Patents by Inventor Ohmyoung Kwon

Ohmyoung Kwon 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).

  • Apparatus and method for visually identifying micro-forces with a palette of cantilever array blocks
    Patent number: 7105358
    Abstract: An apparatus to measure micro-forces includes a cantilever palette with a set of cantilever array blocks. Each cantilever array block includes a set of cantilevers, with each cantilever including a set of cantilever fingers surrounded by a frame with frame fingers. The cantilever fingers and the frame fingers form a diffraction grating. Each cantilever array block is configured to be responsive to a predetermined micro-force, such that cantilevers of the cantilever array block deflect in the presence of the predetermined micro-force, which causes the diffraction grating to diffract light and thereby provide a visual indication of the presence of the predetermined micro-force.
    Type: Grant
    Filed: February 13, 2002
    Date of Patent: September 12, 2006
    Assignee: The Regents of the University of California
    Inventors: Arunaya Majumdar, Thomas Michael Perazzo, Minyao Mao, Ohmyoung Kwon, Yang Zhao, Guanghua Wu
  • AC type flowmeter and method of mapping flow rate data for the same
    Patent number: 7007549
    Abstract: The present invention relates to a flowmeter suitable for a micro flow sensor. The flowmeter of the present invention comprises a resistive heater to be inserted into a fluid, AC power with a first frequency supplied to the resistive heater to periodically heat the resistive heater, a signal processing unit for detecting a first signal from the resistive heater in relation to a temperature variation of the resistive heater by the AC power, and obtaining a phase lag of the first signal relative to the heat generation in the resistive heater, and an operation unit for calculating a flow rate based on the obtained phage lag. According to the present invention, the flowmeter of the present invention has a wide measurement range and high measurement accuracy with a simple structure.
    Type: Grant
    Filed: January 15, 2004
    Date of Patent: March 7, 2006
    Assignee: Seoul National University Industry Foundation
    Inventors: Ohmyoung Kwon, Joon Sik Lee, Young Ki Choi, Seungho Park, Won Seok Chung
  • AC type flowmeter and method of mapping flow rate data for the same
    Publication number: 20050044950
    Abstract: The present invention relates to a flowmeter suitable for a micro flow sensor. The flowmeter of the present invention comprises a resistive heater to be inserted into a fluid, AC power with a first frequency supplied to the resistive heater to periodically heat the resistive heater, a signal processing unit for detecting a first signal from the resistive heater in relation to a temperature variation of the resistive heater by the AC power, and obtaining a phase lag of the first signal relative to the heat generation in the resistive heater, and an operation unit for calculating a flow rate based on the obtained phage lag. According to the present invention, the flowmeter of the present invention has a wide measurement range and high measurement accuracy with a simple structure.
    Type: Application
    Filed: January 15, 2004
    Publication date: March 3, 2005
    Inventors: Ohmyoung Kwon, Joon Lee, Young Choi, Seungho Park, Won Chung
  • Apparatus and method for visually identifying micro-forces with a palette of cantilever array blocks
    Publication number: 20020102743
    Abstract: An apparatus to measure micro-forces includes a cantilever palette with a set of cantilever array blocks. Each cantilever array block includes a set of cantilevers, with each cantilever including a set of cantilever fingers surrounded by a frame with frame fingers. The cantilever fingers and the frame fingers form a diffraction grating. Each cantilever array block is configured to be responsive to a predetermined micro-force, such that cantilevers of the cantilever array block deflect in the presence of the predetermined micro-force, which causes the diffraction grating to diffract light and thereby provide a visual indication of the presence of the predetermined micro-force.
    Type: Application
    Filed: February 13, 2002
    Publication date: August 1, 2002
    Applicant: The Regents of the University of California
    Inventors: Arunaya Majumdar, Thomas Michael Perazzo, Minyao Mao, Ohmyoung Kwon, Yang Zhao, Guanghua Wu