Patents by Inventor Mark S. Geisberg

Mark S. Geisberg 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).

  • Caffeine detection via internally-referenced two part assay
    Patent number: 8137984
    Abstract: Methods, compositions, and apparatus for detecting the presence of caffeine in a liquid sample are provided. In certain embodiments, an internally referenced competitive assay allows a very precise determination of a threshold value of caffeine for use in semiquantitative types of ligand-receptor assays. By using a detection means that participates in two assays, sensitivity is doubled in the maximum sensitivity range and the range can be adjusted to match the predicted concentration range of an analyte. This format and the materials described herein allow the assay to complete within three minutes. In addition, this format accommodates common attributes of liquid samples for detecting caffeine, such as the inclusion of milk or sugar in a coffee-type beverage.
    Type: Grant
    Filed: May 11, 2009
    Date of Patent: March 20, 2012
    Assignee: PurpleCow LLC.
    Inventors: Anaflor Q. Graham, Carralee Hathaway, Mark S. Geisberg
  • Chromatographic test strips for one or more analytes
    Patent number: 7919331
    Abstract: The invention describes immunochromatographic protocols in which one or more analytes, such as a bacteria or virus, can be assayed utilizing a “sandwich” complex.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: April 5, 2011
    Assignee: Silver Lake Research Corporation
    Inventor: Mark S. Geisberg
  • Caffeine Detection Via Internally-Referenced Two Part Assay
    Publication number: 20090215199
    Abstract: Methods, compositions, and apparatus for detecting the presence of caffeine in a liquid sample are provided. In certain embodiments, an internally referenced competitive assay allows a very precise determination of a threshold value of caffeine for use in semiquantitative types of ligand-receptor assays. By using a detection means that participates in two assays, sensitivity is doubled in the maximum sensitivity range and the range can be adjusted to match the predicted concentration range of an analyte. This format and the materials described herein allow the assay to complete within three minutes. In addition, this format accommodates common attributes of liquid samples for detecting caffeine, such as the inclusion of milk or sugar in a coffee-type beverage.
    Type: Application
    Filed: May 11, 2009
    Publication date: August 27, 2009
    Applicant: PURPLECOW LLC
    Inventors: Anaflor Q. Graham, Carralee Hathaway, Mark S. Geisberg
  • Caffeine detection using internally referenced competitive assays
    Patent number: 7569396
    Abstract: Methods, compositions, and apparatus for detecting the presence of caffeine in a liquid sample are provided. In certain embodiments, an internally referenced competitive assay allows a very precise determination of a threshold value of caffeine for use in semiquantitative types of ligand-receptor assays. By using a detection means that participates in two assays, sensitivity is doubled in the maximum sensitivity range and the range can be adjusted to match the predicted concentration range of an analyte. This format and the materials described herein allow the assay to complete within three minutes. In addition, this format accommodates common attributes of liquid samples for detecting caffeine, such as the inclusion of milk or sugar in a coffee-type beverage.
    Type: Grant
    Filed: September 8, 2006
    Date of Patent: August 4, 2009
    Assignee: PurpleCow LLC
    Inventors: Anaflor Q. Graham, Carralee Hathaway, Mark S. Geisberg
  • Chromatographic Test Strips for One or More Analytes
    Publication number: 20080153176
    Abstract: The invention describes immunochromatographic protocols in which one or more analytes, such as a bacteria or virus, can be assayed utilizing a “sandwich” complex.
    Type: Application
    Filed: December 20, 2007
    Publication date: June 26, 2008
    Inventor: Mark S. Geisberg
  • Internally referenced competitive assays
    Patent number: 6649418
    Abstract: The present invention provides internally calibrated competitive assays for use on a solid support. Additionally, the invention provides a method of using such assays.
    Type: Grant
    Filed: July 30, 2001
    Date of Patent: November 18, 2003
    Assignee: Silver Lake Research Corporation
    Inventor: Mark S. Geisberg
  • Internally referenced competitive assays
    Patent number: 6368875
    Abstract: The present invention provides internally calibrated competitive assays for use on a solid support. Additionally, the invention provides a method of using such assays.
    Type: Grant
    Filed: May 24, 2000
    Date of Patent: April 9, 2002
    Inventor: Mark S. Geisberg
  • Internally referenced competitive assays
    Patent number: 6287875
    Abstract: The present invention provides internally calibrated competitive assays for use on a solid support. Additionally, the invention provides a method of using such assays.
    Type: Grant
    Filed: May 24, 2000
    Date of Patent: September 11, 2001
    Assignee: Silver Lake Corporation
    Inventor: Mark S. Geisberg
  • Internally referenced competitive assays
    Patent number: 6103536
    Abstract: The present invention provides internally calibrated competitive assays for use on a solid support. Additionally, the invention provides a method of using such assays.
    Type: Grant
    Filed: May 1, 1998
    Date of Patent: August 15, 2000
    Assignee: Silver Lake Research Corporation
    Inventor: Mark S. Geisberg