Patents by Inventor Joseph W. Chavis

Joseph W. Chavis 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).

  • Display panel filter and method of making the same
    Patent number: 6490091
    Abstract: The present invention provides a device in the form of a filter which is useable in conjunction with a plasma display panel and which functions to reduce reflection after assembly to acceptable levels, to increase contrast enhancement ratios, to reduce EMI emissions to levels which comply with consumer safety and other regulations and standards and to reduce infrared transmission in the 800 nm-1000 nm range to a level which does not interfere with IR remote control operation. The present invention also relates to a method of making such a plasma display panel filter.
    Type: Grant
    Filed: January 19, 2000
    Date of Patent: December 3, 2002
    Assignee: Viratec Thin Films, Inc.
    Inventors: Daniel P. Woodruff, Chad J. Carter, Joseph W. Chavis