Patents by Inventor Rong-Jinn Shieh

Rong-Jinn Shieh 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).

  • Spinneret assembly for composite spinning and manufacturing method for a biomass composite fiber implementing the same
    Patent number: 10731275
    Abstract: The present application provides a manufacturing method and a spinneret assembly that includes a nozzle body, an outer spinning solution channel formed inside the nozzle body, and at least one inner spinning solution channel formed inside the nozzle body. A nozzle outlet formed at an end of the nozzle body is immersed in a solidification liquid. The outer spinning solution channel includes an outer liquid outlet, and the at least one inner spinning solution channel includes an inner liquid outlet. The outer liquid outlet and the inner liquid outlet communicate with the nozzle outlet and are confluent at the nozzle outlet. A diameter of the inner liquid outlet is smaller than a diameter of the outer liquid outlet. An outer-layer dope spinned from the outer liquid outlet covers an inner-layer dope spinned from the inner liquid outlet so as to generate a solid filamentary fiber with multi-layer materials.
    Type: Grant
    Filed: July 4, 2018
    Date of Patent: August 4, 2020
    Assignee: National Chung-Shan Institute of Science and Technology
    Inventors: Sywe-Bin Chien, Hung-Sung Liu, Rong-Jinn Shieh
  • SPINNERET ASSEMBLY FOR COMPOSITE SPINNING AND MANUFACTURING METHOD FOR A BIOMASS COMPOSITE FIBER IMPLEMENTING THE SAME
    Publication number: 20190186048
    Abstract: The present application provides a manufacturing method and a spinneret assembly that includes a nozzle body, an outer spinning solution channel formed inside the nozzle body, and at least one inner spinning solution channel formed inside the nozzle body. A nozzle outlet formed at an end of the nozzle body is immersed in a solidification liquid. The outer spinning solution channel includes an outer liquid outlet, and the at least one inner spinning solution channel includes an inner liquid outlet. The outer liquid outlet and the inner liquid outlet communicate with the nozzle outlet and are confluent at the nozzle outlet. A diameter of the inner liquid outlet is smaller than a diameter of the outer liquid outlet. An outer-layer dope spinned from the outer liquid outlet covers an inner-layer dope spinned from the inner liquid outlet so as to generate a solid filamentary fiber with multi-layer materials.
    Type: Application
    Filed: July 4, 2018
    Publication date: June 20, 2019
    Inventors: Sywe-Bin Chien, Hung-Sung Liu, Rong-Jinn Shieh