Patents by Inventor Peter John Fennemore Smith

Peter John Fennemore Smith 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).

  • Deposition of electroluminescent material through superimposed dual masks
    Patent number: 4119745
    Abstract: A display device includes a layer of electroluminescent material which is capable of conducting electric current. The electroluminescent material is sandwiched between a pair of electrodes to which a voltage is to be applied to excite the electroluminescent material to luminescence. The display device is manufactured by disposing on an assembly comprising a substrate with one of the said electrodes thereon, two masks in which are formed aligned apertures defining a region in which the electroluminescent material is to be provided. The electroluminescent material is disposed in the apertures, and, after that material has solidified one of the masks is removed, the other of the electrodes then being formed on the exposed surface of the electroluminescent material and within slots in the remaining mask and the mask is removed.
    Type: Grant
    Filed: December 22, 1976
    Date of Patent: October 10, 1978
    Assignees: Smiths Industries Limited, Phosphor Products Company Limited
    Inventor: Peter John Fennemore Smith