Patents by Inventor David Worthington Hahn

David Worthington Hahn 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).

  • Patent number: 11816622
    Abstract: Personnel evaluation based on crowdsourcing concepts. An approach to personnel evaluation is described that uses crowd-sourced data and an iterative approach. Individual personnel evaluators are themselves evaluated and assigned weighting factors based on their acumen and accuracy with regard to personnel evaluation. Personnel evaluations are provided by each personnel evaluator, who collectively form a crowdsourcing crowd, and weighted according to each evaluator's assigned weighting factor. The crowd-sourced weighted-averages from all evaluators are combined and used periodically and iteratively to evaluate the individual crowdsourcing participants and to re-calculate their individual weighting factors. The approach provides more accurate and more directed personnel evaluations as compared to simple arithmetic averaging of crowd-sourced data, and is improved with each iteration over time.
    Type: Grant
    Filed: August 14, 2017
    Date of Patent: November 14, 2023
    Assignee: ScoutZinc, LLC
    Inventors: David Worthington Hahn, Alexander Jerome Willis
  • Patent number: 11117810
    Abstract: Disclosed herein is a method comprising heating a strontium-containing compound using radiation in a first reactor; decomposing the strontium-containing compound into an oxide and carbon dioxide as a result of heat generated by the exposure to the radiation; reacting the oxide and the carbon dioxide in a second reactor; where the oxide and carbon dioxide react to produce heat; heating a working fluid using the heat produced in the second reactor; and driving a turbine with the heated working fluid to generate energy. Disclosed herein too is a composition comprising strontium carbonate; and strontium zirconate; where the mass ratio of strontium carbonate to strontium zirconate 2:8 to 8:2.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: September 14, 2021
    Assignee: University of Florida Research Foundation, Inc.
    Inventors: James Klausner, Kelvin Fnu Randhir, Nicholas AuYueng, Like Li, Nathan Rhodes, Amey Anand Barde, Renwei Mei, David Worthington Hahn
  • Publication number: 20210106963
    Abstract: Disclosed herein is a solar reactor comprising a reactor member; an aperture for receiving solar radiation, the aperture being disposed in a plane on a wall of the reactor member, where the plane is oriented at any angle other than parallel relative to the centerline of the reactor member; a plurality of absorber tubes, wherein the absorber tubes are oriented such that their respective centerlines are at an angle other than 90° relative to the centerline of the reactor member; and wherein the aperture has a hydraulic diameter that is from 0.2 to 4 times a hydraulic diameter of at least one absorber tube in the plurality of absorber tubes; and a reactive material, the reactive material being disposed in the plurality of absorber tubes.
    Type: Application
    Filed: December 8, 2020
    Publication date: April 15, 2021
    Inventors: James F. Klausner, Joerg Petrasch, Nicholas AuYeung, Ayyoub Mehdizadeh Momen, Rishi Mishra, Jinchao Lu, David Worthington Hahn, Nikhil Sehgal, Renwei Mei, Benjamin Greek, Fotouh A. Al-Raqom, Kyle Allen
  • Patent number: 10906017
    Abstract: Disclosed herein is a solar reactor comprising a reactor member; an aperture for receiving solar radiation, the aperture being disposed in a plane on a wall of the reactor member, where the plane is oriented at any angle other than parallel relative to the centerline of the reactor member; a plurality of absorber tubes, wherein the absorber tubes are oriented such that their respective centerlines are at an angle other than 90° relative to the centerline of the reactor member; and wherein the aperture has a hydraulic diameter that is from 0.2 to 4 times a hydraulic diameter of at least one absorber tube in the plurality of absorber tubes; and a reactive material, the reactive material being disposed in the plurality of absorber tubes.
    Type: Grant
    Filed: July 10, 2017
    Date of Patent: February 2, 2021
    Assignee: University of Florida Research Foundation, Inc.
    Inventors: James F. Klausner, Joerg Petrasch, Nicholas AuYeung, Ayyoub Mehdizadeh Momen, Rishi Mishra, Jinchao Lu, David Worthington Hahn, Nikhil Sehgal, Renwei Mei, Benjamin Greek, Fotouh A. Al-Raqom, Kyle Allen
  • Publication number: 20190263673
    Abstract: Disclosed herein is a method comprising heating a strontium-containing compound using radiation in a first reactor; decomposing the strontium-containing compound into an oxide and carbon dioxide as a result of heat generated by the exposure to the radiation; reacting the oxide and the carbon dioxide in a second reactor; where the oxide and carbon dioxide react to produce heat; heating a working fluid using the heat produced in the second reactor; and driving a turbine with the heated working fluid to generate energy. Disclosed herein too is a composition comprising strontium carbonate; and strontium zirconate; where the mass ratio of strontium carbonate to strontium zirconate 2:8 to 8:2.
    Type: Application
    Filed: March 6, 2019
    Publication date: August 29, 2019
    Inventors: James Klausner, Kelvin Fnu Randhir, Nicholas AuYueng, Like Li, Nathan Rhodes, Amey Anand Barde, Renwei Mei, David Worthington Hahn
  • Patent number: 10266420
    Abstract: Disclosed herein is a method comprising heating a strontium-containing compound using radiation in a first reactor; decomposing the strontium-containing compound into an oxide and carbon dioxide as a result of heat generated by the exposure to the radiation; reacting the oxide and the carbon dioxide in a second reactor; where the oxide and carbon dioxide react to produce heat; heating a working fluid using the heat produced in the second reactor; and driving a turbine with the heated working fluid to generate energy. Disclosed herein too is a composition comprising strontium carbonate; and strontium zirconate; where the mass ratio of strontium carbonate to strontium zirconate 2:8 to 8:2.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: April 23, 2019
    Assignee: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC
    Inventors: James Klausner, Kelvin Fnu Randhir, Nicholas AuYueng, Like Li, Nathan Rhodes, Amey Anand Barde, Renwei Mei, David Worthington Hahn
  • Publication number: 20190050917
    Abstract: Enterprise evaluation based on crowdsourcing concepts. An approach to enterprise evaluation is described that uses crowd-sourced data and an iterative approach. Individual enterprise evaluators are themselves evaluated and assigned weighting factors based on their acumen and accuracy with regard to enterprise evaluation. Enterprise evaluations are provided by each enterprise evaluator, who collectively form a crowdsourcing crowd, and weighted according to each evaluator's assigned weighting factor. The crowd-sourced weighted-averages from all evaluators are combined and used periodically and iteratively to evaluate the individual crowdsourcing participants and to re-calculate their individual weighting factors. The approach provides more accurate and more directed enterprise evaluations as compared to simple arithmetic averaging of crowd-sourced data, and is improved over time with each iteration.
    Type: Application
    Filed: April 11, 2018
    Publication date: February 14, 2019
    Inventors: DAVID WORTHINGTON HAHN, ALEXANDER JEROME WILLIS
  • Publication number: 20190050782
    Abstract: Personnel evaluation based on crowdsourcing concepts. An approach to personnel evaluation is described that uses crowd-sourced data and an iterative approach. Individual personnel evaluators are themselves evaluated and assigned weighting factors based on their acumen and accuracy with regard to personnel evaluation. Personnel evaluations are provided by each personnel evaluator, who collectively form a crowdsourcing crowd, and weighted according to each evaluator's assigned weighting factor. The crowd-sourced weighted-averages from all evaluators are combined and used periodically and iteratively to evaluate the individual crowdsourcing participants and to re-calculate their individual weighting factors. The approach provides more accurate and more directed personnel evaluations as compared to simple arithmetic averaging of crowd-sourced data, and is improved with each iteration over time.
    Type: Application
    Filed: August 14, 2017
    Publication date: February 14, 2019
    Inventors: DAVID WORTHINGTON HAHN, ALEXANDER JEROME WILLIS
  • Patent number: 10072224
    Abstract: Disclosed herein is a solar reactor comprising a reactor member; an aperture for receiving solar radiation, the aperture being disposed in a plane on a wall of the reactor member, where the plane is oriented at any angle other than parallel relative to the centerline of the reactor member; a plurality of absorber tubes, wherein the absorber tubes are oriented such that their respective centerlines are at an angle other than 90° relative to the centerline of the reactor member; and wherein the aperture has a hydraulic diameter that is from 0.2 to 4 times a hydraulic diameter of at least one absorber tube in the plurality of absorber tubes; and a reactive material, the reactive material being disposed in the plurality of absorber tubes.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: September 11, 2018
    Assignee: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC.
    Inventors: James F. Klausner, Joerg Petrasch, Nicholas AuYeung, Ayyoub Mehdizadeh Momen, Rishi Mishra, Jinchao Lu, David Worthington Hahn, Nikhil Sehgal, Renwei Mei, Benjamin Greek
  • Publication number: 20180037466
    Abstract: Disclosed herein is a method comprising heating a strontium-containing compound using radiation in a first reactor; decomposing the strontium-containing compound into an oxide and carbon dioxide as a result of heat generated by the exposure to the radiation; reacting the oxide and the carbon dioxide in a second reactor; where the oxide and carbon dioxide react to produce heat; heating a working fluid using the heat produced in the second reactor; and driving a turbine with the heated working fluid to generate energy. Disclosed herein too is a composition comprising strontium carbonate; and strontium zirconate; where the mass ratio of strontium carbonate to strontium zirconate 2:8 to 8:2.
    Type: Application
    Filed: April 20, 2016
    Publication date: February 8, 2018
    Inventors: James Klausner, Kelvin Fnu Randhir, Nicholas AuYueng, Like Li, Nathan Rhodes, Amey Anand Barde, Renwei Mei, David Worthington Hahn
  • Publication number: 20170304794
    Abstract: Disclosed herein is a solar reactor comprising a reactor member; an aperture for receiving solar radiation, the aperture being disposed in a plane on a wall of the reactor member, where the plane is oriented at any angle other than parallel relative to the centerline of the reactor member; a plurality of absorber tubes, wherein the absorber tubes are oriented such that their respective centerlines are at an angle other than 90° relative to the centerline of the reactor member; and wherein the aperture has a hydraulic diameter that is from 0.2 to 4 times a hydraulic diameter of at least one absorber tube in the plurality of absorber tubes; and a reactive material, the reactive material being disposed in the plurality of absorber tubes.
    Type: Application
    Filed: July 10, 2017
    Publication date: October 26, 2017
    Inventors: James F. Klausner, Joerg Petrasch, Nicholas AuYeung, Ayyoub Mehdizadeh Momen, Rishi Mishra, Jinchao Lu, David Worthington Hahn, Nikhil Sehgal, Renwei Mei, Benjamin Greek, Fotouh A. Al-Raqom, Kyle Allen
  • Publication number: 20160122670
    Abstract: Disclosed herein is a solar reactor comprising a reactor member; an aperture for receiving solar radiation, the aperture being disposed in a plane on a wall of the reactor member, where the plane is oriented at any angle other than parallel relative to the centerline of the reactor member; a plurality of absorber tubes, wherein the absorber tubes are oriented such that their respective centerlines are at an angle other than 90° relative to the centerline of the reactor member; and wherein the aperture has a hydraulic diameter that is from 0.2 to 4 times a hydraulic diameter of at least one absorber tube in the plurality of absorber tubes; and a reactive material, the reactive material being disposed in the plurality of absorber tubes.
    Type: Application
    Filed: June 10, 2014
    Publication date: May 5, 2016
    Inventors: James F. Klausner, Joerg Petrasch, Nicholas AuYeung, Ayyoub Mehdizadeh Momen, Rishi Mishra, Jinchao Lu, David Worthington Hahn, Nikhil Sehgal, Renwei Mei, Benjamin Greek
  • Patent number: 8939966
    Abstract: Methods for imaging or optical sensing of a material are provided. A first fluorescent image or optical signal of a material can be recorded, the material can be perturbed, and then a second fluorescent image or optical signal of the material can be recorded. The two fluorescent images or signals can be subtracted to give a differential image or optical signal.
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: January 27, 2015
    Assignee: University of Florida Research Foundation, Inc.
    Inventor: David Worthington Hahn
  • Patent number: 8319964
    Abstract: A method and apparatus for analyzing a target material is provided. A first laser beam pulse can be incident on a target material to create an ablation event so as to produce an ablation plume of target material. Such ablation events can include plasma ablation, sub-plasma ablation, and thermal desorption. At least a portion of the ablation plume of target material can then be transported a sufficient distance away from the ablation event that a second laser beam pulse can interact with the at least a portion of the ablation plume of target material to create an analytical plasma such that the analytical plasma is uncoupled from the ablation event. The creation of the analytical plasma results in one or more elements of the at least a portion of the ablation plume of target material undergoing atomic emission, which can be collected and analyzed.
    Type: Grant
    Filed: July 12, 2010
    Date of Patent: November 27, 2012
    Assignee: University of Florida Research Foundation, Inc.
    Inventor: David Worthington Hahn
  • Publication number: 20120099103
    Abstract: Embodiments of the invention relate to a method and apparatus for analyzing a target material. Specific embodiments can be referred to as laser ablation laser-induced breakdown spectroscopy (LA-LIBS). Embodiments of the invention relate to the use of a first laser beam pulse incident on a target material to create an ablation event so as to produce an ablation plume of target material. Such ablation events can include, for example, plasma ablation, sub-plasma ablation, and thermal desorption. At least a portion of the ablation plume of target material can then be transported a sufficient distance away from the ablation event that a second laser beam pulse can interact with the at least a portion of the ablation plume of target material to create an analytical plasma such that the analytical plasma is uncoupled from the ablation event.
    Type: Application
    Filed: July 12, 2010
    Publication date: April 26, 2012
    Applicant: University of Florida Research Foundation, Inc.
    Inventor: David Worthington Hahn
  • Publication number: 20110137179
    Abstract: Methods for imaging or optical sensing of a material are provided. A first fluorescent image or optical signal of a material can be recorded, the material can be perturbed, and then a second fluorescent image or optical signal of the material can be recorded. The two fluorescent images or signals can be subtracted to give a differential image or optical signal.
    Type: Application
    Filed: August 21, 2009
    Publication date: June 9, 2011
    Applicant: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC.
    Inventor: David Worthington Hahn
  • Patent number: 7207983
    Abstract: A laser-based refractive surgery system includes a laser source including a laser controller, wherein at least a portion of the incident beam is directed to target eye tissue of a patient. The incident beam portion produces a reflected beam after striking the eye tissue. The system includes at least one detector for detecting the reflected beam. A computer or data processor is communicably coupled to the detector and the laser controller. The computer or data processor generates a cross-correlation function using a plurality of discrete points which digitally represent a waveform representation of the reflected beam and a plurality of reference points. The reference points are preferably associated with a digital representation of the incident beam. The laser controller receives and utilizes the cross-correlation function or parameter derived therefrom, or the ablation rate, and adjusts at least one operating parameter of the laser beam in real-time during a refractive procedure.
    Type: Grant
    Filed: April 29, 2005
    Date of Patent: April 24, 2007
    Assignee: University of Florida Research Foundation, Inc.
    Inventors: David Worthington Hahn, Brian T. Fisher
  • Patent number: 6998980
    Abstract: An automatic animal cage monitoring system includes at least one sensor disposed proximate to a cage for detecting conditions within the cage. The sensor data is transmitted by a wireless transmitter system to at least one remotely located device. The system can simultaneously monitor a plurality of cages. A method for remotely monitoring the conditions associated with an animal within a cage includes the step of obtaining sensor data based on at least one condition within the cage and wirelessly transmitting the sensor data to at least one remote location.
    Type: Grant
    Filed: May 1, 2003
    Date of Patent: February 14, 2006
    Assignee: University of Florida Research Foundation, Inc.
    Inventors: Herbert Arthur Ingley, III, David Worthington Hahn, August Henry Battles
  • Publication number: 20040217858
    Abstract: An automatic animal cage monitoring system includes at least one sensor disposed proximate to a cage for detecting conditions within the cage. The sensor data is transmitted by a wireless transmitter system to at least one remotely located device. The system can simultaneously monitor a plurality of cages. A method for remotely monitoring the conditions associated with an animal within a cage includes the step of obtaining sensor data based on at least one condition within the cage and wirelessly transmitting the sensor data to at least one remote location.
    Type: Application
    Filed: May 1, 2003
    Publication date: November 4, 2004
    Inventors: Herbert Arthur Ingley, David Worthington Hahn, August Henry Battles