Patents by Inventor Scott P. Bennett

Scott P. Bennett 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).

  • Patent number: 5868859
    Abstract: The creation of a substantial volume of foam on the surface of an aqueous medium can reduce the apparent thermal IR emission substantially when compared to that of the aqueous medium free of foam. This difference in temperature (infrared emission) can be used to control a defoaming process or the addition of a defoaming agent to control foam in the aqueous medium. The apparent thermal infrared emission of foam is less than that of the aqueous medium. As the thermal IR emissions drop as foam develops, the difference between the apparent temperature of the foam and the temperature of aqueous medium increases. Such a difference in temperature can be used to control use of a defoaming process or agent. As the foam volume is reduced, the addition of a defoaming composition is substantially reduced or stopped. During the control method, a predetermined limit is established at which the defoaming process or composition is introduced into the aqueous medium.
    Type: Grant
    Filed: October 11, 1996
    Date of Patent: February 9, 1999
    Assignee: Ecolab Inc.
    Inventors: Robert D. Hei, Keith D. Lokkesmoe, Jay T. Kummet, Scott P. Bennett
  • Patent number: 5683724
    Abstract: The invention is a process for preventing microbial growth in aqueous streams by applying a C.sub.2 -C.sub.12 percarboxylic acid or mixture of such acids to the aqueous stream and to an automated dispensing system for the percarboxylic acids based on a correlation between oxidation-reduction-potential and anti-microbial levels of the aqueous stream. Generally, the process of the invention is applicable to aqueous streams used in any number of applications such as the application of streams for the transport of food products, e.g. fruits or vegetables, into the processing environment and through the various steps of processing.
    Type: Grant
    Filed: January 17, 1997
    Date of Patent: November 4, 1997
    Assignee: Ecolab Inc.
    Inventors: Robert D. P. Hei, Timothy A. Gutzmann, Keith D. Lokkesmoe, Scott P. Bennett, Kimberly L. Person Hei