Patents by Inventor Robert Choi

Robert Choi 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: 20250134405
    Abstract: A portable device for quantitative measurement of tissue autoregulation and neurovascular coupling via portable measurement of blood flow, oxygenation, metabolism, and/or EEG signals and methods for using said device. The device may comprise a body and a plurality of legs pivotably attached to the body. The plurality of legs may comprise at least one reference electrode leg and at least one measurement electrode leg for electrical measurement, and an optical detection fiber leg and at least one optical source fiber leg for optical blood flow, oxygenation, and metabolism measurement. The present invention is additionally directed to a portable device for blood flow measurement and therapeutic photobiomodulation. The device may comprise a body and a plurality of legs. The plurality of legs may comprise at least one optical detection fiber leg and at least one optical source fiber leg, and at least one leg for therapeutic photobiomodulation.
    Type: Application
    Filed: January 6, 2025
    Publication date: May 1, 2025
    Inventors: Yama Akbari, Robert H. Wilson, Christian Crouzet, Thomas Milner, Bernard Choi
  • Patent number: 12254051
    Abstract: A method for a crawl algorithm includes obtaining a plurality of web pages for a web crawler to crawl. The method also includes determining an available bandwidth for the web crawler. The method includes, for each respective web page of the plurality of web pages, determining a respective crawl value for the respective web page based on the available bandwidth and determining that the respective crawl value of the respective web page satisfies a threshold value. The method includes, in response to determining that the respective crawl value of the respective web page satisfies the threshold value, updating the respective web page in a cache memory.
    Type: Grant
    Filed: September 25, 2023
    Date of Patent: March 18, 2025
    Assignee: Google LLC
    Inventors: Linhai Qiu, Robert Istvan Busa-Fekete, Julian Ulf Zimmert, Andras Gyorgy, Hao Shen, Hyomin Choi, Sharmila Vijay, Li Xiao
  • Publication number: 20250084018
    Abstract: A first stream containing 1,3-butadiene, C4 acetylenes, and optionally C3 hydrocarbons, is mixed with a portion of the liquid recycle stream from a C4 acetylene hydrogenation reactor containing hydrogenated C4 acetylenes and a molecular hydrogen-containing stream, the resulting mixed stream is then fed to a C4 acetylene hydrogenation reactor to selectively hydrogenate the C4 acetylenes in the crude butadiene stream without appreciable 1,3-butadiene conversion.
    Type: Application
    Filed: November 25, 2024
    Publication date: March 13, 2025
    Applicant: KELLOGG BROWN & ROOT LLC
    Inventors: David Sellinger, Robert Choi, Quo-Chen Yeh, Alok Srivastava, Kristine E. Hamilton, Michael A. Radzicki
  • Patent number: 12245115
    Abstract: In exemplary embodiments, methods and systems are provided for downloading of geographic information. In accordance with an exemplary embodiment, a method is provided that includes the following steps: identifying, via a processor using map data, a plurality of geographic areas in which a vehicle is to travel along a selected route to a destination; identifying, via the processor using the map data, a plurality of map tiles corresponding to the plurality of geographic areas, such that each of the plurality of map tiles corresponds to a different one of the plurality of geographic areas; obtaining data access information for each of the plurality of geographic areas; and determining, via the processor, a prioritized sequence for downloading the plurality of map tiles, based on the data access information for the plurality of geographic areas.
    Type: Grant
    Filed: June 8, 2022
    Date of Patent: March 4, 2025
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Gabriel Tayoung Choi, Anthony W Cullen, Morgan Douglas Dykshorn, Nolan Foster, Matthew Robert Wallace
  • Patent number: 12243819
    Abstract: Integrated chips include first lines, formed on an underlying substrate. Spacers are formed conformally on sidewalls of the plurality of lines. Etch stop remnants are positioned on the sidewalls of the plurality of lines, between the spacers and the underlying substrate. Second lines are formed on the underlying substrate, between respective pairs of adjacent first lines.
    Type: Grant
    Filed: July 26, 2022
    Date of Patent: March 4, 2025
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Brent Alan Anderson, Lawrence A. Clevenger, Christopher J. Penny, Kisik Choi, Nicholas Anthony Lanzillo, Robert Robison
  • Publication number: 20250041860
    Abstract: Microfluidic chips and cartridges and systems that include such chips are disclosed. In some embodiments, the chips include a microfluidic channel disposed in a substrate with the channel comprising at least one expansion region. The channel is configured to generate a vortex within the at least one expansion region in response to fluid through the microfluidic channel to trap cells or particles. The substrate in which the channel is formed may be relatively rigid to resist deformation.
    Type: Application
    Filed: September 30, 2024
    Publication date: February 6, 2025
    Inventors: Elodie Sollier, Michael Lee Kochersperger, Robert F. Englert, James Che, Kuo-Wei Huang, Michael Boyce-Jacino, Anatasia Neddersen, Anna Passernig, Bruce Richardson, Insang Choi
  • Patent number: 12213770
    Abstract: A portable device for quantitative measurement of tissue autoregulation and neurovascular coupling via portable measurement of blood flow, oxygenation, metabolism, and/or EEG signals and methods for using said device. The device may comprise a body and a plurality of legs pivotably attached to the body. The plurality of legs may comprise at least one reference electrode leg and at least one measurement electrode leg for electrical measurement, and an optical detection fiber leg and at least one optical source fiber leg for optical blood flow, oxygenation, and metabolism measurement. The present invention is additionally directed to a portable device for blood flow measurement and therapeutic photobiomodulation. The device may comprise a body and a plurality of legs. The plurality of legs may comprise at least one optical detection fiber leg and at least one optical source fiber leg, and at least one leg for therapeutic photobiomodulation.
    Type: Grant
    Filed: July 15, 2021
    Date of Patent: February 4, 2025
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Yama Akbari, Robert H. Wilson, Christian Crouzet, Thomas Milner, Bernard Choi
  • Publication number: 20250040231
    Abstract: Gallium nitride (GaN) three-dimensional integrated circuit technology is described. In an example, an integrated circuit structure includes a layer including gallium and nitrogen, a plurality of gate structures over the layer including gallium and nitrogen, a source region on a first side of the plurality of gate structures, a drain region on a second side of the plurality of gate structures, the second side opposite the first side, and a drain field plate above the drain region wherein the drain field plate is coupled to the source region. In another example, a semiconductor package includes a package substrate. A first integrated circuit (IC) die is coupled to the package substrate. The first IC die includes a GaN device layer and a Si-based CMOS layer.
    Type: Application
    Filed: October 14, 2024
    Publication date: January 30, 2025
    Inventors: Han Wui THEN, Marko RADOSAVLJEVIC, Pratik KOIRALA, Nicole K. THOMAS, Paul B. FISCHER, Adel A. ELSHERBINI, Tushar TALUKDAR, Johanna M. SWAN, Wilfred GOMES, Robert S. CHAU, Beomseok CHOI
  • Publication number: 20250019780
    Abstract: The present invention is directed to a method of determining DNA concentration in a DNA virus. The invention features three basic steps. The initial step is the specific capture of a defined amount of virus capsid particles on a first solid phase. The second step is lysis of the capsid to release the virus DNA from the first solid phase into a lysis solution. After separating the lysis solution from the first solid phase, the third step is contacting the lysis solution with a second solid phase. The second solid phase captures total DNA derived from the captured capsid. The present invention is also directed to a method for measuring the percentage of full virus capsid, comprising first determining the ssDNA concentration in viruses, and then converting the ssDNA concentration to percentage of full virus capsid using a calibration curve having DNA concentration plotted against standards of % of full capsids.
    Type: Application
    Filed: September 27, 2024
    Publication date: January 16, 2025
    Inventors: Robert F. Zuk, Samuel Yang, Alex Ho Fai Lee, Indrani Chakraborty, Pu Li, Wai Choi
  • Patent number: 12180154
    Abstract: A first stream containing 1,3-butadiene, C4 acetylenes, and optionally C3 hydrocarbons, is mixed with a portion of the liquid recycle stream from a C4 acetylene hydrogenation reactor containing hydrogenated C4 acetylenes and a molecular hydrogen-containing stream, the resulting mixed stream is then fed to a C4 acetylene hydrogenation reactor to selectively hydrogenate the C4 acetylenes in the crude butadiene stream without appreciable 1,3-butadiene conversion.
    Type: Grant
    Filed: April 26, 2022
    Date of Patent: December 31, 2024
    Assignee: Kellogg Brown & Root LLC
    Inventors: David Sellinger, Robert Choi, Quo-Chen Yeh, Alok Srivastava, Kristine E. Hamilton, Michael A. Radzicki
  • Patent number: 12168638
    Abstract: A system and a process for dimerizing cyclopentadiene (CPD) including producing a C6+C7 rich bottoms stream and a C5 rich side draw from a debutanizer, where the C5 rich side draw and at least a portion of the C6+C7 rich bottoms stream are directed to a dimerizer where the CPD is thermally dimerized to dicyclopentadiene (DCPD). DCPD is more stable than CPD and thus safer to handle.
    Type: Grant
    Filed: December 19, 2023
    Date of Patent: December 17, 2024
    Assignee: KELLOGG BROWN & ROOT LLC
    Inventors: David Sellinger, Robert Choi, Quo-Chen Yeh, Alok Srivastava, Kristine E. Hamilton, Michael A. Radzicki
  • Publication number: 20240318089
    Abstract: A system for hydrogenation C3 and C4 acetylenes contained within a hydrocarbon stream generated in a stream cracker unit where a debutanizer is placed upstream of a depropanizer for more economical processing of the hydrocarbon stream to produce lighter hydrocarbons, where the system requires only one stripper tower downstream of hydrogenation to remove residual hydrogen.
    Type: Application
    Filed: June 6, 2024
    Publication date: September 26, 2024
    Applicant: KELLOGG BROWN & ROOT LLC
    Inventors: David Sellinger, Robert Choi, Quo-Chen Yeh, Alok Srivastava, Kristine E. Hamilton, Michael A. Radzicki
  • Patent number: 12037553
    Abstract: A system for hydrogenation C3 and C4 acetylenes contained within a hydrocarbon stream generated in a stream cracker unit where a debutanizer is placed upstream of a depropanizer for more economical processing of the hydrocarbon stream to produce lighter hydrocarbons, where the system requires only one stripper tower downstream of hydrogenation to remove residual hydrogen.
    Type: Grant
    Filed: April 26, 2022
    Date of Patent: July 16, 2024
    Assignee: Kellogg Brown & Root LLC
    Inventors: David Sellinger, Robert Choi, Quo-Chen Yeh, Alok Srivastava, Kristine E. Hamilton, Michael A. Radzicki
  • Publication number: 20240116837
    Abstract: A system and a process for dimerizing cyclopentadiene (CPD) including producing a C6+C7 rich bottoms stream and a C5 rich side draw from a debutanizer, where the C5 rich side draw and at least a portion of the C6+C7 rich bottoms stream are directed to a dimerizer where the CPD is thermally dimerized to dicyclopentadiene (DCPD). DCPD is more stable than CPD and thus safer to handle.
    Type: Application
    Filed: December 19, 2023
    Publication date: April 11, 2024
    Applicant: KELLOGG BROWN & ROOT LLC
    Inventors: David Sellinger, Robert Choi, Quo-Chen Yeh, Alok Srivastava, Kristine E. Hamilton, Michael A. Radzicki
  • Publication number: 20240059462
    Abstract: Drink bottles, or drink containers with cap assemblies that include a drink spout. The drink spout is pivotally coupled to a base of the cap assembly and includes a mouthpiece. In some embodiments, the cap assembly includes a dust cover configured to at least partially cover the mouthpiece when the mouthpiece and pivotal mount are in the stowed position. In some embodiments, the cap assembly includes a dispensing guard configured to at least partially cover the dispensing outlet when the mouthpiece and pivotal mount are in the stowed position. In some embodiments, the cap assembly includes a handle, which may include at least one guard for the drink spout and/or mouthpiece.
    Type: Application
    Filed: November 2, 2023
    Publication date: February 22, 2024
    Inventors: Robert CHOI, Barley A. FORSMAN, Jeremy GALTEN
  • Patent number: 11884608
    Abstract: A system and a process for dimerizing cyclopentadiene (CPD) including producing a C6+C7 rich bottoms stream and a C5 rich side draw from a debutanizer, where the C5 rich side draw and at least a portion of the C6+C7 rich bottoms stream are directed to a dimerizer where the CPD is thermally dimerized to dicyclopentadiene (DCPD). DCPD is more stable than CPD and thus safer to handle.
    Type: Grant
    Filed: April 26, 2022
    Date of Patent: January 30, 2024
    Assignee: KELLOGG BROWN & ROOT LLC
    Inventors: David Sellinger, Robert Choi, Quo-Chen Yeh, Alok Srivastava, Kristine E. Hamilton, Michael A. Radzicki
  • Patent number: 11851250
    Abstract: Drink bottles, or drink containers with cap assemblies that include a drink spout. The drink spout is pivotally coupled to a base of the cap assembly and includes a mouthpiece. In some embodiments, the cap assembly includes a dust cover configured to at least partially cover the mouthpiece when the mouthpiece and pivotal mount are in the stowed position. In some embodiments, the cap assembly includes a dispensing guard configured to at least partially cover the dispensing outlet when the mouthpiece and pivotal mount are in the stowed position. In some embodiments, the cap assembly includes a handle, which may include at least one guard for the drink spout and/or mouthpiece.
    Type: Grant
    Filed: December 29, 2021
    Date of Patent: December 26, 2023
    Assignee: CAMELBAK PRODUCTS, LLC
    Inventors: Robert Choi, Barley A. Forsman, Jeremy Galten
  • Publication number: 20220340504
    Abstract: A first stream containing 1,3-butadiene, C4 acetylenes, and optionally C3 hydrocarbons, is mixed with a portion of the liquid recycle stream from a C4 acetylene hydrogenation reactor containing hydrogenated C4 acetylenes and a molecular hydrogen-containing stream, the resulting mixed stream is then fed to a C4 acetylene hydrogenation reactor to selectively hydrogenate the C4 acetylenes in the crude butadiene stream without appreciable 1,3-butadiene conversion.
    Type: Application
    Filed: April 26, 2022
    Publication date: October 27, 2022
    Applicant: KELLOGG BROWN & ROOT LLC
    Inventors: David Sellinger, Robert Choi, Quo-Chen Yeh, Alok Srivastava, Kristine E. Hamilton, Michael A. Radzicki
  • Publication number: 20220340501
    Abstract: A system and a process for dimerizing cyclopentadiene (CPD) including producing a C6+C7 rich bottoms stream and a C5 rich side draw from a debutanizer, where the C5 rich side draw and at least a portion of the C6+C7 rich bottoms stream are directed to a dimerizer where the CPD is thermally dimerized to dicyclopentadiene (DCPD). DCPD is more stable than CPD and thus safer to handle.
    Type: Application
    Filed: April 26, 2022
    Publication date: October 27, 2022
    Applicant: KELLOGG BROWN & ROOT LLC
    Inventors: David Sellinger, Robert Choi, Quo-Chen Yeh, Alok Srivastava, Kristine E. Hamilton, Michael A. Radzicki
  • Publication number: 20220340826
    Abstract: A system for hydrogenation C3 and C4 acetylenes contained within a hydrocarbon stream generated in a stream cracker unit where a debutanizer is placed upstream of a depropanizer for more economical processing of the hydrocarbon stream to produce lighter hydrocarbons, where the system requires only one stripper tower downstream of hydrogenation to remove residual hydrogen.
    Type: Application
    Filed: April 26, 2022
    Publication date: October 27, 2022
    Applicant: KELLOGG BROWN & ROOT LLC
    Inventors: David Sellinger, Robert Choi, Quo-Chen Yeh, Alok Srivastava, Kristine E. Hamilton, Michael A. Radzicki