Patents by Inventor Kenneth John Drikwater

Kenneth John Drikwater 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).

  • Optical device and method of manufacture
    Publication number: 20040247874
    Abstract: The present invention provides for a method of producing an optical device by means of electron beam lithography and including the step of varying the characteristics of the electron beam spot during formation of the device and also an apparatus for producing diffractive optical devices and/or holographic devices by means of electron beam lithography and including an electron beam lithograph, controlling and processing means, means for varying the characteristics of the electron beam spot during formation of the device, and wherein the processing means is arranged for compiling and pre-processing data and for providing optimisation and allocation control and to optical devices such as those produced thereby.
    Type: Application
    Filed: July 16, 2004
    Publication date: December 9, 2004
    Inventors: Zbynek Ryzi, Kenneth John Drikwater, Frantisek Matejka