Patents by Inventor Yong A. Yu

Yong A. Yu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6310344
    Abstract: Disclosed is a wire-type corona charger having a wire electrode disposed between ground electrode plates. The wire electrode is supported by the ends of the plurality of wire electrode supporters which are so arranged that their ends have a curvature equal to arcuately-shaped upper edge of the ground electrode plates. The curvature coincides with one of the curvatures of the horizontal axis and the vertical axis of the interior surface of the panel faceplate, while the charger is pivoted along the other curvature of the faceplate. The charger can uniformly charge the photoconductive layer and improves the charging efficiency.
    Type: Grant
    Filed: April 27, 1999
    Date of Patent: October 30, 2001
    Assignees: Orion Electric Co., Ltd., Korea Institute of Science and Technology
    Inventors: Dong Ky Shin, Hyo Sup Lee, Sang Youl Yoon, Sang Bong Kwon, Cheon Su Kang, Myung Hwan Oh, Kwang Duk Ahn, Tae Suk Park, Chong Hong Pyun, Byung Yong Yu
  • Publication number: 20010029023
    Abstract: A method for evaluating whether a material will allow bacteria to pass through the material comprising providing bacteria which are modified to produce a first detectable signal, placing the bacteria on a first side of the material being evaluated, and determining whether the first signal is present on a second side of the material. A method for the evaluation of a material to determine whether the material is susceptible to bacterial contamination or colonization comprising providing bacteria which are modified to produce a first detectable signal, exposing the material being evaluated to the bacteria and determining whether the first signal is present on the material.
    Type: Application
    Filed: January 25, 2001
    Publication date: October 11, 2001
    Inventors: Aladar A. Szalay, Shahrokh Shabahang, Yong Yu
  • Patent number: 5724131
    Abstract: An integrated emission microscope with an emitted radiation detection system for collecting and analyzing radiation from a device under test. A semi-ellipsoidal mirror of high ellipticity directs emitted radiation from the device under test through an aperture to a radiation guide, Which transmits the radiation to spectral analyzer. The device under test may be mounted on a scanning stage. The system permits high spatial resolution selected area spectroscopic analysis, panchromatic imaging, and spectroscopic mapping of the emitted radiation from the device under test.
    Type: Grant
    Filed: August 4, 1995
    Date of Patent: March 3, 1998
    Assignee: The National University of Singapore
    Inventors: Wai Kin Chim, Daniel Siu Hung Chan, Jacob Chee Hong Phang, Jing Mei Tao, Yong Yu Liu
  • Patent number: 5371541
    Abstract: A superimpose control device which enables a superimpose function even in a VTR mode, by using a phase convening circuit for synchronizing the phase of a sub-carrier signal with the color burst signal of an applied video signal.
    Type: Grant
    Filed: December 29, 1993
    Date of Patent: December 6, 1994
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Ho-yong Yu