 2002

Appl. No.:

29/171118

Inventors:

Chris Allen - Brooklyn NY
David Bonalle - New Rochelle NY
Jennifer Elwood - New York NY
Ronald Guillard - Dallas TX
Jeff Kohnle - McKinney TX
VC Kumar - Garland TX
Douglas N. Laube - Farmersville TX
Stephen R. Myers - Allen TX
Judy Vigiletti - Croton on Hudson NY

Assignee:

American Express Travel Related Services Company, Inc. - New York NY

International Classification:

1908

US Classification:

D19 10

US Patent:

D497911, Nov 2, 2004

Filed:

Oct 18, 2002

Appl. No.:

29/169503

Inventors:

Chris Allen - Brooklyn NY
David Bonalle - New Rochelle WY
Jennifer Elwood - New York NY
Ronald Guillard - Dallas TX
Jeff Kohnle - McKinney TX
VC Kumar - Garland TX
Douglas N. Laube - Farmersville TX
Stephen R. Myers - Allen TX
Judy Vigiletti - Croton on Hudson NY

Assignee:

American Express Travel Related Services Company, Inc. - New York NY

International Classification:

1402

US Classification:

D14385

US Patent:

D510384, Oct 4, 2005

Filed:

Oct 18, 2002

Appl. No.:

29/169501

Inventors:

Chris Allen - Brooklyn NY, US
David Bonalle - New Rochelle NY, US
Jennifer Elwood - New York NY, US
Ronald Guillard - Dallas TX, US
Jeff Kohnle - McKinney TX, US
VC Kumar - Garland TX, US
Douglas N. Laube - Farmersville TX, US
Stephen R. Myers - Allen TX, US
Judy Vigiletti - Croton on Hudson NY, US

International Classification:

1001

US Classification:

D19 10

US Patent:

20190331744, Oct 31, 2019

Filed:

Apr 18, 2019

Appl. No.:

16/387800

Inventors:

- Mayfield Village OH, US
Chris Allen - Euclid OH, US
Tsinghua Zheng - Chesterland OH, US
Haoqin Zhu - Mayfield Village OH, US

International Classification:

G01R 33/34
G01R 33/36
G01R 33/385

Abstract:

Embodiments relate to birdcage coils with in-plane open RF shielding capable of operating at 7T and higher field strength. One example embodiment comprises a first birdcage circuit and second birdcage circuit, each comprising two rings, N rungs that electrically connect the two rings of that circuit, a plurality of capacitors in the first birdcage circuit to form a first birdcage coil, and an optional plurality of capacitors in the second birdcage circuit to form a second birdcage coil when included or a non-resonant RF shield when omitted, wherein the first birdcage circuit is electrically isolated from the second birdcage circuit, wherein the first birdcage circuit and the second birdcage circuit have a common cylindrical axis, and wherein the N rungs of the second birdcage circuit are azimuthally rotated through a first angle relative to the N rungs of the first birdcage circuit.

US Patent:

20170146622, May 25, 2017

Filed:

Oct 31, 2016

Appl. No.:

15/339107

Inventors:

- Mayfield Village OH, US
Chris Allen - Euclid OH, US

International Classification:

G01R 33/36
G01R 33/34

Abstract:

Example apparatus and magnetic resonance imaging (MRI) radio frequency (RF) coils concern controlling current magnitude at different sections in one MRI RF coil. In one embodiment, an MRI RF coil comprises a plurality of loop coils configured to transmit or receive an RF signal. A member of the plurality of loop coils comprises an inductor and at least one capacitor. The MRI RF coil further comprises at least one coaxial transmission line that electrically couple in series a first member of the plurality of loop coils with a second, different member of the plurality of loop coils. The at least one coaxial transmission line has a length that is one-quarter wavelength (λ/4) of the RF signal, or an odd integer multiple of λ/4 of the RF signal.