Patents by Inventor Yuanheng ZHANG

Yuanheng ZHANG 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: 20250015040
    Abstract: An annular structure for an electronic flame off (EFO) wand of a wire bonder is positioned beneath a capillary of the wire bonder. The annular structure provides uniform heat to a bond wire extending from the capillary to form a free air ball (FAB). Because heat is uniformly applied to the bond wire, the FAB is uniformly formed and is centered with respect to the capillary. The FAB is then bonded to a bond pad of a substrate. Because the FAB was uniformly formed and is centered on the capillary, the FAB will also be centered on the bond pad.
    Type: Application
    Filed: July 7, 2023
    Publication date: January 9, 2025
    Inventors: Jingyun Chen, Lian Chen, Guangqiang Li, Pengchen Ai, Yuanheng Zhang, Huijie Zhu, Wenbin Qu, Yonglong Liu, Xiaoting Guo, Guiyang Jiang
  • Patent number: 12114435
    Abstract: A method of soldering one or more components to a substrate includes providing a substrate and applying an amount of solder material to the top planar surface of the substrate. One or more electrical components are mounted to the solder material in a predetermined position and orientation. A carrier is provided having one or more magnets embedded therein. The substrate is positioned above the carrier such that each of the one or more magnets is positioned directly below a corresponding electrical component. A carrier cover is positioned above the substrate and the electrical components. The solder material is heated to a predetermined temperature for a predetermined amount of time during which each of the magnets exerts a magnetic force on a corresponding electrical component to maintain its orientation relative to the substrate. The magnets reduce the occurrence of tombstoning of the electrical components during heating of the solder material.
    Type: Grant
    Filed: May 13, 2022
    Date of Patent: October 8, 2024
    Assignee: SANDISK TECHNOLOGIES, INC.
    Inventors: Virgil Zhu, Vincent Jiang, Paul Qu, Shixing Zhu, Yuanheng Zhang, Enoch He, Yonglong Liu, Lian Chen, Guangqiang Li, Jingyun Chen
  • Publication number: 20230371185
    Abstract: A method of soldering one or more components to a substrate includes providing a substrate and applying an amount of solder material to the top planar surface of the substrate. One or more electrical components are mounted to the solder material in a predetermined position and orientation. A carrier is provided having one or more magnets embedded therein. The substrate is positioned above the carrier such that each of the one or more magnets is positioned directly below a corresponding electrical component. A carrier cover is positioned above the substrate and the electrical components. The solder material is heated to a predetermined temperature for a predetermined amount of time during which each of the magnets exerts a magnetic force on a corresponding electrical component to maintain its orientation relative to the substrate. The magnets reduce the occurrence of tombstoning of the electrical components during heating of the solder material.
    Type: Application
    Filed: May 13, 2022
    Publication date: November 16, 2023
    Applicant: Western Digital Technologies, Inc.
    Inventors: Virgil Zhu, Vincent Jiang, Paul Qu, Shixing Zhu, Yuanheng Zhang, Enoch He, Yonglong Liu, Lian Chen, Guangqiang Li, Jingyun Chen
  • Publication number: 20110073344
    Abstract: A composition for forming a gasket comprises a curable elastomer material and 0.1-20 weight % (e.g., 4-10 weight %) carbon nanotubes dispersed throughout the elastomer material. A dispensed bead of elastomer material exhibits a Slump ratio of at least 0.7. The composition provides the correct balance of rheology/dispensing characteristics, seal characteristics, and contamination profile characteristics required in form-in-place gasket applications, while simultaneously providing a conductive form-in-place gasket.
    Type: Application
    Filed: September 29, 2010
    Publication date: March 31, 2011
    Applicant: HYPERION CATALYSIS INTERNATIONAL, INC.
    Inventors: Yuanheng ZHANG, Mark HYMAN, Robert Bernard ANDERSON, III, Dylan LAM