Patents by Inventor ZhiPing Xiong

ZhiPing Xiong 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).

  • CARBIDE-FREE TEMPERED MARTENSITIC STEELS AND PREPARATION METHODS THEREOF
    Publication number: 20250043377
    Abstract: The embodiments of the present disclosure provide a carbide-free tempered martensitic steel and a preparation method thereof. The carbide-free tempered martensitic steel includes a martensite matrix without carbide and a retained austenite distributed between the martensite matrix obtained after tempering or partitioning. A size of retained austenite is submicron or nanoscale, a morphology of retained austenite includes at least one of sphere, block, or film, and a volume fraction of the retained austenite is in a range of 10%-40%.
    Type: Application
    Filed: December 29, 2023
    Publication date: February 6, 2025
    Applicant: BEIJING INSTITUTE OF TECHNOLOGY
    Inventors: Zhiping XIONG, Dezhen YANG, Chao ZHANG, Hao ZHANG, Xingwang CHENG
  • Carbide-free tempered martensitic steels and preparation methods thereof
    Patent number: 12215404
    Abstract: The embodiments of the present disclosure provide a carbide-free tempered martensitic steel and a preparation method thereof. The carbide-free tempered martensitic steel includes a martensite matrix without carbide and a retained austenite distributed between the martensite matrix obtained after tempering or partitioning. A size of retained austenite is submicron or nanoscale, a morphology of retained austenite includes at least one of sphere, block, or film, and a volume fraction of the retained austenite is in a range of 10%-40%.
    Type: Grant
    Filed: December 29, 2023
    Date of Patent: February 4, 2025
    Assignee: BEIJING INSTITUTE OF TECHNOLOGY
    Inventors: Zhiping Xiong, Dezhen Yang, Chao Zhang, Hao Zhang, Xingwang Cheng
  • Character data compression for reducing storage requirements in a database system
    Patent number: 9129001
    Abstract: A system, method, and computer program product for character data compression for reducing data storage requirements in a database system are described. Embodiments include identifying data of a particular character type in a full data page, and identifying usage frequency of each character of the particular character type. Each character is encoded based on the identified usage frequency and stored, with storage requirements for most frequently used characters are reduced.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: September 8, 2015
    Assignee: Sybase, Inc.
    Inventors: Xu-dong Qian, ZhiPing Xiong
  • Character Data Compression for Reducing Storage Requirements in a Database System
    Publication number: 20130297573
    Abstract: A system, method, and computer program product for character data compression for reducing data storage requirements in a database system are described. Embodiments include identifying data of a particular character type in a full data page, and identifying usage frequency of each character of the particular character type. Each character is encoded based on the identified usage frequency and stored, with storage requirements for most frequently used characters are reduced.
    Type: Application
    Filed: May 7, 2012
    Publication date: November 7, 2013
    Applicant: Sybase Inc.
    Inventors: Xu-dong QIAN, ZhiPing Xiong