Inseob Hahn from Pasadena, CA, age 61

Low Field Squid Mri Devices, Components And Methods
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US Patent:

8008914, Aug 30, 2011
Filed:

Jan 13, 2010
Appl. No.:

12/687104
Inventors:

Konstantin I. Penanen - Glendale CA, US
Byeong H. Eom - Pasadena CA, US
Inseob Hahn - La Crescenta CA, US
Assignee:

California Institute of Technology - Pasadena CA
International Classification:

G01V 3/00
US Classification:

324300, 324306
Abstract:

Low field SQUID MRI devices, components and methods are disclosed. They include a portable low field (SQUID)-based MRI instrument and a portable low field SQUID-based MRI system to be operated under a bed where a subject is adapted to be located. Also disclosed is a method of distributing wires on an image encoding coil system adapted to be used with an NMR or MRI device for analyzing a sample or subject and a second order superconducting gradiometer adapted to be used with a low field SQUID-based MRI device as a sensing component for an MRI signal related to a subject or sample.

Low Field Electron Paramagnetic Resonance Imaging With Squid Detection
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US Patent:

8179135, May 15, 2012
Filed:

Jan 26, 2009
Appl. No.:

12/359576
Inventors:

Inseob Hahn - La Crescenta CA, US
Peter K. Day - Pasadena CA, US
Konstantin I. Penanen - Glendale CA, US
Byeong H. Eom - Pasadena CA, US
Mark S. Cohen - Calabasas CA, US
Assignee:

California Institute of Technology - Pasadena CA
The Regents of the University of California - Oakland CA
International Classification:

G01V 3/00
US Classification:

324307, 324309
Abstract:

In one embodiment, a flux transformer with a gradiometer pickup coil is magnetically coupled to a SQUID, and a SQUID array amplifier comprising a plurality of SQUIDs, connected in series, is magnetically coupled to the output of the SQUID. Other embodiments are described and claimed.

Low Field Squid Mri Devices, Components And Methods
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US Patent:

8487623, Jul 16, 2013
Filed:

Apr 20, 2011
Appl. No.:

13/090931
Inventors:

Konstantin I. Penanen - Glendale CA, US
Byeong H. Eom - Pasadena CA, US
Inseob Hahn - La Crescenta CA, US
Assignee:

California Institute of Technology - Pasadena CA
International Classification:

G01V 3/00
G01R 33/48
US Classification:

324318, 324300, 324322
Abstract:

Low field SQUID MRI devices, components and methods are disclosed. They include a portable low field (SQUID)-based MRI instrument and a portable low field SQUID-based MRI system to be operated under a bed where a subject is adapted to be located. Also disclosed is a method of distributing wires on an image encoding coil system adapted to be used with an NMR or MRI device for analyzing a sample or subject and a second order superconducting gradiometer adapted to be used with a low field SQUID-based MRI device as a sensing component for an MRI signal related to a subject or sample.

Low Field Squid Mri Devices, Components And Methods
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US Patent:

20090072828, Mar 19, 2009
Filed:

Apr 30, 2008
Appl. No.:

12/113130
Inventors:

Konstantin I. PENANEN - Glendale CA, US
Byeong H. Eom - Pasadena CA, US
Inseob Hahn - La Crescenta CA, US
International Classification:

G01R 33/32
US Classification:

324318, 505162
Abstract:

Low field SQUID MRI devices, components and methods are disclosed. They include a portable low field (SQUID)-based MRI instrument and a portable low field SQUID-based MRI system to be operated under a bed where a subject is adapted to be located. Also disclosed is a method of distributing wires on an image encoding coil system adapted to be used with an NMR or MRI device for analyzing a sample or subject and a second order superconducting gradiometer adapted to be used with a low field SQUID-based MRI device as a sensing component for an MRI signal related to a subject or sample.

Geometries For Superconducting Sensing Coils For Squid-Based Systems
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US Patent:

20090322324, Dec 31, 2009
Filed:

Apr 30, 2008
Appl. No.:

12/113163
Inventors:

Konstantin I. PENANEN - Glendale CA, US
Byeong H. Eom - Pasadena CA, US
Inseob Hahn - La Crescenta CA, US
International Classification:

G01R 33/02
US Classification:

324248
Abstract:

Geometries for superconducting sensing coils for SQUID-based systems are described, such as a superconducting sensing coil with a flat washer shape the inner diameter of which has an extension which is a small fraction of the extension of the outer diameter. Also described are a second-order gradiometer comprising such coils and a superconducting sensing coil structure comprising an external low-melting point metallic loop encapsulating one or more superconductive coil loops, together with a heterogeneous superconductive sensing wire for gradiometers, consisting of an internal copper skeleton surrounded by an external lead-tin alloy.

Low Field Squid Mri Devices, Components And Methods
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US Patent:

20130271142, Oct 17, 2013
Filed:

Jun 12, 2013
Appl. No.:

13/916514
Inventors:

Byeong H. EOM - Pasadena CA, US
Inseob HAHN - La Crescenta CA, US
International Classification:

G01R 33/38
US Classification:

324320
Abstract:

Low field SQUID MRI devices, components and methods are disclosed. They include a portable low field (SQUID)-based MRI instrument and a portable low field SQUID-based MRI system to be operated under a bed where a subject is adapted to be located. Also disclosed is a method of distributing wires on an image encoding coil system adapted to be used with an NMR or MRI device for analyzing a sample or subject and a second order superconducting gradiometer adapted to be used with a low field SQUID-based MRI device as a sensing component for an MRI signal related to a subject or sample.

Methods And Devices For Cleaning Dust From A Surface
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US Patent:

20230043866, Feb 9, 2023
Filed:

Aug 5, 2022
Appl. No.:

17/881880
Inventors:

- Denver CO, US
- Pasadena CA, US
- Iowa City IA, US
Inseob Hahn - Glendale CA, US
Ulf Israelsson - Altadena CA, US
John Goree - Iowa City IA, US
International Classification:

B08B 6/00
Abstract:

Disclosed herein are methods and devices for cleaning a surface of a substrate having a layer of dust disposed thereon by ejecting at least a portion of the dust from the surface. The methods comprise irradiating the layer of dust with an electron beam, such that the electron beam irradiates a particle thereby inducing said particle to emit a plurality of secondary electrons; wherein at least a portion of the plurality of secondary electrons impinge two or more neighboring particles to thereby generate a secondary charge on the two or more neighboring particles, wherein the secondary charge on the two or more neighboring particles creates an electrostatic repulsive force between said particles, wherein the electrostatic repulsive force is sufficient to eject said particles from the surface.