Patents by Inventor Jerome P. Johnson

Jerome P. Johnson 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).

  • Magnetic disk drive control apparatus and method
    Patent number: 4458273
    Abstract: A microprocessor for control of a disk drive is shown which utilizes status signals passed back to the processor indicating the status of operation of the drive. A clock is provided for precise measurement of the elapsed time between consecutive read or write operations and for stopping the drive motor after a specified delay.
    Type: Grant
    Filed: April 28, 1981
    Date of Patent: July 3, 1984
    Assignee: Iomega Corporation
    Inventor: Jerome P. Johnson