Patents by Inventor Chan Ghee Koh

Chan Ghee 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).

  • Wing for wide tow of geophysical survey sources
    Patent number: 10274626
    Abstract: Techniques are disclosed relating to wide towing of marine survey signal sources. In one embodiment, an apparatus includes a signal source and a wing coupled to the signal source. In this embodiment, the wing is configured to impart a force to the signal source when towed through a body of water by a survey vessel. In this embodiment, the force includes a lateral component and a vertical component. The wing may be configured to impart the force based on a shape of the wing and an orientation of the wing. The wing may extend over at least a third of a length of a keel of the apparatus. At least a majority of a top surface of the wing may be oriented within 20 degrees of parallel to a surface of the body of water. The wing may include a plurality of wing sections.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: April 30, 2019
    Assignees: PGS Geophysical AS, National University of Singapore
    Inventors: Chan Ghee Koh, Anders Goran Mattsson
  • WING FOR WIDE TOW OF GEOPHYSICAL SURVEY SOURCES
    Publication number: 20170102473
    Abstract: Techniques are disclosed relating to wide towing of marine survey signal sources. In one embodiment, an apparatus includes a signal source and a wing coupled to the signal source. In this embodiment, the wing is configured to impart a force to the signal source when towed through a body of water by a survey vessel. In this embodiment, the force includes a lateral component and a vertical component. The wing may be configured to impart the force based on a shape of the wing and an orientation of the wing. The wing may extend over at least a third of a length of a keel of the apparatus. At least a majority of a top surface of the wing may be oriented within 20 degrees of parallel to a surface of the body of water. The wing may include a plurality of wing sections.
    Type: Application
    Filed: December 22, 2016
    Publication date: April 13, 2017
    Inventors: Chan Ghee Koh, Anders Goran Mattsson
  • Wing for wide tow of geophysical survey sources
    Patent number: 9551801
    Abstract: Techniques are disclosed relating to wide towing of marine survey signal sources. In one embodiment, an apparatus includes a signal source and a wing coupled to the signal source. In this embodiment, the wing is configured to impart a force to the signal source when towed through a body of water by a survey vessel. In this embodiment, the force includes a lateral component and a vertical component. The wing may be configured to impart the force based on a shape of the wing and an orientation of the wing. The wing may extend over at least a third of a length of a keel of the apparatus. At least a majority of a top surface of the wing may be oriented within 20 degrees of parallel to a surface of the body of water. The wing may include a plurality of wing sections.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: January 24, 2017
    Assignees: PGS Geophysical AS, National University of Singapore
    Inventors: Chan Ghee Koh, Anders Goran Mattsson
  • Vibration detector and method
    Patent number: 9297915
    Abstract: A vibration detector (100) is disclosed herein. In a first embodiment, the vibration detector (100) includes a support member (300, 302) arranged to vibrate, and a sensor (207) arranged to detect a vibration frequency of the support member (300, 302). The vibration frequency to be detected is dependent on the support member's mechanical structure, in which the support member's mechanical structure is mechanically reconfigurable to vary the vibration frequency to be detected by the sensor (207).
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: March 29, 2016
    Assignee: National University of Singapore
    Inventors: Chan Ghee Koh, Khac Kien Vu
  • WING FOR WIDE TOW OF GEOPHYSICAL SURVEY SOURCES
    Publication number: 20140269177
    Abstract: Techniques are disclosed relating to wide towing of marine survey signal sources. In one embodiment, an apparatus includes a signal source and a wing coupled to the signal source. In this embodiment, the wing is configured to impart a force to the signal source when towed through a body of water by a survey vessel. In this embodiment, the force includes a lateral component and a vertical component. The wing may be configured to impart the force based on a shape of the wing and an orientation of the wing. The wing may extend over at least a third of a length of a keel of the apparatus. At least a majority of a top surface of the wing may be oriented within 20 degrees of parallel to a surface of the body of water. The wing may include a plurality of wing sections.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 18, 2014
    Applicants: National University of Singapore, PGS GEOPHYSICAL AS
    Inventors: Chan Ghee Koh, Anders Goran Mattsson
  • VIBRATION DETECTOR AND METHOD
    Publication number: 20130180336
    Abstract: A vibration detector (100) is disclosed herein. In a first embodiment, the vibration detector (100) comprises a support member (300, 302) arranged to vibrate, and a sensor (207) arranged to detect a vibration frequency of the support member (300, 302). The vibration frequency to be detected is dependent on the support member's mechanical structure, in which the support member's mechanical structure is mechanically reconfigurable to vary the vibration frequency to be detected by the sensor (207).
    Type: Application
    Filed: September 22, 2011
    Publication date: July 18, 2013
    Applicant: National University of Singapore
    Inventors: Chan Ghee Koh, Khac Kien Vu