James Yu

US Patent:

20080242941, Oct 2, 2008

Filed:

Mar 30, 2007

Appl. No.:

11/731085

Inventors:

John Jungyoon Kim - Las Vegas NV, US
James Jian Yu Chang - Los Angeles CA, US

International Classification:

A61B 13/00

US Classification:

600241

Abstract:

The present invention relates to an accessory apparatus for use with conventional tongue depressors. The apparatus comprises a platform, a lens/guard piece wherein said lens/guard has a diameter larger than an average adult's open mouth, and a hinge unit for attachment of said lens/guard to said platform. The apparatus may further comprise a light source and a USB camera.

US Patent:

20100242572, Sep 30, 2010

Filed:

Sep 22, 2007

Appl. No.:

12/438361

Inventors:

James Yu - Dallas TX, US

International Classification:

G01N 21/00
G01J 3/42

US Classification:

73 2402, 356437

Abstract:

Methods and systems to measure simultaneously concentrations or concentration ratio(s) of two or more gas ingredients in a sample area comprising: a wavelength modulated light source; an acoustic detector or a photodetector; and means to analyze the signal from the acoustic detector or the photodetector and calculate the concentrations or concentration ratio(s). The light from the light source is transmitted through the sample area. Part of the light will be absorbed in the sample area by the gas ingredients and generates photoacoustic signal. The acoustic detector is used to sample the photoacoustic signal. Alternatively, a photodetector is used to sample the light intensity after the light is transmitted through the sample area.

US Patent:

43296963, May 11, 1982

Filed:

Jul 23, 1980

Appl. No.:

6/171594

Inventors:

George W. Denlinger - Springboro OH
Robert A. Wiley - Richardson TX
James H. Yu - Dallas TX

Assignee:

The Mead Corporation - Dayton OH

International Classification:

G01D 1518

US Classification:

346 75

Abstract:

An ink jet fluid system includes a print head, defining a fluid reservoir, and further including at least one orifice communicating with the reservoir for generating a jet drop stream from the fluid flowing through the orifice. Inlet and outlet valves are connected to inlet and outlet openings of the print head, respectively, and a siphon line extending generally downward is connected to the outlet valve. A float valve, connected between the siphon line and the fluid supply system for the print head, vents the lower end of the siphon line to atmosphere to produce a sub-atmospheric fluid pressure within the print head after shutdown of the printer. The float valve includes a float which prevents air from entering the fluid supply through the valve. The float valve further is arranged so as to prevent ink within the valve from flowing out the vent opening.