Patents by Inventor Steven Gahlings

Steven Gahlings 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: 11221431
    Abstract: A sensor for monitoring CO2 in a fluid regardless of the phase properties of the fluid, i.e., regardless of whether the fluid contacting the window is a liquid water-based phase, a liquid oil-based phase, a mixture of liquid water and liquid oil-based phases, or a gas phase. The sensor includes an internal reflection window for contacting with the fluid. A mid-infrared light source directs a beam of mid-infrared radiation into the window and the beam is internal reflected at an interface between the window and the fluid. The reflected beam is passed through three narrow bandpass filters which preferentially transmit mid-infrared radiation over bands of wavelengths corresponding to absorbance peaks of water, oil and CO2. The amount of CO2 is determined from the intensities of the mid-infrared radiation passing through the three filters.
    Type: Grant
    Filed: January 12, 2021
    Date of Patent: January 11, 2022
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Go Fujisawa, Sheng Chao, Timothy Jones, Nathan Lawrence, Rolf Rustad, Li Jiang, Steven Gahlings
  • Publication number: 20210165123
    Abstract: A sensor for monitoring CO2 in a fluid regardless of the phase properties of the fluid, i.e., regardless of whether the fluid contacting the window is a liquid water-based phase, a liquid oil-based phase, a mixture of liquid water and liquid oil-based phases, or a gas phase. The sensor includes an internal reflection window for contacting with the fluid. A mid-infrared light source directs a beam of mid-infrared radiation into the window and the beam is internal reflected at an interface between the window and the fluid. The reflected beam is passed through three narrow bandpass filters which preferentially transmit mid-infrared radiation over bands of wavelengths corresponding to absorbance peaks of water, oil and CO2. The amount of CO2 is determined from the intensities of the mid-infrared radiation passing through the three filters.
    Type: Application
    Filed: January 12, 2021
    Publication date: June 3, 2021
    Inventors: Go Fujisawa, Sheng Chao, Timothy Jones, Nathan Lawrence, Rolf Rustad, Li Jiang, Steven Gahlings
  • Patent number: 10944109
    Abstract: A Li/CFx primary battery having a lithium-based anode and a fluorinated carbon cathode. The fluorinated carbon cathode includes fluorinated carbon nanoparticles. The structure and size distribution of the carbon precursor carbon nanotubes are configured to provide improved battery performance. The fluorinated carbon nanoparticles can be formed by fluorinating carbon nanoparticles using a fluorine-based reactive gas at a temperature in the range from 300 to 600° C., and the fluorinated carbon nanoparticles can further be used to form the cathode of the primary battery. Producing the Li/CFx primary batter can also include heating the fluorinated carbon nanoparticles under an inert atmosphere before the fluorinated carbon nanoparticles are used to form the cathode of the primary battery.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: March 9, 2021
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Hanpu Liang, Nathan Lawrence, Timothy Jones, Steven Gahlings, Christine Jarvis, Wen Rong Li, Rogerio Tadeu Ramos, Vladimir Hernandez Solis
  • Patent number: 10921482
    Abstract: A sensor for monitoring CO2 in a fluid regardless of the phase properties of the fluid, i.e., regardless of whether the fluid contacting the window is a liquid water-based phase, a liquid oil-based phase, a mixture of liquid water and liquid oil-based phases, or a gas phase. The sensor includes an internal reflection window for contacting with the fluid. A mid-infrared light source directs a beam of mid-infrared radiation into the window and the beam is internal reflected at an interface between the window and the fluid. The reflected beam is passed through three narrow bandpass filters which preferentially transmit mid-infrared radiation over bands of wavelengths corresponding to absorbance peaks of water, oil and CO2.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: February 16, 2021
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Go Fujisawa, Sheng Chao, Timothy Jones, Nathan Lawrence, Rolf Rustad, Li Jiang, Steven Gahlings
  • Patent number: 10539500
    Abstract: An integrated approach for cleaning an active surface of a petrochemical sensor. Sensors in the petrochemical industry are often deployed in locations where they are prone to fouling. By heating the active surface fouling substances may be removed from the active surface. Heating the surface above a supercritical point of a fluid being sensed may create a fluid that may serve to clean the active surface. Limiting the duration of the applied heating and/or pulsing the heating may mitigate adverse effects of use of high temperatures. A doped active surface, such as a doped diamond window may be designed to have conductive areas in the window that may be used for resistive heating of the window.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: January 21, 2020
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Timothy Jones, Nathan Lawrence, Go Fujisawa, Sheng Chao, Steven Gahlings
  • Patent number: 10409300
    Abstract: A method for changing a set point of a system where period of a dominant resonance of the system is determined, a change profile for the set point change is processed; a time period for the set point change based on the period of the dominant resonance in order to minimize excitation of the dominant resonance is also processed; and the set point change is actioned according to the processed change profile and the time period.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: September 10, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Benjamin Peter Jeffryes, John Cook, Steven Gahlings
  • Publication number: 20190267626
    Abstract: A Li/CFx primary battery having a lithium-based anode and a fluorinated carbon cathode. The fluorinated carbon cathode includes fluorinated carbon nanoparticles. The structure and size distribution of the carbon precursor carbon nanotubes are configured to provide improved battery performance. The fluorinated carbon nanoparticles can be formed by fluorinating carbon nanoparticles using a fluorine-based reactive gas at a temperature in the range from 300 to 600° C., and the fluorinated carbon nanoparticles can further be used to form the cathode of the primary battery. Producing the Li/CFx primary batter can also include heating the fluorinated carbon nanoparticles under an inert atmosphere before the fluorinated carbon nanoparticles are used to form the cathode of the primary battery.
    Type: Application
    Filed: May 10, 2019
    Publication date: August 29, 2019
    Inventors: Hanpu Liang, Nathan Lawrence, Timothy Jones, Steven Gahlings, Christine Jarvis, Wen Rong Li, Rogerio Tadeu Ramos, Vladimir Hernandez Solis
  • Publication number: 20170242149
    Abstract: A sensor for monitoring CO2 in a fluid regardless of the phase properties of the fluid, i.e., regardless of whether the fluid contacting the window is a liquid water-based phase, a liquid oil-based phase, a mixture of liquid water and liquid oil-based phases, or a gas phase. The sensor includes an internal reflection window for contacting with the fluid. A mid-infrared light source directs a beam of mid-infrared radiation into the window and the beam is internal reflected at an interface between the window and the fluid. The reflected beam is passed through three narrow bandpass filters which preferentially transmit mid-infrared radiation over bands of wavelengths corresponding to absorbance peaks of water, oil and CO2.
    Type: Application
    Filed: September 9, 2015
    Publication date: August 24, 2017
    Inventors: Go Fujisawa, Sheng Chao, Timothy Jones, Nathan Lawrence, Rolf Rustad, Li Jiang, Steven Gahlings
  • Publication number: 20160133932
    Abstract: A Li/CFx primary battery having a lithium-based anode and a fluorinated carbon cathode. The fluorinated carbon cathode includes fluorinated carbon nanoparticles. The structure and size distribution of the carbon precursor carbon nanotubes are configured to provide improved battery performance.
    Type: Application
    Filed: November 6, 2015
    Publication date: May 12, 2016
    Inventors: Hanpu Liang, Nathan Lawrence, Timothy Jones, Steven Gahlings, Christine Jarvis, Wen Rong Li, Rogerio Tadeu Ramos, Vladimir Hernandez Solis
  • Patent number: D995388
    Type: Grant
    Filed: October 5, 2022
    Date of Patent: August 15, 2023
    Inventors: Steven Gahlings, Andrew Crawford
  • Patent number: D1010420
    Type: Grant
    Filed: October 5, 2022
    Date of Patent: January 9, 2024
    Assignee: Caterpillar SARL
    Inventors: Steven Gahlings, Andrew Crawford