Patents by Inventor Xugeng Dai

Xugeng Dai 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).

  • Method and an equipment for producing rapid condensation hydrogen storage alloy powder
    Patent number: 6174345
    Abstract: The present invention relates to a method and apparatus of manufacturing nickel-metal-hydride alloy powder material. The furnace charge of nickel-metal-hydride alloy is melted in vacuum or argon atmosphere in this invention. After melting, the molten alloy is gas atomized to fine spherical powder or centrifugal atomized to flaky shape. Then the powders are fed into a hydrogen heat treatment chamber for hydrogen heat treatment and pulverization. This invention integrates the melting, pulverizing and hydrogen treatment of nickel-metal hydride alloy powder into a whole step. It can charge and pulverize continuously and is suitable for the large-scale industrialized production of homogeneous composition and least segregation nickel-metal hydride alloy powder.
    Type: Grant
    Filed: June 10, 1998
    Date of Patent: January 16, 2001
    Inventors: Yu Chen, Yun Cai, Dongping Yu, Xugeng Dai