Patents by Inventor William P. Pfaff

William P. Pfaff 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).

  • Optical digital environment compliance system
    Patent number: 6597799
    Abstract: A method and apparatus for analyzing a picture of an effluent such as a smoke plume or dust cloud to determine the opacity of the effluent. The picture of the effluent is first broken down into pixels. Each pixel corresponding to the effluent is identified and the color of each effluent pixel is analyzed to calculate the opacity of that effluent pixel. An opacity value for the entire effluent is extrapolated based on the opacity values of each effluent pixel.
    Type: Grant
    Filed: June 19, 2000
    Date of Patent: July 22, 2003
    Assignee: Scientech, Inc.
    Inventors: William P. Pfaff, Jay Stretch