Patents by Inventor Hong-Chung Chang

Hong-Chung 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).

  • Patent number: 6971181
    Abstract: A digital display compass for mounting on vehicle rear view mirrors, including a direction sensor module generating signals corresponding to a direction that it is facing attached to the inside of the vehicle windshield, an electronic housing attached to the back side of the rear view mirror, and a digital display attached to the front side of the rear view mirror. A flexible transmission cord extends from the directional sensor module to the electronic housing, and transmits the signals from the direction sensor module. The electronic housing contains a battery power source and electronics for converting the signals received from the transmission cord to drive a digital display representative of the direction sensed by the direction sensor module. A flexible cable extends from the back side of the mirror to the front side of the mirror and provides electronic communication from the electronic housing to the digital display.
    Type: Grant
    Filed: February 9, 2004
    Date of Patent: December 6, 2005
    Assignee: Bell Automotive Products, Inc.
    Inventors: Patrick L. Ohm, Robert A. Horn, Hong-Chung Chang
  • Publication number: 20050172504
    Abstract: A digital display compass for mounting on vehicle rear view mirrors, including a direction sensor module generating signals corresponding to a direction that it is facing attached to the inside of the vehicle windshield, an electronic housing attached to the back side of the rear view mirror, and a digital display attached to the front side of the rear view mirror. A flexible transmission cord extends from the directional sensor module to the electronic housing, and transmits the signals from the direction sensor module. The electronic housing contains a battery power source and electronics for converting the signals received from the transmission cord to drive a digital display representative of the direction sensed by the direction sensor module. A flexible cable extends from the back side of the mirror to the front side of the mirror and provides electronic communication from the electronic housing to the digital display.
    Type: Application
    Filed: February 9, 2004
    Publication date: August 11, 2005
    Inventors: Patrick Ohm, Robert Horn, Hong-Chung Chang
  • Patent number: D460708
    Type: Grant
    Filed: December 10, 2001
    Date of Patent: July 23, 2002
    Assignee: Bell Automotive Products, Inc.
    Inventors: Patrick L. Ohm, Hong-Chung Chang