Patents by Inventor Shigekazu Nakayama

Shigekazu Nakayama 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).

  • Method for preventing unauthorized copy application program execution, its program, its program recording apparatus, and its program recording medium
    Publication number: 20040133519
    Abstract: It is an object of the present invention to provide a method for preventing the execution of an illicitly duplicated application program, that prevents the utilization of a duplicate produced by illicit copying, and, if the type of the recording medium that is being used is identical to the normal medium type where the application program is written, then the recording medium that is being used is a genuine product and the normal execution of the main program is conducted, but if the recording medium that is being used is an illicit copy obtained by copying on a recording medium of type different from the genuine product, the non-identity processing program is executed.
    Type: Application
    Filed: March 9, 2004
    Publication date: July 8, 2004
    Inventors: Shigekazu Nakayama, Junichi Taniguchi