Patents by Inventor Francis B. Strik

Francis B. Strik 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).

  • Method of manufacturing a colour television display tube and tube manufactured according to this method
    Patent number: 4496641
    Abstract: A method of making a colour display screen for a television display tube is disclosed. On the window portion of the tube an electron-absorbing layer is provided which is scanned by means of an electron beam via the shadow mask. The charge image on the layer is then developed xerographically. The layer is preferably photoconductive so as to be able to remove the charge remaining after the development by means of a uniform exposure.
    Type: Grant
    Filed: January 18, 1983
    Date of Patent: January 29, 1985
    Assignee: U.S. Philips Corporation
    Inventors: Jacob Van Den Berg, Johannes G. Van Lent, Francis B. Strik