Eun Young Kim

US Patent:

6857501, Feb 22, 2005

Filed:

Sep 21, 2000

Appl. No.:

10/089008

Inventors:

Eun Sok Kim - Torrance CA, US

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

H04R007/00
H04R031/00

US Classification:

181158, 181164, 181167, 381173, 381190, 381191, 381423, 381426, 29594, 216 2, 216 99

Abstract:

A micromachined acoustic transducer comprising a parylene diaphragm piezoelectric transducer. The parylene diaphragm has far lower stiffness than the silicon nitride. The method for fabricating the parylene diaphragm acoustic transducer utilizes a prestructured disphragm layer utilizing silicon nitride which is compatible with high temperature semiconductor process. A silicon nitride layer is patterned and partially removed after forming the parylene diaphragm layer in order to enhance the structural qualities of the parylene diaphragm. The diaphragm may be flat or dome-shaped.

US Patent:

D513093, Dec 20, 2005

Filed:

Sep 15, 2004

Appl. No.:

29/213296

Inventors:

Eun Suk Kim - Garden Grove CA, US

International Classification:

2803

US Classification:

D28 59

US Patent:

7224132, May 29, 2007

Filed:

Jan 22, 2004

Appl. No.:

10/761313

Inventors:

Chahee Peter Cho - Centreville VA, US
Eun S. Kim - Centreville VA, US

Assignee:

Wavecrest Laboratories, LLC. - Rochester Hills MI

International Classification:

H02P 1/00

US Classification:

318139, 290 9, 290 17, 320136, 320149, 180 651

Abstract:

A portable range extender is provided for an electric vehicle having a vehicle controller, and an electric traction motor powered by a battery. The portable range extender has an engine, a dynamoelectric machine coupled to the engine by a shaft and electrically connectable to the vehicle, and a range extender controller for controlling operations of the range extender independently of the vehicle controller. The range extender controller monitors voltage of the battery to automatically activate the range extender when the battery voltage is less than a first threshold value and automatically deactivate the range extender when the battery voltage reaches a second threshold value. The dynamoelectric machine operates as a motor for starting the engine when the battery voltage is less than the first threshold value. In response to prescribed engine conditions, the range extender controller operates the dynamoelectric machine as a generator driven by the engine to generate electric power supplied to the vehicle.

US Patent:

7332127, Feb 19, 2008

Filed:

Jul 11, 2002

Appl. No.:

10/194996

Inventors:

Eun Sok Kim - Torrance CA, US
Jae Wan Kwon - Los Angeles CA, US

Assignee:

University of Southern California - Los Angeles CA

International Classification:

B01L 3/02

US Classification:

422100, 422 63, 422 65

Abstract:

A DNA probe synthesis system may include a target holder for holding a target chip, an ejector array chip, a wash and dry station, and conveyance means for moving the target holder and the chip between the ejector array chip and the wash and dry station. The ejector array chip may include ejectors, reservoirs for containing DNA bases, and microchannels all on the same substrate. The ejectors may be Self Focusing Acoustic Transducers (SFATs).

US Patent:

7449793, Nov 11, 2008

Filed:

Feb 18, 2004

Appl. No.:

10/779600

Inventors:

Chahee Peter Cho - Centreville VA, US
Eun Shik Kim - Centreville VA, US

Assignee:

Bluwav Systems, LLC - Rochester Hills MI

International Classification:

F02B 63/04
H02K 7/18
F02D 29/06
H02P 9/04

US Classification:

290 1A, 290 40 B

Abstract:

A portable range extender can be used to supply electrical power to an electric vehicle operable by an electric traction motor. The portable range extender includes an engine, a dynamoelectric machine coupled to the engine by a shaft, an autonomous range extender controller for controlling operations of the range extender independently of a controller for the vehicle, and circuitry associated with the engine and machine. To start operation, electrical energization is applied from the vehicle battery to the dynamoelectric machine for operation as a motor to drive the shaft. As the shaft accelerates, the rotational speed of the shaft and the temperature of the engine are sensed. When the speed and temperature obtain predetermined thresholds, fuel is supplied to the engine and ignition is activated. The engine then operates as a prime mover to drive the shaft in lieu of the machine. After a period of engine prime mover operation, the machine is activated for operation as a generator to provide an electrical current output for charging the battery or supplying energy to the traction motor.

US Patent:

7481112, Jan 27, 2009

Filed:

Sep 30, 2005

Appl. No.:

11/240804

Inventors:

Eun Sok Kim - Rancho Palos Verdes CA, US
Qiang Zou - Alhambra CA, US

Assignee:

University of Southern California - Los Angeles CA

International Classification:

G01P 15/12
G01P 9/04

US Classification:

7351433, 7350412

Abstract:

A MEMS silicon inertial sensor formed of a mass that is supported and constrained to vibrate in only specified ways. The sensors can be separately optimized from the support, to adjust the sensitivity separate from the bandwidth. The sensor can sense three dimensionally, or can only sense in a single plane.

US Patent:

7537070, May 26, 2009

Filed:

Jun 22, 2004

Appl. No.:

10/872785

Inventors:

Boris A. Maslov - Reston VA, US
Chahee Peter Cho - Lansdale PA, US
Eun S. Kim - Centreville VA, US

Assignee:

BluWav Systems LLC - Rochester Hills MI

International Classification:

B60K 6/00

US Classification:

180 652, 180 654

Abstract:

A portable range extender can be used to supply electrical power to an electric vehicle operable by an electric traction motor. The portable range extender includes an engine, a dynamoelectric machine coupled to the engine by a shaft, an autonomous range extender controller for controlling operations of the range extender independently of a controller for the vehicle, and circuitry associated with the engine and machine. The range extender and its controlling circuitry are self contained within an enclosure. The enclosure is partitioned to form two sections, a first section housing the dynamoelectric machine and the second section housing the engine. Windows in the enclosure provide a path for air cooling of the range extender components. Air cooling is facilitated by a first set of cooling fins mounted on the rotor of the dynamoelectric machine at an end proximate an air inlet window, a second set of cooling fins mounted on the rotor of the dynamoelectric machine in the vicinity of an opening in the partition, and a third set of cooling fins mounted on the engine at the opposite side of the partition opening.

US Patent:

7719170, May 18, 2010

Filed:

Jan 11, 2008

Appl. No.:

12/013413

Inventors:

Eun Sok Kim - Rancho Palos Verdes CA, US
Hongyu Yu - Los Angeles CA, US

Assignee:

University of Southern California - Los Angeles CA

International Classification:

H01L 41/08

US Classification:

310335

Abstract:

Techniques, apparatus and systems that use an acoustic transducer with a Fresnel lens to focus an acoustic wave for various applications, including acoustic droplet ejectors.