David Van Nguyen

US Patent:

20120212938, Aug 23, 2012

Filed:

Mar 10, 2011

Appl. No.:

13/044550

Inventors:

David Nguyen - Miami FL, US
Dat Nguyen - Los Angeles CA, US

International Classification:

F21V 21/08

US Classification:

362104

Abstract:

A wearable light ring used to illuminate a working area while allowing the user to hold a tool with the same hand. The battery powered ring including an LED and control mechanism. The LED positioned on the light ring as to direct most of the light towards the fingertip allowing the user to simultaneously work with a tool and illuminate the working area with one hand. The light ring also having a mode of operation that filters UV light to prevent curing of composite materials.

US Patent:

20210248904, Aug 12, 2021

Filed:

Apr 22, 2019

Appl. No.:

17/049375

Inventors:

- Falls Church VA, US
David H Nguyen - Southbridge VA, US

International Classification:

G08G 1/08
G08G 1/01
G08G 1/052
G08G 1/056

Abstract:

A traffic detection device for sending a call signal to a traffic signal controller, the traffic detection device having a receiver to receive information sent from a mobile device, the information including identity information and/or location information of the mobile device, a traffic control device (TCD) interface to connect the traffic detection device to the traffic signal controller, and a processor to define a dynamic approach based on one or more of the identity information, speed limit, time of day, or speed of the mobile device. The device may determine whether to send a calf signal to the traffic signal controller via the TCD interface to prompt the traffic signal controller, when the processor determines that the mobile device is in the dynamic approach.

US Patent:

20200365015, Nov 19, 2020

Filed:

May 15, 2020

Appl. No.:

16/874760

Inventors:

- Arlington VA, US
David Hong Nguyen - Southbridge VA, US

International Classification:

G08G 1/01
G08G 1/081

Abstract:

A system for adaptively controlling traffic control devices having a traffic signal system, a computing network, a communication system, and a mobile device. The traffic signal system is configured to be in communication with the computing network through the communication system. The mobile device is also configured to be in communication with the computing network through the communication system. Then the computing network adaptively controls the traffic signal system using a location of the mobile device.

US Patent:

20180174449, Jun 21, 2018

Filed:

Dec 19, 2017

Appl. No.:

15/847351

Inventors:

- Arlington VA, US
David Hong Nguyen - Southbridge VA, US

International Classification:

G08G 1/08
G08G 1/015
G08G 1/01
G08G 1/056
G08G 1/095

Abstract:

A system for adaptively controlling traffic control devices having a traffic signal system, a computing network, a communication system, and a mobile device. The traffic signal system is configured to be in communication with the computing network through the communication system. The mobile device is also configured to be in communication with the computing network through the communication system. Then the computing network adaptively controls the traffic signal system using a location of the mobile device.