Patents by Inventor Jeffrey R. Cantrall

Jeffrey R. Cantrall 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 monitoring fouling in commercial waters
    Patent number: 5281537
    Abstract: A fouling monitor and method for sensing fouling in commercial waters and for differentiating between microbiological fouling and chemical fouling, which includes a dissolved oxygen probe disposed in a slip stream of water and means for providing an abundance of oxygen and nutrient to the microbial activity whereby a decrease in dissolved oxygen level is sensed due to the increased respiration of the microbes when microbiological fouling occurs. A polyester screen is mounted over the sensing end of the dissolved oxygen probe to promote microbiological fouling by providing a means for engaging the microbes and to enhance differentiation between the biological component and the non-viable/chemical component.
    Type: Grant
    Filed: December 22, 1992
    Date of Patent: January 25, 1994
    Assignee: Nalco Chemical Company
    Inventors: Linda R. Robertson, Jeffrey R. Cantrall
  • Apparatus for monitoring fouling in commercial waters
    Patent number: 5190728
    Abstract: A fouling monitor and method for sensing fouling in commercial waters and for differentiating between microbiological fouling and chemical fouling, which includes a dissolved oxygen probe disposed in a slip stream of water and means for providing an abundance of oxygen and nutrient to the microbial activity whereby a decrease in dissolved oxygen level is sensed due to the increased respiration of the microbes when microbiological fouling occurs. A polyester screen is mounted over the sensing end of the dissolved oxygen probe to promote microbiological fouling by providing a means for engaging the microbes and to enhance differentiation between the biological component and the non-viable/chemical component.
    Type: Grant
    Filed: October 21, 1991
    Date of Patent: March 2, 1993
    Assignee: Nalco Chemical Company
    Inventors: Linda R. Robertson, Jeffrey R. Cantrall