Patents by Inventor Robin Hsu

Robin Hsu 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).

  • Developer container including flange for supporting container on flat surface
    Patent number: 6064846
    Abstract: A developer container having a spiral groove around the periphery, a developer supply hole at one end, two protruding positioning strips raised from the periphery at two opposite sides of the developer supply holes an annular flange at an opposite end for enabling the developer container to be put on a flat surface in vertical, two opposed notches formed on the annular flange, and two toothed blocks respectively suspended in the notches for engagement with respective toothed blocks at a driving shaft in an electrophotographic image forming apparatus for synchronous rotation with the driving shaft.
    Type: Grant
    Filed: August 11, 1999
    Date of Patent: May 16, 2000
    Assignee: General Plastic Industrial Co., Ltd.
    Inventors: Jui-Chi Wang, Robin Hsu, Ya-Li Huang, Kuan-Tung Li
  • Toner cartridge
    Patent number: D430197
    Type: Grant
    Filed: December 2, 1999
    Date of Patent: August 29, 2000
    Inventors: Jui-Chi Wang, Robin Hsu, Ya-Li Huang, Kuan-Tung Li