Patents by Inventor Derek Choi

Derek Choi 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).

  • Directional drilling using mechanical waves detectors
    Patent number: 9951606
    Abstract: A method and apparatus for directional drilling using mechanical wave detectors and a drill string having a drill bit at a drill bit end of the drill string. During an underground drilling operation in an underground formation, a mechanical wave signal is transmitted using a mechanical wave transmitter carried at the drill bit end of the drill string. The mechanical wave signal is received by an array of mechanical wave receivers at a ground surface above the underground formation. The received mechanical wave signals are processed to determine at least the location of the drill bit in the underground formation. The position and direction of travel data is communicated to a drilling control unit.
    Type: Grant
    Filed: January 3, 2014
    Date of Patent: April 24, 2018
    Assignee: Alcorp Ltd.
    Inventors: Samuel Ariaratnam, Jason Lueke, Hong Ting Derek Choi, Shu Jun Shan
  • DIRECTIONAL DRILLING USING MECHANICAL WAVES DETECTORS
    Publication number: 20160298443
    Abstract: A method and apparatus for directional drilling using mechanical wave detectors and a drill string having a drill bit at a drill bit end of the drill string. During an underground drilling operation in an underground formation, a mechanical wave signal is transmitted using a mechanical wave transmitter carried at the drill bit end of the drill string. The mechanical wave signal is received by an array of mechanical wave receivers at a ground surface above the underground formation. The received mechanical wave signals are processed to determine at least the location of the drill bit in the underground formation. The position and direction of travel data is communicated to a drilling control unit.
    Type: Application
    Filed: January 3, 2014
    Publication date: October 13, 2016
    Inventors: Samuel ARIARATNAM, Jason Lueke, Hong Ting Derek Choi, Shu Jun Shan
  • Method and apparatus for testing consistency of frozen beverages
    Patent number: 9404844
    Abstract: A method and apparatus using sample test container filled with beverage, a penetrator holder, a penetrator and release means is disclosed. In the method a sample, is drawn into the test container and the penetrator dropped into the sample, and a reading of the stiffness of the sample is made based on the depth of penetration of the penetrator onto the sample.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: August 2, 2016
    Assignee: Cornelius, Inc.
    Inventors: Nicholas M. Giardino, Derek Choi, Lawrence Oetjens, Andrew J. Tobler, Scott E. Sevcik
  • Method and Apparatus For Testing Consistency of Frozen Beverages
    Publication number: 20140190242
    Abstract: A method and apparatus using sample test container filled with beverage, a penetrator holder, a penetrator and release means is disclosed. In the method a sample, is drawn into the test container and the penetrator dropped into the sample, and a reading of the stiffness of the sample is made based on the depth of penetration of the penetrator onto the sample.
    Type: Application
    Filed: March 11, 2014
    Publication date: July 10, 2014
    Applicant: IMI Cornelius Inc.
    Inventors: Nicholas M. Giardino, Derek Choi, Lawrence Oetjens, Andrew J. Tobler, Scott E. Sevcik
  • Method and apparatus for testing consistency of frozen beverages
    Patent number: 8683849
    Abstract: A method and apparatus using a sample test container filled with beverage, a penetrator holder, a penetrator and release means is disclosed. In the method a sample, is drawn into the test container and the penetrator dropped into the sample, and a reading of the stiffness of the sample is made based on the depth of penetration of the penetrator onto the sample.
    Type: Grant
    Filed: January 11, 2011
    Date of Patent: April 1, 2014
    Assignee: IMI Cornelius, Inc.
    Inventors: Nicholas M. Giardino, Derek Choi, Lawrence Oetjens, Andrew J. Tobler, E. Scott Sevcik
  • Method and apparatus for testing consistency of frozen beverages
    Publication number: 20110226046
    Abstract: A method and apparatus using a sample test container filled with beverage, a penetrator holder, a penetrator and release means is disclosed. In the method a sample, is drawn into the test container and the penetrator dropped into the sample, and a reading of the stiffness of the sample is made based on the depth of penetration of the penetrator onto the sample.
    Type: Application
    Filed: January 11, 2011
    Publication date: September 22, 2011
    Inventors: Nicholas M. Giardino, Derek Choi, Lawrence Oetjens, Andrew J. Tobler, E. Scott Sevcik