Patents by Inventor John Alan Duff

John Alan Duff 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).

  • Conductivity Measurement of Fluids
    Publication number: 20160377568
    Abstract: A product is provided into a first end of a conduit so that the product flows toward a second end of the conduit. The conduit may include a first pair of probes attached at a first location and a second pair of probes at a second location. The product's conductivity in the conduit at the first location is monitored using the first set of probes, and the product's conductivity at the second location is monitored using the second set of probes. An marker material is introduced into an entry port of the conduit so that the marker material flows with the product. The marker material's conductivity is different than the products conductivity. At a first time, the first set of probes detects the conductivity of the product has changed due to the introduction of the marker material, and at a second time, the second set of probes also detects such change.
    Type: Application
    Filed: June 28, 2016
    Publication date: December 29, 2016
    Inventors: Michael Druga, John Alan Duff, Josip Simunovic
  • Conductivity measurement of fluids
    Patent number: 9404952
    Abstract: A product is provided into a first end of a conduit so that the product flows toward a second end of the conduit. The conduit may include a first pair of probes attached at a first location and a second pair of probes at a second location. The product's conductivity in the conduit at the first location is monitored using the first set of probes, and the product's conductivity at the second location is monitored using the second set of probes. An marker material is introduced into an entry port of the conduit so that the marker material flows with the product. The marker material's conductivity is different than the product's conductivity. At a first time, the first set of probes detects the conductivity of the product has changed due to the introduction of the marker material, and at a second time, the second set of probes also detects such change.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: August 2, 2016
    Assignee: Aseptia, Inc.
    Inventors: Michael Druga, John Alan Duff, Josip Simunovic
  • CONDUCTIVITY MEASUREMENT OF FLUIDS
    Publication number: 20140266267
    Abstract: A product is provided into a first end of a conduit so that the product flows toward a second end of the conduit. The conduit may include a first pair of probes attached at a first location and a second pair of probes at a second location. The product's conductivity in the conduit at the first location is monitored using the first set of probes, and the product's conductivity at the second location is monitored using the second set of probes. An marker material is introduced into an entry port of the conduit so that the marker material flows with the product. The marker material's conductivity is different than the product's conductivity. At a first time, the first set of probes detects the conductivity of the product has changed due to the introduction of the marker material, and at a second time, the second set of probes also detects such change.
    Type: Application
    Filed: October 4, 2012
    Publication date: September 18, 2014
    Applicant: Aseptia, Inc.
    Inventors: Michael Druga, John Alan Duff, Josip Simunovic