Patents by Inventor H. Dennis

H. Dennis 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: 20250066191
    Abstract: System and methods for producing synthesis gas are provided. The system includes a reactor and a steam generation system designed to provide precise control of the rate of steam generation to mix steam with fuel gas to produce humidified fuel gas, which is then fed into a combustion chamber of the reactor. The molar ratio of hydrogen to carbon monoxide in the synthesis gas output from the reactor may be accurately controlled by adjusting the humidity of the fuel gas input into the combustion chamber.
    Type: Application
    Filed: November 8, 2024
    Publication date: February 27, 2025
    Applicant: Board of Regents of the University of Texas System
    Inventors: Brian H. Dennis, Frederick M. MacDonnell
  • Publication number: 20250043952
    Abstract: A flow restrictor for use on burners used for combusting gases includes a central disk and opposing cylindrical members extending from opposing sides of the central disk. The central disk includes a central portion having multiple inner openings extending through the central disk and a peripheral portion having multiple outer openings extending through the central disk. Each of the opposing cylindrical members surrounds the central portion and the inner openings of the central disk. The peripheral portion and the outer openings of the central disk are disposed outside of the cylindrical members. Each of the cylindrical members is designed to be attached to an open end of a pipe of a burner.
    Type: Application
    Filed: October 18, 2024
    Publication date: February 6, 2025
    Inventors: Brian H. Dennis, Frederick M. MacDonnell
  • Patent number: 12172894
    Abstract: System and methods for producing synthesis gas are provided. The system includes a reactor and a steam generation system designed to provide precise control of the rate of steam generation to mix steam with fuel gas to produce humidified fuel gas, which is then fed into a combustion chamber of the reactor. The molar ratio of hydrogen to carbon monoxide in the synthesis gas output from the reactor may be accurately controlled by adjusting the humidity of the fuel gas input into the combustion chamber.
    Type: Grant
    Filed: May 7, 2021
    Date of Patent: December 24, 2024
    Inventors: Brian H. Dennis, Frederick M. MacDonnell
  • Publication number: 20240399354
    Abstract: Two different types of catalysts are disclosed. The first catalyst has a porous support that is impregnated with an active metal catalyst. The support surrounds a metallic core, which functions to increase the bulk heat capacity of the catalyst, thereby damping temperature swings during use. The second catalyst also has a porous support that is impregnated with an active metal catalyst, which is heterogeneously distributed so that the catalyst is concentrated at or near the surface of the support structure. This is accomplished by impregnating the catalyst by pouring a molten metal catalyst over the bulk catalyst supports. This method allows of a small volume of molten catalyst relative to the pore volume of the support and concentrates the catalyst in a band near the surface of the supports.
    Type: Application
    Filed: June 3, 2024
    Publication date: December 5, 2024
    Inventors: Pawarat BOOTPAKDEETAM, Wilaiwan Chanmanee, Brian H. Dennis, Frederick M. Macdonnell
  • Patent number: 12158265
    Abstract: In one embodiment, a burner for use in synthesis gas production includes multiple burner units each configured to deliver fuel and oxygen to a combustion chamber, each burner unit including an inner outlet pipe configured to deliver fuel and an outer outlet pipe configured to deliver oxygen, the outer outlet pipe concentrically surrounding the inner outlet pipe.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: December 3, 2024
    Assignee: Board of Regents of The University of Texas System
    Inventors: Brian H. Dennis, Frederick M. MacDonnell
  • Patent number: 12071345
    Abstract: In some embodiments, a system for producing synthesis gas, the system including a reactor including a burner, a combustion chamber, and a catalyst chamber, and a mixer upstream of the reactor configured to mix fuel with steam to produce humidified fuel that is provided to the burner of the reactor.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: August 27, 2024
    Inventors: Brian H. Dennis, Frederick M. MacDonnell
  • Patent number: 11779963
    Abstract: A sorptive wiper for cleaning is disclosed, the wipe comprising a cleaned and dried sorptive material having fewer than 150 contaminant fibers per square meter that are greater than 100 ?m in length.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: October 10, 2023
    Assignee: Illinois Tool Works Inc.
    Inventors: H. Dennis Blaiss, Laurent H. Sene, Gregory T. Hall, Randy H. Whittington
  • Patent number: 11666893
    Abstract: Described herein are catalysts relating to liquid synthesis, methods of their preparation, and methods of their use. In an embodiment according to the present disclosure, a method of producing a catalyst for liquid synthesis comprises: providing a silica oxide support; pretreating the silica oxide support to remove air and moisture; impregnating the pretreated silica oxide support with cobalt from a cobalt source using a cobalt impregnation method; and calcinating the impregnated silica oxide support in an oven with a temperature ramping profile, wherein the calcinating comprises feeding air into the oven.
    Type: Grant
    Filed: August 3, 2021
    Date of Patent: June 6, 2023
    Inventors: Frederick M. MacDonnell, Brian H. Dennis
  • Publication number: 20220260533
    Abstract: The present invention is a system and method for significantly improving gas chromatography resolution using a dynamic and non-linear thermal gradient along the entire column length and is achieved by decreasing the velocity of analytes when approaching the back end of the capillary column in order to compensate for an increase in velocity of carrier gas as the carrier gas expands when approaching the back end, and wherein the thermal gradient is selected so that the analyte achieves a constant velocity through the capillary column.
    Type: Application
    Filed: February 18, 2022
    Publication date: August 18, 2022
    Inventors: H. Dennis Tolley, Samuel Avila, Brian D. Iverson, Aaron Hawkins, Milton L. Lee
  • Publication number: 20220002154
    Abstract: In some embodiments, a system for producing synthesis gas, the system including a reactor including a burner, a combustion chamber, and a catalyst chamber, and a mixer upstream of the reactor configured to mix fuel with steam to produce humidified fuel that is provided to the burner of the reactor.
    Type: Application
    Filed: October 30, 2019
    Publication date: January 6, 2022
    Applicant: Board of Regents of The University of Texas System
    Inventors: Brian H. Dennis, Frederick M. MacDonnell
  • Publication number: 20210404654
    Abstract: In one embodiment, a burner for use in synthesis gas production includes multiple burner units each configured to deliver fuel and oxygen to a combustion chamber, each burner unit including an inner outlet pipe configured to deliver fuel and an outer outlet pipe configured to deliver oxygen, the outer outlet pipe concentrically surrounding the inner outlet pipe.
    Type: Application
    Filed: October 30, 2019
    Publication date: December 30, 2021
    Applicant: Board of Regents of The University of Texas System
    Inventors: Brian H. Dennis, Frederick M. MacDonnell
  • Patent number: 11143639
    Abstract: A system and method for separating the functions of a liquid chromatography (LC) system into physically separate systems that allow for a more versatile LC system, wherein an LC device provides column 50 a liquid solvent, a sample, and a pump and injector that pushes the sample in the solvent to an output port, and providing an attachable module containing a module input port, a column, a heater for the column, and at least one detector for on-column detection, then attaching the module to the LC device using a press-fit connection that enables the sample in the solvent to be pumped through the column to the at least one detector in order to separate, identify and quantify substances in the sample and transmit results from the at least one detector to the LC system for collection and analysis.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: October 12, 2021
    Assignee: BRIGHAM YOUNG UNIVERSITY
    Inventors: Xiaofeng Xie, Luke T. Tolley, Paul B. Farnsworth, H. Dennis Tolley, Milton L. Lee
  • Patent number: 11110438
    Abstract: Described herein are catalysts relating to liquid synthesis, methods of their preparation, and methods of their use. In an embodiment according to the present disclosure, a method of producing a catalyst for liquid synthesis comprises: providing a silica oxide support; pretreating the silica oxide support to remove air and moisture; impregnating the pretreated silica oxide support with cobalt from a cobalt source using a cobalt impregnation method; and calcinating the impregnated silica oxide support in an oven with a temperature ramping profile, wherein the calcinating comprises feeding air into the oven.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: September 7, 2021
    Inventors: Frederick M. MacDonnell, Brian H. Dennis
  • Patent number: 11026416
    Abstract: A turkey call holder includes an open-top receptacle for receiving a pot call there through such that at least a portion of the pot call resides within the receptacle. Clamping shoes, disposed in opposition to one another within the receptacle, are elastically biased towards one another by at least one elastic member such that the clamping shoes engage opposing sides of a portion of the pot call residing within the receptacle. A flexible strap is coupled to the receptacle for securing the receptacle to a limb of a user.
    Type: Grant
    Filed: March 15, 2021
    Date of Patent: June 8, 2021
    Inventor: H. Dennis Caldwell
  • Patent number: 10920280
    Abstract: A MNase-Sequence Capture method, mTSS-seq, was developed herein to map genome-wide nucleosome distribution in cancer, for example primary human lung and colon adenocarcinoma tissue. Here, it was confirmed that nucleosome redistribution is an early, widespread event in lung adenocarcinoma (LAC) and colon adenocarcinoma (CRC). These altered nucleosome architectures are consistent between LAC and CRC patient samples indicating that they can serve as important early adenocarcinoma markers. As such, this consistency would be expected in other adenocarcinomas, as well as other carcinomas. It was demonstrated that the nucleosome alterations are driven by the underlying DNA sequence and potentiate transcription factor binding. DNA-directed nucleosome redistributions are widespread early in cancer progression, thus providing a methodology for early detection of cancer in grade one patients.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: February 16, 2021
    Assignee: The Florida State University Research Foundation, Inc.
    Inventor: Jonathan H. Dennis
  • Patent number: 10859545
    Abstract: A system for providing standard mixtures of volatile and semi-volatile organic compounds for simultaneous GC and MS calibration in a calibration vial, wherein calibration mixtures are prepared by diluting calibration analytes in granular PDMS such that most of the analytes are in the PDMS phase and the sample can then be taken from the analytes in the headspace vapor in the calibration vial, wherein a reliable calibration sample can be taken from the calibration vial because the analytes in the PDMS phase and the headspace vapor are in thermodynamic equilibrium, and wherein the method provides solvent-less sampling, long-time stability, ease of use, is quantifiable, and related to temperature.
    Type: Grant
    Filed: March 12, 2012
    Date of Patent: December 8, 2020
    Assignee: BRIGHAM YOUNG UNIVERSITY
    Inventors: Milton L. Lee, Xiaofeng Xie, Jacolin A. Murray, Jesse A. Contreras, Tai Van Truong, H. Dennis Tolley
  • Publication number: 20200038846
    Abstract: Described herein are catalysts relating to liquid synthesis, methods of their preparation, and methods of their use. In an embodiment according to the present disclosure, a method of producing a catalyst for liquid synthesis comprises: providing a silica oxide support; pretreating the silica oxide support to remove air and moisture; impregnating the pretreated silica oxide support with cobalt from a cobalt source using a cobalt impregnation method; and calcinating the impregnated silica oxide support in an oven with a temperature ramping profile, wherein the calcinating comprises feeding air into the oven.
    Type: Application
    Filed: July 31, 2019
    Publication date: February 6, 2020
    Inventors: Frederick M. MacDonnell, Brian H. Dennis
  • Publication number: 20190265215
    Abstract: A system and method for separating the functions of a liquid chromatography (LC) system into physically separate systems that allow for a more versatile LC system, wherein an LC device provides column 50 a liquid solvent, a sample, and a pump and injector that pushes the sample in the solvent to an output port, and providing an attachable module containing a module input port, a column, a heater for the column, and at least one detector for on-column detection, then attaching the module to the LC device using a press-fit connection that enables the sample in the solvent to be pumped through the column to the at least one detector in order to separate, identify and quantify substances in the sample and transmit results from the at least one detector to the LC system for collection and analysis.
    Type: Application
    Filed: February 26, 2019
    Publication date: August 29, 2019
    Inventors: Xiaofeng Xie, Luke T. Tolley, Paul B. Farnsworth, H. Dennis Tolley, Milton L. Lee
  • Publication number: 20180335408
    Abstract: A system and method for performing UV LED-based absorption detection for capillary liquid chromatography for detecting and quantifying compounds in a liquid, wherein a simplified system eliminates the need for a beam splitter and a reference cell by using a stable UV source, and power requirements are reduced, resulting in a portable and substantially smaller system with relatively low detection limits.
    Type: Application
    Filed: May 18, 2018
    Publication date: November 22, 2018
    Inventors: Paul B. Farnsworth, Milton L. Lee, Luke T. Tolley, H. Dennis Tolley, Xiaofeng Xie
  • Publication number: 20180250610
    Abstract: A system and method for performing liquid chromatography for separating molecules in a liquid solution, wherein a single column includes two of more separation segments, each separation segment having a separate detector immediately after each separation segment, wherein a mobile phase is inserted into a first separation segment and moves through the column until passing through a last separation segment, and then using the data from the detectors to perform compound identification.
    Type: Application
    Filed: March 5, 2018
    Publication date: September 6, 2018
    Inventors: Xiaofeng Xie, Luke T. Tolley, Paul B. Farnsworth, H. Dennis Tolley, Milton L. Lee