Patents by Inventor Wunji Lau

Wunji Lau 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 methods for a shape memory spring actuator and display
    Patent number: 7018209
    Abstract: Various apparatus and methods for an actuator and display using one or more shape memory springs. A shape memory spring is heated and urges a pin to a first or extended position. The pin may be supported in the first position by a supporting mechanism. The shape memory spring is heated electically, and in some embodiments under the control of a processor. The present invention may be used to display information provided in a user interface from a computer program, including text, numerical data, and graphical images.
    Type: Grant
    Filed: December 30, 2003
    Date of Patent: March 28, 2006
    Assignee: Purdue Research Foundation
    Inventors: David A. Schleppenbach, Wunji Lau, Joe P. Said
  • Apparatus and methods for a shape memory spring actuator and display
    Publication number: 20050069842
    Abstract: Various apparatus and methods for an actuator and display using one or more shape memory springs. A shape memory spring is heated and urges a pin to a first or extended position. The pin may be supported in the first position by a supporting mechanism. The shape memory spring is heated electically, and in some embodiments under the control of a processor. The present invention may be used to display information provided in a user interface from a computer program, including text, numerical data, and graphical images.
    Type: Application
    Filed: December 30, 2003
    Publication date: March 31, 2005
    Inventors: David Schleppenbach, Wunji Lau, Joe Said
  • Apparatus and methods for a shape memory spring actuator and display
    Patent number: 6705868
    Abstract: Various apparatus and methods for an actuator and display using one more shape memory springs. A shape memory spring is heated and urges a pin to a first or extended position. The pin may be supported in the first position by a supporting mechanism. The shape memory spring is heated electically, and in some embodiments under the control of a processor. The present invention may be used to display information provided in user interface from a computer program, including text, numerical data, and graphical images.
    Type: Grant
    Filed: March 18, 1998
    Date of Patent: March 16, 2004
    Assignee: Purdue Research Foundation
    Inventors: David A. Schleppenbach, Wunji Lau, Joe P. Said