Patents by Inventor Clarence H. Chui

Clarence H. Chui 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).

  • Micro-switches for downhole use
    Patent number: 7505244
    Abstract: A downhole tool includes a device to be activated by electrical energy and a micro-switch that includes conductors and an element between the first and second conductors selected from the group consisting of: a dielectric element capable of being modulated to provide a conductive path in response to receipt of electrical energy; and an element moveable in response to application of an electrical energy. The micro-switch may be formed of microelectromechanical system (MEMS) technology or microelectronics technology.
    Type: Grant
    Filed: February 18, 2005
    Date of Patent: March 17, 2009
    Assignee: Schlumberger Technology Corp.
    Inventors: Nolan C. Lerche, James E. Brooks, Charles Cameron Abnet, Clarence H. Chui, Stuart B. Brown
  • Micro-switches for downhole use
    Patent number: 7116542
    Abstract: A downhole tool includes a device to be activated by electrical energy and a micro-switch that includes conductors and an element between the first and second conductors selected from the group consisting of: a dielectric element capable of being modulated to provide a conductive path in response to receipt of electrical energy; and an element moveable in response to application of an electrical energy. The micro-switch may be formed of microelectromechanical system (MEMS) technology or microelectronics technology.
    Type: Grant
    Filed: September 5, 2001
    Date of Patent: October 3, 2006
    Assignee: Schlumberger Technology Corporation
    Inventors: Nolan C. Lerche, James E. Brooks, Charles Cameron Abnet, Clarence H. Chui, Stuart B. Brown
  • Micro-switches for downhole use
    Publication number: 20020048135
    Abstract: A downhole tool includes a device to be activated by electrical energy and a micro-switch that includes conductors and an element between the first and second conductors selected from the group consisting of: a dielectric element capable of being modulated to provide a conductive path in response to receipt of electrical energy; and an element moveable in response to application of an electrical energy. The micro-switch may be formed of microelectromechanical system (MEMS) technology or microelectronics technology.
    Type: Application
    Filed: September 5, 2001
    Publication date: April 25, 2002
    Inventors: Nolan C. Lerche, James E. Brooks, Charles Cameron Abnet, Clarence H. Chui, Stuart B. Brown