Patents by Inventor Edward V. Koh

Edward V. Koh 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).

  • Method and system for counting and identifying variety of devices
    Patent number: 11222723
    Abstract: The invention relates to a method and system that uses ultra-high frequency (UHF) radio frequency identification (RFID) for counting and identifying a variety of objects during medical or surgical operations. The method includes passive UHF RFID tag, a RFID scanner to communicate with host equipment and storage in a database cloud. The method includes a water-proof antenna and microchip supported by a substrate with covering overlay materials. The invention further discloses a tracking method for counting process, with software implementation, to assist the count-in count-out function to track multiple medical devices, resulting in reduction of counting errors during surgical procedures when the current UHF RFID process is utilized.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: January 11, 2022
    Assignee: A Plus International Inc.
    Inventors: Edward V Koh, William M Adams, Wayne W Lin
  • Method and System for Counting and Identifying Variety of Devices
    Publication number: 20200402653
    Abstract: The invention relates to a method and system that uses ultra-high frequency (UHF) radio frequency identification (RFID) for counting and identifying a variety of objects during medical or surgical operations. The method includes passive UHF RFID tag, a RFID scanner to communicate with host equipment and storage in a database cloud. The method includes a water-proof antenna and microchip supported by a substrate with covering overlay materials. The invention further discloses a tracking method for counting process, with software implementation, to assist the count-in count-out function to track multiple medical devices, resulting in reduction of counting errors during surgical procedures when the current UHF RFID process is utilized.
    Type: Application
    Filed: September 9, 2019
    Publication date: December 24, 2020
    Applicant: A Plus International Inc.
    Inventors: Edward V KOH, William M ADAMS, Wayne W LIN
  • Methods and Compositions for Capillary Electrophoresis
    Publication number: 20090314638
    Abstract: This invention relates to improved methods and compositions for conducting Capillary Electrophoresis (CE) to separate molecules on the basis of their respective size or charge.
    Type: Application
    Filed: May 12, 2008
    Publication date: December 24, 2009
    Applicant: Beckman Coulter, Inc.
    Inventors: Yu Liu, M. Parameswara Reddy, Chitra K. Ratnayake, Edward V. Koh
  • Methods and compositions for capillary electrophoresis (CE)
    Patent number: 7381317
    Abstract: This invention relates to improved methods and compositions for conducting Capillary Electrophoresis (CE) to separate molecules on the basis of their respective size or charge.
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: June 3, 2008
    Assignee: Beckman Coulter, Inc.
    Inventors: Yu Liu, M. Parameswara Reddy, Chitra K. Ratnayake, Edward V. Koh
  • Methods and compositions for capillary electrophoresis (CE)
    Publication number: 20040050702
    Abstract: This invention relates to improved methods and compositions for conducting Capillary Electrophoresis (CE) to separate molecules on the basis of their respective size or charge.
    Type: Application
    Filed: June 27, 2003
    Publication date: March 18, 2004
    Inventors: Yu Liu, M. Parameswara Reddy, Chitra K. Ratnayake, Edward V. Koh