Patents by Inventor Harold Chen

Harold Chen 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: 11987591
    Abstract: Provided are salts of (S)-(4,5-dihydro-7H-thieno[2,3-c]pyran-7-yl)-N-methylmethanamine and various of crystal forms thereof, and compositions, medicaments, pharmaceutically acceptable formulations thereof, and methods of making same. In addition, provided are compounds comprising specific particle size distributions of crystalline (S)-(4,5-dihydro-7H-thieno[2,3-c]pyran-7-yl)-N-methylmethanamine HCl and methods of making and modulating the particle size distributions.
    Type: Grant
    Filed: July 22, 2022
    Date of Patent: May 21, 2024
    Assignee: Sumitomo Pharma America, Inc.
    Inventors: Andrea Bauer, Nandkumar Nivritti Bhogle, Xiaoxia Chen, Shahla Jamzad, Robert Joseph Prytko, Kostas Saranteas, Michael Joseph Sizensky, Harold Scott Wilkinson, Haitao Zhang
  • Patent number: 11933932
    Abstract: This invention is useful for determining the permeability of a geological formation using 1H NMR diffusion measurements acquired in the laboratory and using downhole 1H NMR well logging. The current technology for obtaining formation permeability downhole using NMR is not adequate for low-permeability, unconventional source rock formations with high organic content. This new method uses laboratory 1H NMR diffusion measurements for creating continuous downhole well logs of the mobile-hydrocarbon permeability of the hydrocarbon-filled pore space of downhole geological formations.
    Type: Grant
    Filed: April 6, 2021
    Date of Patent: March 19, 2024
    Assignee: VINEGAR TECHNOLOGIES LLC
    Inventors: Harold J. Vinegar, Philip M. Singer, George J. Hirasaki, Zeliang Chen, Xinglin Wang, Eva Vinegar
  • Patent number: 11921069
    Abstract: The following invention is used for determining the relative permeability of a fluid in a rock for three different phases: water, oil, and gas, in both conventional and unconventional formations. The permeability of a phase describes how much it can flow in porous media given a pressure gradient and is useful in evaluating reservoir quality and productivity. The following invention is a method to determine the three-phase relative permeabilities in both conventional and unconventional formations using NMR restricted diffusion measurements on core with NMR-active nuclei, combined with centrifugation of the core. In addition, the tortuosity, pore size (surface-to-volume ratio), fluid-filled porosity, and permeability is determined for each of the three phases in a rock.
    Type: Grant
    Filed: April 6, 2021
    Date of Patent: March 5, 2024
    Assignee: Vinegar Technologies LLC
    Inventors: Eva Vinegar, Philip M. Singer, George J. Hirasaki, Zeliang Chen, Xinglin Wang, Harold J. Vinegar
  • Patent number: 5256867
    Abstract: A reader assembly for reading a data carrier having at least one data track located at a prearranged data track position thereon. The reader assembly includes a transducer means having at least one data pickup element on a front face thereof. A guide means defines a guide slot having first and second side wall members and a bottom wall member adapted to guide a data carrier through the reader assembly, the first side wall member having an access window formed therein for permitting communication between the transducer means and the data carrier. A frame means carries the transducer means in a prearranged location thereon.
    Type: Grant
    Filed: December 30, 1991
    Date of Patent: October 26, 1993
    Assignee: Verifone, Inc.
    Inventor: Harold Chen
  • Patent number: 5180905
    Abstract: A point of sale terminal having a reader assembly for reading a data carrier having data stored on at least one data track thereon. The terminal includes a housing defining a guide slot location for the data carrier and a transducer for detecting data stored on the data track. A removable guide element is mounted to the housing at the data carrier slot location. This guide element has a read head bracket which is snap mounted thereto. A registration arrangement permits mounting of the read head bracket in two registered positions for determining which of multiple data tracks will be read by the transducer.
    Type: Grant
    Filed: December 30, 1991
    Date of Patent: January 19, 1993
    Assignee: VeriFone Inc.
    Inventors: Harold Chen, Noah L. Anglin, Stanley J. Hludzinski
  • Patent number: D334924
    Type: Grant
    Filed: June 1, 1990
    Date of Patent: April 20, 1993
    Assignee: Verifone, Inc.
    Inventors: David Crawford, James Arakaki, Harold Chen