Patents by Inventor Yu-Ta Chu

Yu-Ta Chu 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).

  • Patent number: 11982019
    Abstract: A crystal growth doping apparatus and a crystal growth doping method are provided. The crystal growth doping apparatus includes a crystal growth furnace and a doping device that includes a feeding tube inserted to the furnace body along an oblique insertion direction, and a storage cover and a gate tube that are disposed in the feeding tube. The feeding tube extends from an outer surface thereof to form a placement opening, and the placement opening is recessed from an edge thereof to form an upper recessed portion and a lower recessed portion along the oblique insertion direction. The storage cover includes a storage tank and a handle. When the storage cover is disposed in the gate tube body, the gate tube body is configured to isolate an inner space of the feeding tube from the placement opening.
    Type: Grant
    Filed: May 27, 2022
    Date of Patent: May 14, 2024
    Assignee: GLOBALWAFERS CO., LTD.
    Inventors: Yu-Chih Chu, Tang-Chi Lin, Han-Sheng Wu, Hsien-Ta Tseng
  • Publication number: 20080082877
    Abstract: A testing system selects one of testing paths based on a control unit and a test switching unit for randomly executing tests upon a plurality of products based on the testing requirements of each of examining units, so as to decrease the costs of equipment, interference between the tests on several products, the idle time of a testing devise and the testing period for tested products.
    Type: Application
    Filed: September 18, 2006
    Publication date: April 3, 2008
    Inventors: Ho-Cheng Hung, Kun-Lin Tsai, Po-Liang Lin, Chun-Ming Wu, Yi-Cheng Hung, Yu-Ta Chu