Patents by Inventor Pat Grasso

Pat Grasso 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).

  • Dispensing cartridge for a zerographic reproduction machine
    Patent number: 4951094
    Abstract: A toner cartridge is modified so as to improve the dispensing of toner through discharge ports extending longitudinally along the cartridge. A flexible flap member is secured external to the cylinder and overlies the ports so as to prevent toner from exiting the ports except along the preferred dispense zone, e.g., from the 4 o'clock to the 8 o'clock position.
    Type: Grant
    Filed: January 12, 1990
    Date of Patent: August 21, 1990
    Assignee: Xerox Corporation
    Inventors: Conrad J. Bell, Pat Grasso, John Webb