Patents by Inventor Joseph M. Valentine

Joseph M. Valentine 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).

  • Apparatus and method for preventing computer access by unauthorized personnel
    Patent number: 4858117
    Abstract: The apparatus provides a secure input/output command system by the operating system generating a virtual input/output command including a virtual channel number, verifying that the user has authorization to access the processes and the device, and then generating a physical input/output command for transfer over a system bus to the device addressed by the physical channel number included in the command.
    Type: Grant
    Filed: August 7, 1987
    Date of Patent: August 15, 1989
    Assignee: Bull HN Information Systems Inc.
    Inventors: Joseph G. DiChiara, Harry W. Brown, Joseph M. Valentine