Patents by Inventor Edward L. Howlette

Edward L. Howlette 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).

  • Security system for computer software
    Patent number: 4959861
    Abstract: The disclosure relates to a security system for computer software. A plug-in circuit accompanies each legitimately purchased softward package. The software includes a communication system to decode signals generated by the plug-in circuit. Where the appropriate signal is sensed the program is executed. If the proper code is not sensed the program shuts down.
    Type: Grant
    Filed: July 13, 1988
    Date of Patent: September 25, 1990
    Inventor: Edward L. Howlette