Patents by Inventor John S. Chipperfield

John S. Chipperfield 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).

  • Hood assembly for a video display unit
    Patent number: 5485226
    Abstract: A hood assembly for a display such as a VDU display comprises a partially reflecting mirror made from sheet material having a relatively low light transmittance, in the range 25% to 45%, and most preferably in the range 32.5 to 37.5%.
    Type: Grant
    Filed: March 15, 1994
    Date of Patent: January 16, 1996
    Inventor: John S. Chipperfield