Patents by Inventor Bruce Oberhardt

Bruce Oberhardt 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).

  • Element and method for performing biological assays accurately, rapidly and simply
    Publication number: 20020119486
    Abstract: An element and method for easily performing liquid assays are disclosed. The element uses capillary action to draw a predetermined volume of a liquid sample into a reaction chamber charged with reagent, where reaction between the liquid sample and the reagent is monitored.
    Type: Application
    Filed: March 6, 2002
    Publication date: August 29, 2002
    Applicant: CARDIOVASCULAR DIAGNOSTICS, INC.
    Inventor: Bruce Oberhardt
  • Apparatus for performing assays on liquid samples accurately, rapidly and simply
    Patent number: 6197494
    Abstract: An element and method for easily performing liquid assays are disclosed. The element uses capillary action to draw a predetermined volume of a liquid sample into a reaction chamber charged with reagent, where reaction between the liquid sample and the reagent is monitored.
    Type: Grant
    Filed: March 18, 1997
    Date of Patent: March 6, 2001
    Assignee: Cardiovascular Diagnostics, Inc.
    Inventor: Bruce Oberhardt
  • Immunoassay system using forced convection currents
    Patent number: 5658723
    Abstract: An analytical system for performing an immunoassay is provided wherein the system contains an element that uses capillary action to draw a sample into a reaction chamber charged with reagent containing an immobilized antibody or immobilized antigen, where reaction between the liquid sample and the reagent is monitored, and optionally contains a method for controlling the moment that transport of the sample from the sample well to the reaction chamber is initiated.
    Type: Grant
    Filed: May 23, 1994
    Date of Patent: August 19, 1997
    Assignee: Cardiovascular Diagnostics, Inc.
    Inventor: Bruce Oberhardt
  • Reaction system element and method for performing prothrombin time assay
    Patent number: 4849340
    Abstract: An element and method for easily performing liquid assays are disclosed. The element uses capillary action to draw a predetermined volume of a liquid sample into a reaction chamber charged with reagent, where reaction between the liquid sample and the reagent is monitored.
    Type: Grant
    Filed: April 3, 1987
    Date of Patent: July 18, 1989
    Assignee: Cardiovascular Diagnostics, Inc.
    Inventor: Bruce Oberhardt
  • Assay card for an assay chamber
    Patent number: D501678
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: February 8, 2005
    Assignee: Cardiovascular Diagnostics, Inc.
    Inventor: Bruce Oberhardt