Andrew H Kim

US Patent:

6489636, Dec 3, 2002

Filed:

Mar 29, 2001

Appl. No.:

09/823732

Inventors:

Werner K. Goetz - Palo Alto CA
Michael D. Camras - Sunnyvale CA
Nathan F. Gardner - Mountain View CA
R. Scott Kern - San Jose CA
Andrew Y. Kim - Hayward CA
Stephen A. Stockman - Morgan Hill CA

Assignee:

LumiLeds Lighting U.S., LLC - San Jose CA

International Classification:

H01L 3300

US Classification:

257 94, 257 96, 257103, 257190

Abstract:

A smoothing structure containing indium is formed between the substrate and the active region of a III-nitride light emitting device to improve the surface characteristics of the device layers. In some embodiments, the smoothing structure is a single layer, separated from the active region by a spacer layer which typically does not contain indium. The smoothing layer contains a composition of indium lower than the active region, and is typically deposited at a higher temperature than the active region. The spacer layer is typically deposited while reducing the temperature in the reactor from the smoothing layer deposition temperature to the active region deposition temperature. In other embodiments, a graded smoothing region is used to improve the surface characteristics. The smoothing region may have a graded composition, graded dopant concentration, or both.

US Patent:

6635904, Oct 21, 2003

Filed:

Mar 29, 2001

Appl. No.:

09/823823

Inventors:

Werner K. Goetz - Palo Alto CA
Michael D. Camras - Sunnyvale CA
Nathan F. Gardner - Mountain View CA
R. Scott Kern - San Jose CA
Andrew Y. Kim - Hayward CA
Stephen A. Stockman - Morgan Hill CA

Assignee:

Lumileds Lighting U.S., LLC - San Jose CA

International Classification:

H01L 3300

US Classification:

257103, 257101, 257102, 257 96, 257 14, 257190, 257615

Abstract:

A smoothing structure containing indium is formed between the substrate and the active region of a III-nitride light emitting device to improve the surface characteristics of the device layers. In some embodiments, the smoothing structure is a single layer, separated from the active region by a spacer layer which typically does not contain indium. The smoothing layer contains a composition of indium lower than the active region, and is typically deposited at a higher temperature than the active region. The spacer layer is typically deposited while reducing the temperature in the reactor from the smoothing layer deposition temperature to the active region deposition temperature. In other embodiments, a graded smoothing region is used to improve the surface characteristics. The smoothing region may have a graded composition, graded dopant concentration, or both.

US Patent:

20020190259, Dec 19, 2002

Filed:

May 29, 2001

Appl. No.:

09/870330

Inventors:

Werner Goetz - Palo Alto CA, US
Nathan Gardner - Mountain View CA, US
Richard Kern - San Jose CA, US
Andrew Kim - San Jose CA, US
Anneli Munkholm - Portolla Valley CA, US
Stephen Stockman - Morgan Hill CA, US
Christopher Kocot - Palo Alto CA, US
Richard Schneider - Mountain View CA, US

International Classification:

H01L027/15
H01L031/12

US Classification:

257/079000, 257/086000

Abstract:

III-Nitride light emitting diodes having improved performance are provided. In one embodiment, a light emitting device includes a substrate, a nucleation layer disposed on the substrate, a defect reduction structure disposed above the nucleation layer, and an n-type III-Nitride semiconductor layer disposed above the defect reduction structure. The n-type layer has, for example, a thickness greater than about one micron and a silicon dopant concentration greater than or equal to about 10cm. In another embodiment, a light emitting device includes a III-Nitride semiconductor active region that includes at least one barrier layer either uniformly doped with an impurity or doped with an impurity having a concentration graded in a direction substantially perpendicular to the active region.

US Patent:

20220415104, Dec 29, 2022

Filed:

Aug 29, 2022

Appl. No.:

17/897979

Inventors:

- Cupertino CA, US
Andrew S. KIM - Walnut Creek CA, US
Matthew C. SANDERS - Santa Clara CA, US
Trevor W. YOUNG - Livermore CA, US

International Classification:

G07C 9/00
G06F 3/04847
G06F 3/04842

Abstract:

The present disclosure generally relates to user interfaces for managing locks. In some examples, an electronic device displays user interfaces for configuring a lock accessory device based on detected features of the lock accessory device, such as a short-range communication user interface for enabling an express mode of the lock accessory device and/or a pin user interface object for enabling a code for accessing the lock accessory device. In some examples, an electronic device displays a user interface corresponding to a respective user of a home automation system that includes statuses indicating whether the respective user has access to a plurality of lock accessory devices of the home automation system.

US Patent:

20230128536, Apr 27, 2023

Filed:

Oct 11, 2022

Appl. No.:

18/045582

Inventors:

- Fremont CA, US
Andrew Chanul Kim - Fremont CA, US
Samit K. Basu - Fremont CA, US
Kimberly Adair Swift - Riverview FL, US
Rebecca Ann Steinmann - Katy TX, US

International Classification:

G01M 3/04
G01N 33/00

Abstract:

A remote methane detector is described herein. The remote methane detector includes an external shell defining an interior cavity. The remote methane detector also includes an airflow aperture. The remote methane detector also includes a methane sensor disposed within the interior cavity, wherein the methane sensor is adapted and configured to receive airflow from the airflow aperture and to detect methane within the airflow. The remote methane detector also includes a rechargeable power source. The remote methane detector also includes a low-energy telecommunications transceiver chain. The remote methane detector also includes an energy collector adapted and configured to collect renewable energy and to power at least the methane sensor and the low-energy telecommunications transceiver chain.

US Patent:

20190376663, Dec 12, 2019

Filed:

Nov 26, 2018

Appl. No.:

16/199382

Inventors:

- Burlingame CA, US
Andrew Kim - Burlingame CA, US
Peter Kozodoy - Burlingame CA, US
John Lloyd - Burlingame CA, US

International Classification:

F21V 5/00
F21V 13/04
F21S 41/141
F21S 41/20
F21S 41/30

Abstract:

A steerable illumination fixtures include an emitting source and a refractive optical system that steers an emitted beam by relative translation of the emitting source against the optical system. The light emitting source may be placed along an optical axis of one or more lenses to produce an output beam along that axis, or translated in-plane (orthogonal to the optical axis) relative to the lenses to produce a steered beam. The optical system may include refractive lenses and in some embodiments mixing channels and/or one or more baffles with apertures. The design is typically optimized to produce a round, uniform beam that retains approximately the same power level and beam width as it is steered. It is beneficial, but not required, that a second lens have a diameter equal to or larger than a first lens. The lenses may be configured so that the effective focal plane of the two lenses together is located approximately at the plane of the light emitting source.

US Patent:

20180211250, Jul 26, 2018

Filed:

Jan 25, 2017

Appl. No.:

15/415296

Inventors:

- Charlotte NC, US
Michael K. Lee - San Mateo CA, US
Andrew DongHo Kim - Glendale AZ, US
Craig D. Widmann - Chandler AZ, US

International Classification:

G06Q 20/38
H04L 29/08
H04L 29/06
G06Q 20/40

Abstract:

Systems, computer program products, and methods are described herein for transfer of resources via a secure channel using an alias. The present invention receives a first alias associated with a user; dynamically generates a web portal associated with the entity to enable the user to input an authorization code; electronically receives, via the web portal, the authorization code from the user; determine a first resource event based on at least receiving the first alias and the authorization code; triggers the first resource event based on at least a successful validation of the authorization code; and transfers the resources from the user record associated with the third party to the target record via the secure channel in response to triggering the first resource event.

US Patent:

20140218608, Aug 7, 2014

Filed:

Feb 4, 2014

Appl. No.:

14/172778

Inventors:

David Anthony Stelliga - Half Moon Bay CA, US
Andrew Joo Kim - Suwanee GA, US

International Classification:

H04N 7/01
H04N 21/4363

US Classification:

348441

Abstract:

Digital data, including audio and video, may be communicated at increased data rates by utilizing non-data signal channels in cables to communicate additional data. For data transmission, a reformatter receives data in a first format adapted for communication over the data signal channels of a cable. The reformatter may convert the received data into a second format with one or more additional data signals. The reformatter then utilizes non-data signal channels of the cable to carry the additional data signals. An example non-data signal channel may include a clock signal channel, and the reformatter may fold a clock signal into one or more of the data signals to allow for clock recovery downstream. Data may also be split into two or more subsets and each subset encoded separately, for example with two or more data encoders such as legacy HDMI encoders.