Patents by Inventor Xiang CHANG

Xiang CHANG 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: 20240088071
    Abstract: Methods for reducing resistivity of metal gapfill include depositing a conformal layer in an opening of a feature and on a field of a substrate with a first thickness of the conformal layer of approximately 10 microns or less, depositing a non-conformal metal layer directly on the conformal layer at a bottom of the opening and directly on the field using an anisotropic deposition process. A second thickness of the non-conformal metal layer on the field and on the bottom of the feature is approximately 30 microns or greater. And depositing a metal gapfill material in the opening of the feature and on the field where the metal gapfill material completely fills the opening without any voids.
    Type: Application
    Filed: September 14, 2022
    Publication date: March 14, 2024
    Inventors: Yi XU, Yu LEI, Zhimin QI, Aixi ZHANG, Xianyuan ZHAO, Wei LEI, Xingyao GAO, Shirish A. PETHE, Tao HUANG, Xiang CHANG, Patrick Po-Chun LI, Geraldine VASQUEZ, Dien-yeh WU, Rongjun WANG
  • Publication number: 20240085582
    Abstract: Cement bonding evaluation and logging in a wellbore environment are described. The cement bonding evaluation is performed using data associated with and processed from the measurement of sonic waves directed to and dissipated by the casing present in the wellbore.
    Type: Application
    Filed: September 13, 2022
    Publication date: March 14, 2024
    Inventors: Ruijia Wang, Yao Ge, Xiang Wu, Chung Chang
  • Patent number: 11927712
    Abstract: Disclosed herein is a method for eccentricity correction. This method may dispose a downhole tool into a borehole. The downhole tool may comprise a measuring assembly that has at least one transducer, determining a beam pattern from the at least one transducer, determining a center of the measurement assembly in the borehole with the beam pattern, calculating a beam pattern factor with at least the beam pattern, calculating an angle factor with at least the beam pattern, calculating an eccentricity factor with at least the beam pattern factor and the angle factor, and creating an eccentricity corrected image with at least the eccentricity factor.
    Type: Grant
    Filed: May 16, 2022
    Date of Patent: March 12, 2024
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Yu Weng, Peng Li, Chung Chang, Richard Coates, Rodney Allen Marlow, Xiang Wu, Yao Ge, Jing Jin
  • Publication number: 20190221063
    Abstract: The invention relates to a mixed photonic lock structure having intelligent identification and a method thereof. It comprises a mixed photonic key inserted into a mixed photonic lock body. A power supply unit of the mixed photonic lock body supplies the required power to the mixed photonic lock body and the mixed photonic key. An infrared (IR)-LED in the mixed photonic lock body emits a corresponding signal to an infrared photo detector (IR-PD) in the mixed photonic key. When the comparison conducted by a signal comparison circuit of the mixed photonic key matches, a RGB-LED emits a light signal password to a RGB PD of the mixed photonic lock body to control the lock to unlock after the comparison conducted by a signal comparison circuit of the mixed photonic lock body matches.
    Type: Application
    Filed: January 12, 2018
    Publication date: July 18, 2019
    Inventors: CHI-TA YANG, YUN-SOW SHIEH, ZIH-RUEI WANG, DING-YUAN WANG, CHIH-TING LIU, JUN-XIANG CHANG, XUAN-ZHI ZHANG, PO-JU LIN, GUO-WEI XU ZENG
  • Patent number: 10354466
    Abstract: The invention relates to a mixed photonic lock structure having intelligent identification and a method thereof. It comprises a mixed photonic key inserted into a mixed photonic lock body. A power supply unit of the mixed photonic lock body supplies the required power to the mixed photonic lock body and the mixed photonic key. An infrared (IR)-LED in the mixed photonic lock body emits a corresponding signal to an infrared photo detector (IR-PD) in the mixed photonic key. When the comparison conducted by a signal comparison circuit of the mixed photonic key matches, a RGB-LED emits a light signal password to a RGB PD of the mixed photonic lock body to control the lock to unlock after the comparison conducted by a signal comparison circuit of the mixed photonic lock body matches.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: July 16, 2019
    Assignees: National Kaohsiung Marine University
    Inventors: Chi-Ta Yang, Yun-Sow Shieh, Zih-Ruei Wang, Ding-Yuan Wang, Chih-Ting Liu, Jun-Xiang Chang, Xuan-Zhi Zhang, Po-Ju Lin, Guo-Wei Xu Zeng