Patents by Inventor Hewson Nicholas Graham King

Hewson Nicholas Graham King 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).

  • Color tube having concentric phosphor ring pattern and electron multiplier channel plate
    Patent number: 4034254
    Abstract: A color cathode ray tube having a screen with concentric phosphor ring patterns and an electron multiplying channel plate between the screen and the electron gun, the channel plate including a focusing control electrode having a constant focusing action.
    Type: Grant
    Filed: April 24, 1975
    Date of Patent: July 5, 1977
    Assignee: U.S. Philips Corporation
    Inventors: Hewson Nicholas Graham King, John Revere Mansell, Pamela May Stubberfield
  • Color tube having channel electron multiplier and screen pattern of concentric areas luminescent in different colors
    Patent number: 4023063
    Abstract: Electron beam apparatus comprising a channel plate which emits electrons in the form of hollow electron beams, a focusing control electrode for controlling the diameter of the hollow beams and a target having a pattern of concentric areas aligned with each hollow beam, said pattern having at least two different areas which respond differently to electron bombardment and may be selectively bombarded under control of said electrode.
    Type: Grant
    Filed: April 17, 1974
    Date of Patent: May 10, 1977
    Assignee: U.S. Philips Corporation
    Inventors: Hewson Nicholas Graham King, Derek Washington
  • Channel plate with color selection electrodes and color phosphors
    Patent number: 4023064
    Abstract: A channel plate with color selection electrodes and color phosphors for use as an image display screen in a color television tube. This is a division, of application Ser. No. 288,597, filed Sept. 13, 1972, now U.S. Pat. No. 3,860,849, Jan. 14, 1975.This invention relates to colour television display apparatus.In conventional colour television display tubes, complex problems of registration arise. Thus, for example, the shadow-mask tube (in spite of the added cost and complexity of its three gun system) involves accurate alignment between the holes in the shadow-mask and the tri-colour phosphor triads on the display screen. In the case of the Chromatron there is the problem of aligning the colour-selector grid with the phosphor stripes.
    Type: Grant
    Filed: January 13, 1975
    Date of Patent: May 10, 1977
    Assignee: U.S. Philips Corporation
    Inventors: Pieter Schagen, Hewson Nicholas Graham King, Derek Washington
  • Cathode ray tube having channel multiplier and electron reflecting system for energizing color phosphor strips
    Patent number: 3939375
    Abstract: A channel plate with color selection electrodes and color phosphors for use an an image display screen in a color television tube.This is a division of application Ser. No. 288,597 filed Sept. 13, 1972, now U.S. Pat. No. 3,860,849.
    Type: Grant
    Filed: December 3, 1974
    Date of Patent: February 17, 1976
    Assignee: U.S. Philips Corporation
    Inventors: Pieter Schagen, Hewson Nicholas Graham King, Derek Washington
  • Electron multipliers having tapered channels
    Patent number: 3939374
    Abstract: A channel plate electron multiplier having channels which rapidly decrease in cross-section away from the input aperture and a conductive structure extending across the input aperture to flatten any fringing electrostatic field, resulting in an electrostatic field configuration which causes secondary emitted electrons to collide with the same side of the channel.
    Type: Grant
    Filed: January 7, 1974
    Date of Patent: February 17, 1976
    Assignee: U.S. Philips Corporation
    Inventors: Pieter Schagen, Hewson Nicholas Graham King, Daphne Louise Lamport, Roger Pook, Pamela May Stubberfield, Derek Washington