Patents by Inventor James Tusa

James Tusa 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).

  • Dry optical-chemical carbon-dioxide sensor
    Publication number: 20090004751
    Abstract: The present invention relates to a device for determining carbon dioxide in a gaseous or liquid sample, comprising: a polymer matrix and an indicator embedded in the polymer matrix, wherein the indicator comprises a pH-sensitive dye and a lipophilic, metal cation-ionophore complex, and wherein an anion of the pH-sensitive dye and the metal cation-ionophore complex form an ion-pair which is soluble in the polymer matrix.
    Type: Application
    Filed: February 27, 2008
    Publication date: January 1, 2009
    Applicant: ROCHE DIAGNOSTICS OPERATIONS, INC.
    Inventors: Marco Jean-Pierre Leiner, James Tusa, Ingo Klimant
  • Nanoparticles for optical sensors
    Publication number: 20050019849
    Abstract: The present invention concerns a polymer layer for a sensor, wherein the polymer layer has nanoparticles embedded therein which impart to the polymer layer recognizing properties as well as transducer properties, a sensor comprising such layer and the use of the sensor for detecting and/or quantifying a target analyte.
    Type: Application
    Filed: July 9, 2004
    Publication date: January 27, 2005
    Inventors: Valerie Desprez, Norbert Oranth, Jurgen Spinke, James Tusa