Patents by Inventor Jan W. Pawlak

Jan W. Pawlak 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).

  • Enzyme substrate delivery and product registration in one step enzyme immunoassays
    Publication number: 20040152207
    Abstract: One-step enzyme immunoassays in which enzyme-antibody conjugate or label and enzyme substrate are separated until separation of bound and free enzyme conjugate or label is complete. This separation is accomplished by using variable flow paths, immobilization of substrate at the test line, placement of substrate in a sac or association with a particle label, enzyme product chemical capture, delay zone dissolution and protected enzyme substrates.
    Type: Application
    Filed: January 22, 2004
    Publication date: August 5, 2004
    Inventors: Alan M. Nelson, Jan W. Pawlak, Allan D. Pronovost
  • Enzyme substrate delivery and product registration in one step enzyme immunoassays
    Patent number: 6706539
    Abstract: One-step enzyme immunoassays in which enzyme-antibody conjugate or label and enzyme substrate are separated until separation of bound and free enzyme conjugate or label is complete. This separation is accomplished by using variable flow paths, immobilization of substrate at the test line, placement of substrate in a sac or association with a particle label, enzyme product chemical capture, delay zone dissolution and protected enzyme substrates.
    Type: Grant
    Filed: August 29, 2001
    Date of Patent: March 16, 2004
    Assignee: Quidel Corporation
    Inventors: Alan M. Nelson, Jan W. Pawlak, Allan D. Pronovost
  • Enzyme substrate delivery and product registration in one step enzyme immunoassays
    Publication number: 20020025541
    Abstract: One-step enzyme immunoassays in which enzyme-antibody conjugate or label and enzyme substrate are separated until separation of bound and free enzyme conjugate or label is complete. This separation is accomplished by using variable flow paths, immobilization of substrate at the test line, placement of substrate in a sac or association with a particle label, enzyme product chemical capture, delay zone dissolution and protected enzyme substrates.
    Type: Application
    Filed: August 29, 2001
    Publication date: February 28, 2002
    Inventors: Alan M. Nelson, Jan W. Pawlak, Allan D. Pronovost
  • Enzyme substrate delivery and product registration in one step enzyme immunoassays
    Patent number: 6306642
    Abstract: One-step enzyme immunoassays in which enzyme-antibody conjugate or label and enzyme substrate are separated until separation of bound and free enzyme conjugate or label is complete. This separation is accomplished by using variable flow paths, immobilization of substrate at the test line, placement of substrate in a sac or association with a particle label, enzyme product chemical capture, delay zone dissolution and protected enzyme substrates.
    Type: Grant
    Filed: November 24, 1997
    Date of Patent: October 23, 2001
    Assignee: Quidel Corporation
    Inventors: Alan M. Nelson, Jan W. Pawlak, Allan D. Pronovost
  • Direct stain specific binding assays for microorganisms
    Patent number: 5741662
    Abstract: The present invention provides specific binding solid phase assay methods and kits for the detection of the presence or absence of a microorganism by directly staining the microorganism and specifically capturing the stained microorganism on a solid support. The methods find particular utility in the detection of Candida. The methods may simultaneously detect the presence or absence of multiple microorganisms.
    Type: Grant
    Filed: December 18, 1995
    Date of Patent: April 21, 1998
    Assignee: Quidel Corporation
    Inventors: Randall D. Madsen, Lorraine S. Bautista, Jan W. Pawlak, Allan D. Pronovost
  • Assay device for one step detection of analyte
    Patent number: 5686315
    Abstract: A "one step" device for the detection of analytein clinical assays is disclosed. A visible label comprising a visible moiety and a ligand that binds to or competes with analyte is contained in a fluid conducting membrane or prefilter; and the analyte and associated ligand are conducted by the flow of sample into a detection zone. The detection zone contains a capture reagent that binds to label or to analyte bound to label.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: November 11, 1997
    Assignee: Quidel Corporation
    Inventors: Allan D. Pronovost, Cathy A. Bacquet, Jan W. Pawlak, Theodore T. Sand
  • Stable phosphatase substrate composition
    Patent number: 4892817
    Abstract: A stabilized phosphatase substrate composition is provided comprising an indoxl phosphate, a tetrazolium salt, and a water-soluble ferricyanide/ferrocyanide salt. When present as a solution, the composition also contains a buffer that produces a pH in a range of from about 8 to about 11.
    Type: Grant
    Filed: September 21, 1987
    Date of Patent: January 9, 1990
    Assignee: Biogenex Laboratories
    Inventor: Jan W. Pawlak