Patents by Inventor Todd Guion

Todd Guion 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 for automatic electro-optical chemical assay determination
    Patent number: 5851488
    Abstract: An electro-optical instrument for measuring a quantitative physical parameter of a sample in a diagnostic cartridge is provided.
    Type: Grant
    Filed: February 29, 1996
    Date of Patent: December 22, 1998
    Assignee: Biocircuits Corporation
    Inventors: Tom Saul, Henry L. Schwartz, Todd Guion, Hans O. Ribi
  • Multilayered bioelectronic sensors
    Patent number: 5571568
    Abstract: Bioelectronic sensors are provided employing a thin surfactant polymeric electrically conducting layer to which may be bound members of specific binding pairs. Binding of an analyte or a reagent to the specific binding pair member layer may change the electrical, optical, or structural properties of the layer for measurement of analyte. The change in the polymeric layer provides for a sensitive measurement.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: November 5, 1996
    Assignee: Biocircuits Corporation
    Inventors: Hans O. Ribi, Todd Guion, Paul T. Shafer
  • Analyte detection with multilayered bioelectronic conductivity sensors
    Patent number: 5491097
    Abstract: Methods are provided for the detection of an analyte in a sample using a bioelectronic sensor comprising a thin surfactant polymeric electrically conducting layer to which members of specific binding pairs are bound. Specific binding of analyte or analyte competitor to the bound specific binding pair member results in a change in the conductivity of the polymer. The resultant change in conductivity is related to the presence of analyte in the sample.
    Type: Grant
    Filed: February 28, 1994
    Date of Patent: February 13, 1996
    Assignee: Biocircuits Corporation
    Inventors: Hans O. Ribi, Todd Guion, Paul T. Shafer
  • Multi-optical detection system
    Patent number: 5427915
    Abstract: Apparatus and methods are provided for the detection of analytes. A polyunsaturated polymerized lipid layer is employed, which is anisotropic, has a member of a specific binding pair bound to an end of the lipids, and whose optical characteristics are modified upon complex formation between the specific binding pair member and its complementary member. By providing for polarized light, linear and/or circular, one can detect the presence of complex formation by the change in the optical characteristics of the film. Polarizers, analyzers, and wave plates are employed for providing for a light signal which can be analyzed and related to the presence of an analyte in a sample.
    Type: Grant
    Filed: August 9, 1993
    Date of Patent: June 27, 1995
    Assignee: Biocircuits Corporation
    Inventors: Hans O. Ribi, Todd A. Guion, Joseph R. Murdoch, John C. Scott, Victor Pan, Glenda L. Choate
  • Multi-optical detection system
    Patent number: 5268305
    Abstract: Apparatus and methods are provided for the detection of analytes. A polyunsaturated polymerized lipid layer is employed, which is anisotropic, has a member of a specific binding pair bound to an end of the lipids, and whose optical characteristics are modified upon complex formation between the specific binding pair member and its complementary member. By providing for polarized light, linear and/or circular, one can detect the presence of complex formation by the change in the optical characteristics of the film. Polarizers, analyzers, and wave plates are employed for providing for a light signal which can be analyzed and related to the presence of an analyte in a sample.
    Type: Grant
    Filed: December 13, 1990
    Date of Patent: December 7, 1993
    Assignee: Biocircuits Corporation
    Inventors: Hans O. Ribi, Todd A. Guion, Joseph R. Murdoch, John C. Scott, Victor Pan, Glenda L. Choate