Patents by Inventor Augustus W. Winfield

Augustus W. Winfield 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).

  • Assurance of non-alteration of files
    Publication number: 20030023869
    Abstract: A file to be archived is split into multiple parts. The parts are stored on multiple write-once media. Alteration of a file then requires physical replacement of multiple write-once media.
    Type: Application
    Filed: July 27, 2001
    Publication date: January 30, 2003
    Inventors: Augustus W. Winfield, Alexander J. Neudeck
  • Synchronized graphics ink jet printer
    Patent number: 4312007
    Abstract: An ink jet printer utilizing an electrically driven and piezoelectrically actuated print head and a rotating cylindrical drum synchronizes the generation of ink drops with the instantaneous speed of the drum to compensate for variations in the speed of the drum. The print head is driven by a triggerable single cycle sine wave generator. The drum and a lead screw for advancing the print head across the drum are each driven by stepper motors.
    Type: Grant
    Filed: July 26, 1979
    Date of Patent: January 19, 1982
    Assignee: Hewlett-Packard Company
    Inventor: Augustus W. Winfield