Patents by Inventor Alan Liebman

Alan Liebman 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 development system
    Patent number: 4113371
    Abstract: A development apparatus in which a plurality of differently colored particles are dispensed into a common sump. Differently colored particles are dispensed in a pre-selected ratio to form a resultant mixture of particles in the sump having a pre-selected color. This mixture is subsequently deposited on a latent image rendering the image visible in the pre-selected color.
    Type: Grant
    Filed: January 12, 1977
    Date of Patent: September 12, 1978
    Assignee: Xerox Corporation
    Inventors: Lawrence J. Fraser, Alan Liebman