Daniel Jin Choi

6756594, Jun 29, 2004

Jan 26, 2001

09/771447

Thomas George - La Crescenta CA
Daniel S. Choi - Los Angeles CA
Eric Jones - Los Angeles CA

California Institute of Technology - Pasadena CA

G01N 2161

250343

A device for utilizing an optical infrared emitter/detector to sense substances of interest is provided. The infrared emitter/detector comprises a single crystal semiconductor, photonic band gap structure which functions both as an infrared emitter, a narrow-band filter, and as a broad-band infrared bolometer detector to exert wavelength control directly on the active element emitter/detector surface using the periodic symmetry of the photonic band gap structure to produce narrow wavelength âforbiddenâ optical transmission bands or modes to sense the presence of a specified substance in the environment. A system and method for sensing specific substances using the optical infrared emitter/detector of this invention in a sensor device is also provided. Finally, a method of manufacturing the infrared emitter/detectors of the present invention is also provided.

6803840, Oct 12, 2004

Apr 1, 2002

10/113247

Brian D. Hunt - La Cresenta CA
Flavio Noca - Altadena CA
Michael E. Hoenk - Valencia CA
Larry Epp - Pasadena CA
Daniel J. Hoppe - La Ca{overscore (n)}ada CA
Robert S. Kowalcyk - Santa Clarita CA
Daniel S. Choi - Los Angeles CA

California Institute of Technology - Pasadena CA

H03H 924

333186, 333197, 4234473, 310 36, 310 37, 205766, 205768

A tunable nanomechanical oscillator device and system is provided. The nanomechanical oscillator device comprising at least one nanoresonator, such as a suspended nanotube, designed such that injecting charge density into the tube (e. g. by applying a capacitively-cuopled voltage bias) changes the resonant frequency of the nanotube, and where exposing the resonator to an RF bias induces oscillitory movement in the suspended portion of the nanotube, forming a nanoscale resonator, as well as a force sensor when operated in an inverse mode. A method of producing an oriented nanoscale resonator structure with integrated electrodes is also provided.

7175762, Feb 13, 2007

Jun 6, 2003

10/455873

Flavio Noca - Altadena CA, US
Brian D. Hunt - La Crescenta CA, US
Michael J. Bronikowski - Altadena CA, US
Michael E. Hoenk - Valencia CA, US
Robert S. Kowalczyk - Santa Clarita CA, US
Daniel S. Choi - Los Angeles CA, US
Fei Chen - San Marino CA, US

California Institute of Technology - Pasadena CA

B01D 46/50
B01D 63/00
B01D 57/02

21050022, 21032175, 21032184, 210488, 210503, 204450, 204600, 977720, 977742, 977746, 977725

A nanofeature particulate trap comprising a plurality of densely packed nanofeatures, such as nanotubes, and a particulate detector incorporating the nanofeature particulate trap are provided. A method of producing a nanotrap structure alone or integrated with a particulate detector is also provided.

8187865, May 29, 2012

May 29, 2009

12/455186

Minhee Yun - La Crescenta CA, US
Nosang Myung - Rosemead CA, US
Richard Vasquez - Altadena CA, US
Margie Homer - Pasadena CA, US
Margaret Ryan - Pasadena CA, US
Jean-Pierre Fleurial - Altadena CA, US
Ratnakumar Bugga - Arcadia CA, US
Daniel Choi - Los Angeles CA, US
William Goddard - Pasadena CA, US
Abhijit Shevade - Pasadena CA, US
Mario Blanco - Temple City CA, US
Tahir Cagin - Arcadia CA, US
Wely Floriano - Pasadena CA, US

California Institute of Technology - Pasadena CA

C12M 1/34
C12M 3/00

4352872, 977762, 422 681, 422 8201, 422 8202, 4352831, 4352871, 4352883

The present invention relates to a nanowire sensor and method for forming the same. More specifically, the nanowire sensor comprises at least one nanowire formed on a substrate, with a sensor receptor disposed on a surface of the nanowire, thereby forming a receptor-coated nanowire. The nanowire sensor can be arranged as a sensor sub-unit comprising a plurality of homogeneously receptor-coated nanowires. A plurality of sensor subunits can be formed to collectively comprise a nanowire sensor array. Each sensor subunit in the nanowire sensor array can be formed to sense a different stimulus, allowing a user to sense a plurality of stimuli. Additionally, each sensor subunit can be formed to sense the same stimuli through different aspects of the stimulus. The sensor array is fabricated through a variety of techniques, such as by creating nanopores on a substrate and electrodepositing nanowires within the nanopores.

20030052006, Mar 20, 2003

Feb 22, 2001

09/791493

Flavio Noca - Altadena CA, US
Jingming Xu - Providence RI, US
Daniel Choi - Los Angeles CA, US
Brian Hunt - La Crescenta CA, US
Michael Hoenk - Valencia CA, US
Robert Kowalczyk - Santa Clarita CA, US

G01N027/27

204/450000, 204/600000

A device for utilizing a non-gel self-assembled nano-feature array molecular sieve for analyzing molecules is provided. The molecular sieve device comprises an ordered array of self-assembled nano-features which function as a molecular sieve to separate molecules based on a suitable characteristic. A system for integrating the non-gel ordered self-assembled nano-feature array molecular sieve of this invention into a device for separating molecules based on a characteristic and a method for separating a wide range of molecules using the non-gel ordered self-assembled nano-feature array molecular sieve of the invention are also provided.

20220414946, Dec 29, 2022

Aug 30, 2022

17/899503

- Yorba Linda CA, US
Daniel Choi - Yorba Linda CA, US

Sequoia Games, Inc. - Yorba Linda CA

G06T 11/00
A63F 13/65
A63F 13/79
G06F 16/27
H04L 9/32

In some aspects, the disclosure is directed to methods and systems for secure and authenticated tracking of entity possession via a lightweight centralized or distributed ledger. Ownership records of different entities may be recorded on an immutable ledger such that provenance of the entities is verifiable and a user cannot create or counterfeit an entity. In some implementations, the system may store metadata of entities in a separate database that may store records for each entity and correspond to the respective entity's virtual identifier, enabling the ledger records to contain much less data, saving memory resources and the energy that is required to maintain the ledger. In some implementations, distributed incremental values may be provided to members of an ownership or possession chain of an entity, which may encourage compliance, reporting of ownership transfer, and encourage additional transfers.

20220353331, Nov 3, 2022

Apr 29, 2021

17/244927

- Redmond WA, US
Kyle Patrick CURLETT - Seattle WA, US
Man Kwan LIU - Issaquah WA, US
Daniel Sungje CHOI - Seattle WA, US
Fiona Lieurance GASAWAY - Seattle WA, US
Cara Leggett SILVER - Seattle WA, US

Microsoft Technology Licensing, LLC - Redmond WA

H04L 29/08

Examples of the present disclosure describe systems and methods for establishing a persistent connection between file attachments uploaded to cloud storage and associated electronic communications. An electronic communication including an attached file may be stored and presented in a communication application user interface that includes interactive functions, such as edit and save functions. Upon selection of an interactive function, a copy of the file may be uploaded to a cloud storage location and, in some examples, opened in a productivity application. A link to the file at the cloud storage location may be stored as a property of the file that is stored with the electronic communication. Resultantly, a connection may be maintained between the file at the cloud storage location and the electronic communication. Based on this connection, the copy of the file at the cloud storage location may be opened upon a subsequent selection of an interactive function.

20220301236, Sep 22, 2022

Jun 6, 2022

17/833840

Daniel CHOI - Yorba Linda CA, US

G06T 11/00
A63F 13/65
A63F 13/79
G06F 16/27
H04L 9/32

In some aspects, the disclosure is directed to methods and systems for generating an augmented reality environment. An application executing on a computing device may receive a real-time video feed. The application may present the real-time video feed on a display of the computing device. The application may identify an image on a physical token from the real-time video feed. The application may select an animation from a set of one or more animations based on the identified image. The application may add the animation to the real-time video feed at an animation position above the physical token. The application may present the real-time video feed with the added animation.