Patents by Inventor John Duvall-Jisha

John Duvall-Jisha 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 of detecting the presence of polycyclic aromatic hydrocarbons
    Patent number: 9127301
    Abstract: Described herein is a rapid coupled enzymatic assay to detect polycyclic aromatic hydrocarbon (PAH) compounds in samples. The method uses a detection composition that includes: a buffered solution comprising NADH; naphthalene dioxygenase, naphthalene 1,2-dihydroxy-1,2-dihydronaphthalene dehydrogenase, and 1,2-dihydroxynaphthalene dioxygenase. The presence of PAH is determined by noting a color change of the detection composition, either visually or spectrophotometrically.
    Type: Grant
    Filed: November 21, 2013
    Date of Patent: September 8, 2015
    Assignee: BIOO SCIENTIFIC CORPORATION
    Inventors: Joseph F. Krebs, John Duvall-Jisha, Sol Resnick
  • RAPID DETECTION OF PETROLEUM IN FOOD
    Publication number: 20140154723
    Abstract: Described herein is a rapid coupled enzymatic assay to detect polycyclic aromatic hydrocarbon (PAH) compounds in samples. The method uses a detection composition that includes: a buffered solution comprising NADH; naphthalene dioxygenase, naphthalene 1,2-dihydroxy-1,2-dihydronaphthalene dehydrogenase, and 1,2-dihydroxynaphthalene dioxygenase. The presence of PAH is determined by noting a color change of the detection composition, either visually or spectrophotometrically.
    Type: Application
    Filed: November 21, 2013
    Publication date: June 5, 2014
    Inventors: Joseph F. Krebs, John Duvall-Jisha, Sol Resnick