Patents by Inventor James L. Di Guiseppi

James L. Di Guiseppi 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).

  • Apparatus and method for detection of microorganisms
    Patent number: 5164796
    Abstract: An instrument for monitoring the color change of an indicator element sealed within a sterile vessel and exhibiting a color change in response to a change in the pH of CO.sub.2 level within the sterile vessel as a result of microbacterial growth within a specimen contained in the sterile vessel. The present invention includes means for continuously monitoring the absolute value of the pH and or CO.sub.2 level within the vessel and or monitoring the rate of change of the absolute value of the pH level.
    Type: Grant
    Filed: December 1, 1991
    Date of Patent: November 17, 1992
    Assignee: Akzo N.V.
    Inventors: James L. Di Guiseppi, Thurman C. Thorpe
  • Device for detecting microorganisms
    Patent number: 4945060
    Abstract: An instrument and a sealable, sterilizable vessel for detecting the presence of microorganisms in a specimen, the vessel containing a liquid culture medium and a sensor means with an indicator medium therein. Changes in the indicator medium resulting from pH change or change in CO.sub.2 concentration in the medium are detected from outside the vessel.
    Type: Grant
    Filed: March 15, 1988
    Date of Patent: July 31, 1990
    Assignee: Akzo N. V.
    Inventors: James E. Turner, Thurman C. Thorpe, James L. Di Guiseppi, Richard C. Driscoll