Patents by Inventor Cecilia Han-Chang

Cecilia Han-Chang 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).

  • Three-dimensional representation of a spacecraft's trajectory
    Patent number: 5987363
    Abstract: A method and a computer system with a specialized graphic user interface for processing trajectory data of a spacecraft and planets. The preferred graphic user interface is capable of representing the orbital trajectory of the spacecraft traveling from one planet to another in 3D and providing user interactions to display the orbit information at any time and position.
    Type: Grant
    Filed: March 26, 1997
    Date of Patent: November 16, 1999
    Assignee: California Institute of Technology
    Inventors: Alan Quan, Cecilia Han-Chang, Ursula Schwuttke