Joon R Choi

US Patent:

6749239, Jun 15, 2004

Filed:

Feb 28, 2003

Appl. No.:

10/248915

Inventors:

Joon T. Choi - Los Angeles CA 90006

International Classification:

A47G 2110

US Classification:

294 992, 294 11

Abstract:

A chopstick manipulator comprises a bridge and clamps. Each clamp includes an inner support having an inner surface where an upper half of the inner surface has a mid portion so the bridge interconnects each mid portion thereof, a rear support extending from a rear end of the inner support so that about a right angle is formed by each outer surface of the inner and rear supports, and a distal support extending substantially forward from an outer end of the rear support while forming a substantially prismatic shape. The distal support is defined by an outer surface, a rearward slant surface and a forward slant surface so that a prismatic ridge by the respective slant surfaces approaches the outer surface of the inner support where an angle by the rear support and the rearward slant surface is less than 90 degrees.

US Patent:

20100224654, Sep 9, 2010

Filed:

Mar 9, 2009

Appl. No.:

12/400181

Inventors:

Joon T. Choi - Los Angeles CA, US

International Classification:

B05B 11/00
B67D 5/40

US Classification:

222382, 2224644

Abstract:

An aspect of the invention provides a spray device for siphoning fluid. The spray device comprises a container, a pump, and a siphon tube. The container has an opening at a top portion. The pump is provided on the opening of the container. The siphon tube extends from the pump down to a bottom portion of the container, and the siphon tube comprises a flexible portion in a middle portion of the siphon tube for allowing a lower end portion to fall downward under gravity when the spray device is tilted from a vertical position. The lower portion of the siphon tube is configured to reach center or corners of the bottom portion of the container. The flexible portion of the siphon tube may be disposed in the middle portion of the siphon tube such that the lower portion below the flexible portion falls downward due to weight of the lower portion due to gravity.

US Patent:

20220231670, Jul 21, 2022

Filed:

Jan 18, 2021

Appl. No.:

17/151395

Inventors:

- Waltham MA, US
Phillip Izdebski - Buena Park CA, US
Allison Y. Pern - Monterey Park CA, US
Joon S. Choi - Torrance CA, US

Assignee:

Raytheon Company - Waltham MA

International Classification:

H03H 17/06
H03H 17/02
G01R 31/3193

Abstract:

A finite impulse response (FIR) filter including a delay line and a plurality of arithmetic units. Each arithmetic unit is coupled to a different one of a plurality of tap points of the delay line, is configured to receive a respective signal value over the delay line, and is associated with a respective coefficient. Any given one of the arithmetic units is configured to receive a respective control word. The respective control word specifying: (i) a plurality of trivial multiplication operations, and (ii) a plurality of bit shift operations. Any given one of the arithmetic units is further configured to estimate or calculate a product of the respective signal of the arithmetic unit respective signal value and the respective coefficient of the arithmetic unit by performing the trivial multiplication operations and bit shift operations that are specified by the respective control word that is received at the given arithmetic unit.

US Patent:

20150343166, Dec 3, 2015

Filed:

Aug 17, 2012

Appl. No.:

14/418735

Inventors:

Jason RYU - TUSTIN CA, US
Joon CHOI - PALISADES PARK NJ, US
Paul RYU - ENGLEWOOD CLIFFS NJ, US

International Classification:

A61M 16/10
A47K 17/02
G01G 19/44
A47K 10/48

Abstract:

A full body drying system is an apparatus that can dry a full body with forced air, measure the weight of the body, and provide other health enhancing functions. The apparatus comprises a lower frame, and an upper frame, a blower unit, a foot plate, and a weighing scale. The lower frame and the upper frame provide the other components of the apparatus with the proper structural support. Once the user steps onto the foot plate, the blower unit provides the motorized forced air carrying massive amount of anions, which is used to dry and also to invigorate the body, and simultaneously the body weight is measured and displayed. In addition, around the user's feet area, UV light combined with antimicrobial plastic material used for the foot plate provide effective disinfection of the user's feet, which is further enhanced by the disinfecting ability of anions in the forced air stream.