Patents by Inventor Donghua Xu

Donghua Xu 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).

  • Cu-based bulk metallic glasses in the Cu—Zr—Hf—Al and related systems
    Patent number: 11821064
    Abstract: Cu-based bulk amorphous alloys in the quaternary Cu—Zr—Hf—Al alloy system are disclosed. A method of casting such alloys and articles comprising such alloys also are disclosed.
    Type: Grant
    Filed: October 22, 2021
    Date of Patent: November 21, 2023
    Assignee: Oregon State University
    Inventors: Donghua Xu, Jaskaran Singh Saini, Collin J. Palian
  • CU-BASED BULK METALLIC GLASSES IN THE CU-ZR-HF-AL AND RELATED SYSTEMS
    Publication number: 20220056566
    Abstract: Cu-based bulk amorphous alloys in the quaternary Cu—Zr—Hf—Al alloy system are disclosed. A method of casting such alloys and articles comprising such alloys also are disclosed.
    Type: Application
    Filed: October 22, 2021
    Publication date: February 24, 2022
    Applicant: Oregon State University
    Inventors: Donghua Xu, Jaskaran Singh Saini, Collin J. Palian
  • Movable side wall and opening/closing mechanism for railroad boxcars
    Patent number: 10906562
    Abstract: A movable side wall and opening/closing mechanism for railroad boxcars, comprising a side wall assembly (1), an end-portion opening/closing mechanism (2), a hinged rod assembly (3), a lateral door central clamping device (4), a upper transmission shaft assembly (5), a lower transmission shaft assembly (6), a upper track assembly (7) and a lower track assembly (8); upon loading/unloading cargo, the movable side wall can be opened further, so as to allow multiple forklifts of any tonnage on the ground to load/unload cargo to/from any positions of a carriage; the hinged rod assembly (3) and the central clamping device (4) are provided to keep the movable side wall reliably closed in order to ensure security and self-locking during transportation.
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: February 2, 2021
    Assignee: CRRC YANGTZE CO., LTD.
    Inventors: Donghua Xu, Qiangjun Jiang, Haitao Liu, Fengwei Liu, Wenliang Liu, Chuanfeng Jing, Baolei Wang, Jinfa Zhang, Xunqi Zhang, Huanyun Liu
  • MOVABLE SIDE WALL AND OPENING/CLOSING MECHANISM FOR RAILROAD BOXCARS
    Publication number: 20180257673
    Abstract: A movable side wall and opening/closing mechanism for railroad boxcars, comprising a side wall assembly (1), an end-portion opening/closing mechanism (2), a hinged rod assembly (3), a lateral door central clamping device (4), a upper transmission shaft assembly (5), a lower transmission shaft assembly (6), a upper track assembly (7) and a lower track assembly (8); upon loading/unloading cargo, the movable side wall can be opened further, so as to allow multiple forklifts of any tonnage on the ground to load/unload cargo to/from any positions of a carriage; the hinged rod assembly (3) and the central clamping device (4) are provided to keep the movable side wall reliably closed in order to ensure security and self-locking during transportation.
    Type: Application
    Filed: November 2, 2016
    Publication date: September 13, 2018
    Applicant: CSR YANGZE CO., LTD.
    Inventors: Donghua XU, Qiangjun JIANG, Haitao LIU, Fengwei LIU, Wenliang LIU, Chuanfeng JING, Baolei WANG, Jinfa ZHANG, Xunqi ZHANG, Huanyun LIU
  • Bulk amorphous refractory glasses based on the Ni(-Cu-)-Ti(-Zr)-Al alloy system
    Patent number: 7591910
    Abstract: Bulk amorphous alloys based on quaternary Ni—Zr—Ti—Al alloy system, and the extension of this quaternary system to higher order alloys by the addition of one or more alloying elements, methods of casting such alloys, and articles made of such alloys are provided.
    Type: Grant
    Filed: December 4, 2003
    Date of Patent: September 22, 2009
    Assignee: California Institute of Technology
    Inventors: Donghua Xu, William L. Johnson
  • Bulk amorphous refractory glasses based on the Ni-Nb-Sn ternary alloy system
    Patent number: 7368022
    Abstract: Bulk amorphous alloys based on a ternary Ni—Nb—Sn alloy system, and the extension of this ternary system to higher order alloys by the addition of one or more alloying elements, methods of casting such alloys and articles made of such alloys are provided.
    Type: Grant
    Filed: July 22, 2003
    Date of Patent: May 6, 2008
    Assignee: California Institute of Technology
    Inventors: Haein Choi Yim, Donghua Xu, William L. Johnson
  • Bulk amorphous refractory glasses based on the ni-nb-sn ternary alloy system
    Publication number: 20060237105
    Abstract: Bulk amorphous alloys based on a ternary Ni—Nb—Sn alloy system, and the extension of this ternary system to higher order alloys by the addition of one or more alloying elements, methods of casting such alloys and articles made of such alloys are provided.
    Type: Application
    Filed: July 22, 2003
    Publication date: October 26, 2006
    Inventors: Haein Yim, Donghua Xu, William Johnson
  • Bulk amorphous refractory glasses based on the ni(-cu-)-ti(-zr)-a1 alloy system
    Publication number: 20060137772
    Abstract: Bulk amorphous alloys based on quaternary Ni—Zr—Ti—Al alloy system, and the extension of this quaternary system to higher order alloys by the addition of one or more alloying elements, methods of casting such alloys, and articles made of such alloys are provided.
    Type: Application
    Filed: December 4, 2003
    Publication date: June 29, 2006
    Inventors: Donghua Xu, William Johnson
  • Bulk amorphous refractory glasses based on the Ni(-Cu-)-Ti(-Zr)-Al alloy system
    Patent number: RE47321
    Abstract: Bulk amorphous alloys based on quaternary Ni—Zr—Ti—Al alloy system, and the extension of this quaternary system to higher order alloys by the addition of one or more alloying elements, methods of casting such alloys, and articles made of such alloys are provided.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: March 26, 2019
    Assignee: California Institute of Technology
    Inventors: William L. Johnson, Donghua Xu