Yong Seok Choi

US Patent:

7408187, Aug 5, 2008

Filed:

Mar 29, 2005

Appl. No.:

11/092445

Inventors:

Il-Doo Kim - Seoul, KR
Yong Woo Choi - Lexington MA, US
Harry L. Tuller - Wellesley MA, US

Assignee:

Massachusetts Institute of Technology - Cambridge MA

International Classification:

H01L 51/00

US Classification:

257 40, 257 66, 257295, 257411, 257E29272

Abstract:

A transistor device includes a transparent substrate. A high K dielectric is formed on the transparent substrate and transferred onto a flexible substrate. An organic transistor is formed on the high K dielectric.

US Patent:

8232182, Jul 31, 2012

Filed:

Sep 7, 2005

Appl. No.:

11/221325

Inventors:

Harry L. Tuller - Wellesley MA, US
Yong Woo Choi - Lexington MA, US
Akintunde I. Akinwande - Newton MA, US

Assignee:

Massachusetts Institute of Technology - Cambridge MA

International Classification:

H01L 21/46

US Classification:

438458, 438473, 438778

Abstract:

A transfer layer includes a transparent substrate. A buffer layer is formed on the transparent substrate that comprises PbO, GaN, PbTiO, LaSrCoO(LSCO), or LaPbCoO(LPCO) so that separation between the buffer layer and the transparent substrate occurs at substantially high temperatures.

US Patent:

8504123, Aug 6, 2013

Filed:

May 7, 2012

Appl. No.:

13/465443

Inventors:

Yong Hoon Choi - Palo Alto CA, US

Assignee:

Google Inc. - Mountain View CA

International Classification:

H04M 1/00
H04B 1/04

US Classification:

455574, 4551275

Abstract:

A mobile communication device enables improved connectivity and power management. The device includes a first wireless network interface configured for connection to a first network and a second wireless network interface configured for connection to a second network. The first interface has an active mode of operation and a sleep mode. The device places the first interface in the sleep mode when not needed for communications. An external system such as a messaging server calls the device when it is unable to access the device through the first interface. The second network, which can be a cellular network, handles the call request and transmits a ringing signal to the second interface of the device. A notification handler, upon receipt of the ringing signal, wakes the first interface, permitting normal communications through the first interface. Power management logic can be more pro-active in placing the first interface into the sleep mode.

US Patent:

20080182420, Jul 31, 2008

Filed:

Nov 15, 2007

Appl. No.:

11/940876

Inventors:

Evelyn L. Hu - Goleta CA, US
Shuji Nakamura - Santa Barbara CA, US
Yong Seok Choi - Goleta CA, US
Rajat Sharma - Goleta CA, US

Assignee:

THE REGENTS OF THE UNIVERSITY OF CALIFORNIA - Oakland CA

International Classification:

H01L 21/302

US Classification:

438712, 257E21214

Abstract:

A method for ensuring the structural integrity of III-nitride opto-electronic or opto-mechanical air-gap nano-structured devices, comprising (a) performing ion beam implantation in a region of the III-nitride opto-electronic and opto-mechanical air-gap nano-structured device, wherein the milling significantly locally modifies a material property in the region to provide the structural integrity; and (b) performing a band-gap selective photo-electro-chemical (PEC) etch on the III-nitride opto-electronic and opto-mechanical air-gap nano-structured device. The method can be used to fabricate distributed Bragg reflectors or photonic crystals, for example. The method also comprises the suitable design of distributed Bragg reflector (DBR) structures for the PEC etching and the ion-beam treatment, the suitable design of photonic crystal distributed Bragg reflector (PCDBR) structures for PEC etching and the ion-beam treatment, the suitable placement of protection layers to prevent the ion-beam damage to optical activity and PEC etch selectivity, and a suitable annealing treatment for curing the material quality after the ion-beam treatment.

US Patent:

20120163255, Jun 28, 2012

Filed:

Dec 23, 2010

Appl. No.:

12/977345

Inventors:

Yong Hoon Choi - Mountain View CA, US

Assignee:

DEUTSCHE TELEKOM AG - Bonn

International Classification:

H04B 7/00

US Classification:

370310

Abstract:

A method for enhancing a data communication throughput associated with an in-vehicle telematics system includes receiving a communication request from the in-vehicle telematics system to perform at least one of a data upload to the Internet and a data download from the Internet, and verifying availability of one or more mobile devices within the vehicle. The maximum capability of a mobile network interface for each of the one or more available mobile devices within the vehicle is determined. When the communication request is for uploading data to the Internet, the data is fragmented into data fragments and distributed to the available mobile devices, whereas when the communication request is for downloading data from the Internet, it is determined for each mobile device which fragment of data is to be downloaded and from which server, and the respective determined fragments are received from each mobile device.

US Patent:

20120166078, Jun 28, 2012

Filed:

Dec 27, 2010

Appl. No.:

12/978708

Inventors:

Yong Hoon Choi - Mountain View CA, US

Assignee:

DEUTSCHE TELEKOM AG - Bonn

International Classification:

G01C 21/36

US Classification:

701436

Abstract:

A system for providing an externally visible signal regarding a navigational instruction at a vehicle includes a navigation system, a navigation message sender, a navigation message receiver, and a display system. The navigation system generates and outputs turn-by-turn navigational directions within the vehicle to assist a driver of the vehicle in reaching a given destination location. The navigation message sender receives the turn-by-turn navigational directions and transmits them to the navigation message receiver. The navigation message receiver provides a navigational message to the display system for display in a manner visible outside the vehicle.

US Patent:

20120176255, Jul 12, 2012

Filed:

Jan 10, 2011

Appl. No.:

12/987183

Inventors:

Yong Hoon Choi - Mountain View CA, US
Marcus Heitmann - Bonn, DE

Assignee:

DEUTSCHE TELEKOM AG - Bonn

International Classification:

G08G 1/123

US Classification:

340989

Abstract:

A method for assisting a vehicle user in locating a vehicle when parked includes detecting via a mobile device that the vehicle has been placed in a parked state and, in response to detecting that the vehicle has been placed in a parked state, automatically retrieving the vehicle location to the mobile device and recording the vehicle location on the mobile device. The method further entails providing, in response to a request from the user to locate the parked vehicle, instructions to the user to guide the user to the parked vehicle.

US Patent:

20120207723, Aug 16, 2012

Filed:

Feb 9, 2012

Appl. No.:

13/369997

Inventors:

Lin He - Berkeley CA, US
Yong Jin Choi - Oakland CA, US
Gregory J. Hannon - Cold Spring Harbor NY, US
Xingyue He - Cambridge MA, US

International Classification:

A61K 35/12
C12N 5/10
C12N 5/071

US Classification:

424 9321, 435366, 435377, 424 937

Abstract:

The present disclosure provides a method of generating an induced pluripotent stem cell; as well as nucleic acids and genetically modified host cells useful in generating iPSCs. The present disclosure provides iPSCs, and methods of use of same.