Patents by Inventor Jonathan G. PRESSMAN

Jonathan G. PRESSMAN 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).

  • Solid state amperometric chloramine sensor
    Patent number: 9586814
    Abstract: A monochloramine microsensor includes an elongated housing defining a central axis and an open interior and having a capillary opening at one end. A semi-permeable membrane covers the capillary opening, the semi-permeable membrane allowing diffusion of chloramines there-through while preventing water from entering into the interior of the housing. A chloramine sensitive element in the form of a wire, fiber or nanotube is mounted within the housing, the chloramine sensitive element, when used in conjunction with an anode, outputs current in an amount proportional to the concentration of chloramine present in a liquid sample in which the chloramine sensitive element is immersed. The chloramine sensitive element extends along a length of the central axis to a first end adjacent to and spaced from the semi-permeable membrane. The chloramine sensitive element is a gold wire, a platinum wire, a carbon fiber or a carbon nanotube.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: March 7, 2017
    Assignee: The United States of America as represented by the Administrator of the Environmental Protection Agency
    Inventors: Jonathan G. Pressman, Woo Hyoung Lee, David G. Wahman
  • SOLID STATE AMPEROMETRIC CHLORAMINE SENSOR
    Publication number: 20150014165
    Abstract: A monochloramine microsensor includes an elongated housing defining a central axis and an open interior and having a capillary opening at one end. A semi-permeable membrane covers the capillary opening, the semi-permeable membrane allowing diffusion of chloramines there-through while preventing water from entering into the interior of the housing. A chloramine sensitive element in the form of a wire, fiber or nanotube is mounted within the housing, the chloramine sensitive element, when used in conjunction with an anode, outputs current in an amount proportional to the concentration of chloramine present in a liquid sample in which the chloramine sensitive element is immersed. The chloramine sensitive element extends along a length of the central axis to a first end adjacent to and spaced from the semi-permeable membrane. The chloramine sensitive element is a gold wire, a platinum wire, a carbon fiber or a carbon nanotube.
    Type: Application
    Filed: July 11, 2013
    Publication date: January 15, 2015
    Inventors: Jonathan G. PRESSMAN, Woo Hyoung LEE, David G. WAHMAN