Joo W Kim

US Patent:

20070202321, Aug 30, 2007

Filed:

Nov 9, 2005

Appl. No.:

11/272332

Inventors:

Seung Mun You - Arlington TX, US
Joo Han Kim - Fort Worth TX, US

Assignee:

Board of Regents, The University of Texas System - Austin TX

International Classification:

B32B 5/16

US Classification:

428328000

Abstract:

A microporous surface is created using particles of various sizes in conjunction with a thermally conductive binder. Advantages to a mixture batch type application of the coating include that it is an inexpensive and easy process which does not require extremely high operating temperatures. The disclosed coating technique is efficient for various types of working liquids simply by changing the size of metal particle sizes since different surface tension of liquids requires different size range of porous cavities to optimize boiling heat transfer performance. In one embodiment, the coating is applied to an electronic component surface.

US Patent:

20080236795, Oct 2, 2008

Filed:

Mar 26, 2007

Appl. No.:

11/690937

Inventors:

Seung Mun You - Arlington TX, US
Joo Han Kim - Arlington TX, US
Sang M. Kwark - Grand Prairie TX, US
Jesse Jaejin Kim - Sunnyvale CA, US

International Classification:

H05K 7/20

US Classification:

16510421, 361700

Abstract:

Systems and fabrication methods are disclosed for a heat spreader to cool a device. The heat spreader has first and second opposing proximal surfaces defining a chamber having a liquid therein; and one or more structures mounted in the chamber to induce a liquid flow pattern during a boiling of the liquid to distribute heat.

US Patent:

20130020053, Jan 24, 2013

Filed:

Jun 6, 2012

Appl. No.:

13/489697

Inventors:

Seung Mun You - Arlington TX, US
Joo Han Kim - Arlington TX, US
Sang M. Kwark - Grand Prairie TX, US
Jesse Jaejin Kim - Sunnyvale CA, US

International Classification:

F28D 15/02
F28F 13/18

US Classification:

16510421, 16510429, 165133

Abstract:

Systems and fabrication methods are disclosed for a heat spreader to cool a device. The heat spreader has first and second opposing proximal surfaces defining a chamber having a liquid therein; and one or more structures mounted in the chamber to induce a liquid flow pattern during a boiling of the liquid to distribute heat.

US Patent:

45882320, May 13, 1986

Filed:

Sep 7, 1984

Appl. No.:

6/648906

Inventors:

Joo H. Kim - Alvin TX
Rack K. Choi - Inchoen City, KR

International Classification:

B60B 2700
B60B 3500

US Classification:

301 1

Abstract:

Disclosed is an apparatus for varying eccentrically or centrically the shaft of the bicycle wheel in order that the bicycle can run up and down wavy manner like horseback riding beside regular level riding. The apparatus has an eccentric hub including a shaft housing formed integrally in eccentric position between two hub discs having a plurality of notches corresponding to different eccentricities of the shaft and a shaft penetrated through said shaft housing, two circular supporting plates having a slot for locking and two cover plates so that each hub discs of the eccentric hub is rotatively mounted relatively between each hub disc housings of the circular supporting plates and each cover plates and can be rotated to adjust the eccentricity of the shaft, and a locking means fixed on said circular supporting plate for setting the hub disc in the selected eccentricity of the shaft by matching it with any one of the notches through the slot.

US Patent:

46028226, Jul 29, 1986

Filed:

Sep 7, 1984

Appl. No.:

6/648907

Inventors:

Joo H. Kim - Alvin TX
Rack K. Choi - Nam-ku, Inchoen City, Kyungkido, KR

International Classification:

B60B 2700
B62M 100

US Classification:

301 1

Abstract:

Disclosed is an apparatus for varying eccentrically or centrically the shaft of the bicycle wheel in order that the bicycle can run up and down like horseback riding beside regular level riding. The apparatus has an eccentric hub including a shaft housing formed integrally in eccentric position between two hub discs having an opening and a shaft penetrated through said shaft housing, two circular supporting plates coupled rigidly each other by three connecting rods to reserve revolvably said eccentric hub therebetween, each which has a hub disc housing formed in its eccentric position said hub disc housing has a relatively large hole on its centric portion to exposure the shaft and also a plurality of openings corresponding to different eccentric positions on its circumference of circle, and a resettable spring loaded rod for locking the eccentric hub between the hub disc housings of the circular supporting plates by passing through the openings in alignment with each other.