Patents by Inventor James Joseph Parker, Jr.

James Joseph Parker, Jr. 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).

  • Device for controlling a stepper motor that drives one or more camera elements
    Patent number: 5917303
    Abstract: A device for controlling a stepper motor that drives a plurality of shutter blades. The movement and position of the movement of the rotor of the stepper motor is monitored to determine when the next step of the stepper motor should be stepped so that the rotation of the rotor will be known to cause the shutter blades to form the correct aperture size. The device may also be used to drive an automatic focusing mechanism and/or zoom.
    Type: Grant
    Filed: October 7, 1993
    Date of Patent: June 29, 1999
    Assignee: Eastman Kodak Company
    Inventors: Jean Francois Depatie, J. Kelly Lee, Allan MacGregor Waugh, James Joseph Parker, Jr.