Patents by Inventor Chris D. Geddes

Chris D. Geddes 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).

  • Publication number: 20140224641
    Abstract: The present invention relates to enhancement of detectable emissions from carbon nanodots or variants thereof by using the techniques of MEF to further enhance carbon nanodot brightness, photostability, and thus, potentially detectability in biological imaging applications by using plasmon supporting materials, such as silver island films and positioning of the carbon nanodots an optimal distance from the plasmon supporting materials.
    Type: Application
    Filed: March 19, 2012
    Publication date: August 14, 2014
    Inventor: CHRIS D. GEDDES
  • Publication number: 20140206075
    Abstract: In the present invention, it is demonstrated for the first time, the influence of electrical current on the ability of surface plasmons to amplify fluorescence signatures. An applied direct current across silver island films (SiFs) of low electrical resistance perturbs the fluorescence enhancement of close-proximity fluorophores. For a given applied current, surface plasmons in “just-continuous” low resistance films are sparsely available for fluorophore dipole coupling and hence the enhanced fluorescence is gated as a function of the applied current.
    Type: Application
    Filed: March 24, 2014
    Publication date: July 24, 2014
    Applicant: UNIVERSITY OF MARYLAND, BALTIMORE COUNTY
    Inventor: CHRIS D. GEDDES
  • Patent number: 8759110
    Abstract: The present invention relates to metallic-surface detection systems for determining target substances including free bilirubin in neonatal serum in the presence of a predominantly high background of bilirubin bound Human Serum Albumin (HSA) or sensing and isolating target nucleotide sequences wherein a fluorescence signal is enhanced by close proximity of the target substances near metallic surfaces.
    Type: Grant
    Filed: May 10, 2011
    Date of Patent: June 24, 2014
    Assignee: University of Maryland, Baltimore County
    Inventor: Chris D. Geddes
  • Patent number: 8735175
    Abstract: The present invention relates to the use of multiple different light emitting molecules that emit different and detectable emission signals to provide systems and methods to detect different target products in a single assay sample, wherein the different light emitting molecules are positioned an optimal distance from metallic particles thereby enhancing emissions. Preferably, the systems and methods further comprise use of either microwave or sonic energy to increase binding reactions, timing of such reactions within the assay sample and reduce background non-specific biological absorption.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: May 27, 2014
    Inventor: Chris D. Geddes
  • Patent number: 8722428
    Abstract: The present invention provides for metallic nanostructures or nanoburgers comprising a dielectric layer positioned between metallic layers and their use in metal enhanced emissions systems to enhance emissions from fluorophores, including intrinsic and extrinsic; luminophores; bioluminescent species and/or chemiluminescent species. The multilayer nanoburgers exhibit several distinctive properties including significantly enhanced intensity of emissions, decreased lifetime and increased photostability by simply varying the thickness of the dielectric layer while maintaining a constant thickness of the two metallic layers on opposite sides of the dielectric layer.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: May 13, 2014
    Assignee: University of Maryland, Baltimore County
    Inventor: Chris D. Geddes
  • Patent number: 8679855
    Abstract: In the present invention, it is demonstrated for the first time, the influence of electrical current on the ability of surface plasmons to amplify fluorescence signatures. An applied direct current across silver island films (SiFs) of low electrical resistance perturbs the fluorescence enhancement of close-proximity fluorophores. For a given applied current, surface plasmons in “just-continuous” low resistance films are sparsely available for fluorophore dipole coupling and hence the enhanced fluorescence is gated as a function of the applied current.
    Type: Grant
    Filed: March 1, 2009
    Date of Patent: March 25, 2014
    Assignee: University of Maryland, Baltimore County
    Inventor: Chris D. Geddes
  • Patent number: 8679402
    Abstract: The present invention provides for increasing fluorescence detection in surface assay systems while increasing kinetics of a bioreaction therein by providing low-power microwaves to irradiate metallic materials within the system in an amount sufficient to increase heat thereby affecting the kinetics of a bioreaction therein.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: March 25, 2014
    Assignee: University of Maryland, Baltimore County
    Inventor: Chris D. Geddes
  • Publication number: 20140030700
    Abstract: The present invention relates to an assay for the determination of a microorganism including a lysing chamber having triangular shaped metallic structures wherein the apexes of two triangles are arranged in alignment and forming a reactive zone for placement of the microorganism and lysing by microwave energy for exposing and isolating a target polynucleotide sequence. The isolated target polynucleotide sequence is introduced to an assay system for contact with polynucleotides which are complimentary to the isolated target polynucleotide sequence. Fluorophore-labeled capture polynucleotides are added for hybridizing to any bound target polynucleotide. Bound target polynucleotides are detected by metal enhanced fluorescence.
    Type: Application
    Filed: December 1, 2011
    Publication date: January 30, 2014
    Applicant: UNIVERSITY OF MARYLAND, BALTIMORE COUNTY
    Inventor: Chris D. Geddes
  • Patent number: 8618505
    Abstract: The present invention relates to detection systems and methods that detect fluorescence, luminescence, chemiluminescence or phosphorescence signatures in the form of an electrical signal conducted and emitted from metallic containing surfaces. Thus, the present invention provides for detecting fluorescence digitally and directly without the need for expensive detectors.
    Type: Grant
    Filed: September 17, 2009
    Date of Patent: December 31, 2013
    Assignee: University of Maryland, Baltimore County
    Inventor: Chris D. Geddes
  • Patent number: 8569502
    Abstract: Quaternary nitrogen heterocyclic boronic acid-containing compounds are described, which are sensitive to glucose and fructose, as well as a variety of other physiologically important analytes, such as aqueous chloride and iodide, and a method of using the compounds. Also disclosed is a contact lens doped with the quaternary nitrogen heterocyclic boronic acid-containing compound, and a method of using the doped contact lens to measure the concentration of analyte in tears under physiological conditions.
    Type: Grant
    Filed: December 24, 2012
    Date of Patent: October 29, 2013
    Inventors: Chris D. Geddes, Ramachandram Badugu, Joseph R. Lakowicz
  • Publication number: 20130210158
    Abstract: Quaternary nitrogen heterocyclic boronic acid-containing compounds are described, which are sensitive to glucose and fructose, as well as a variety of other physiologically important analytes, such as aqueous chloride and iodide, and a method of using the compounds. Also disclosed is a contact lens doped with the quaternary nitrogen heterocyclic boronic acid-containing compound, and a method of using the doped contact lens to measure the concentration of analyte in tears under physiological conditions.
    Type: Application
    Filed: December 24, 2012
    Publication date: August 15, 2013
    Inventors: CHRIS D. GEDDES, RAMACHANDRAM BADUGU, JOSEPH R. LAKOWICZ
  • Publication number: 20130156938
    Abstract: The present invention relates to a method for fabricating a new silver coating/nanoparticle scaffold that significantly enhances the luminescence of near-field fluorophores via the metal enhanced fluorescence phenomenon. The silver coating/nanoparticle scaffold can be used for numerous applications in metal-enhanced fluorescence.
    Type: Application
    Filed: September 26, 2012
    Publication date: June 20, 2013
    Inventors: CHRIS D. GEDDES, ANATOLIY I. DRAGAN
  • Publication number: 20130137167
    Abstract: The present invention relates to a method of imaging structures and features using plasmonic emissions from metallic surfaces caused by chemiluminescence based chemical and biological reactions wherein imaging of the reactions is enhanced by the use of microwave energy and further enhanced by using metallic geometric structures for spatially and temporally controlling the biological and chemical reactions.
    Type: Application
    Filed: August 26, 2011
    Publication date: May 30, 2013
    Inventors: CHRIS D. GEDDES, MICHAEL PREVITE
  • Publication number: 20130115710
    Abstract: The present invention provides for the surface plasmon-enhancement of long lived luminescent compounds, thereby providing for methods and systems having enhanced and controllable rates of the radiative emission of such relaxation of long lived luminescent compounds. The present invention achieves acceleration of the radiative processes by the interaction of the long lived luminescent compounds with surface plasmons of the metal surfaces.
    Type: Application
    Filed: May 11, 2011
    Publication date: May 9, 2013
    Inventor: Chris D. Geddes
  • Publication number: 20130102770
    Abstract: The present invention relates to metallic-surface detection systems for determining target substances including free bilirubin in neonatal serum in the presence of a predominantly high background of bilirubin bound Human Serum Albumin (HSA) or sensing and isolating target nucleotide sequences wherein a fluorescence signal is enhanced by close proximity of the target substances near metallic surfaces.
    Type: Application
    Filed: May 10, 2011
    Publication date: April 25, 2013
    Inventor: CHRIS D. GEDDES
  • Publication number: 20130084628
    Abstract: The present invention provides for increasing fluorescence detection in surface assay systems while increasing kinetics of a bioreaction therein by providing low-power microwaves to irradiate metallic materials within the system in an amount sufficient to increase heat thereby affecting the kinetics of a bioreaction therein.
    Type: Application
    Filed: November 27, 2012
    Publication date: April 4, 2013
    Inventor: Chris D. GEDDES
  • Patent number: 8404450
    Abstract: The present invention relates to an optical imaging system communicatively connected to a microwave energy producing source wherein the combination provides for increases in chemical reaction times and the ability to monitor the reactions in real time with sufficient resolution to view the location of intracellular components labeled with luminescent molecules as well as interaction with other biomolecules and responses to localized environmental variables in living cells and tissues during the application of a microwave field.
    Type: Grant
    Filed: June 4, 2008
    Date of Patent: March 26, 2013
    Assignee: University of Maryland, Baltimore County
    Inventors: Chris D. Geddes, Michael J. R. Previte
  • Publication number: 20130059316
    Abstract: The present invention relates to detection systems and methods that detect fluorescence, luminescence, chemiluminescence or phosphorescence signatures in the form of an electrical signal conducted and emitted from metallic containing surfaces. Thus, the present invention provides for detecting fluorescence digitally and directly without the need for expensive detectors.
    Type: Application
    Filed: December 14, 2010
    Publication date: March 7, 2013
    Inventor: Chris D. Geddes
  • Publication number: 20130020503
    Abstract: The present invention provides for metallic nanostructures or nanoburgers comprising a dielectric layer positioned between metallic layers and their use in metal enhanced emissions systems to enhance emissions from fluorophores, including intrinsic and extrinsic; luminophores; bioluminescent species and/or chemiluminescent species. The multilayer nanoburgers exhibit several distinctive properties including significantly enhanced intensity of emissions, decreased lifetime and increased photostability by simply varying the thickness of the dielectric layer while maintaining a constant thickness of the two metallic layers on opposite sides of the dielectric layer.
    Type: Application
    Filed: November 24, 2010
    Publication date: January 24, 2013
    Inventor: Chris D. Geddes
  • Patent number: 8338602
    Abstract: Quaternary nitrogen heterocyclic boronic acid-containing compounds are described, which are sensitive to glucose and fructose, as well as a variety of other physiologically important analytes, such as aqueous chloride and iodide, and a method of using the compounds. Also disclosed is a contact lens doped with the quaternary nitrogen heterocyclic boronic acid-containing compound, and a method of using the doped contact lens to measure the concentration of analyte in tears under physiological conditions.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: December 25, 2012
    Assignee: University of Maryland, Baltimore County
    Inventors: Chris D. Geddes, Ramachandram Badugu, Joseph R. Lakowicz