Patents by Inventor Chien-Jung HSU

Chien-Jung 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).

  • Injection molding method and mold mechanism
    Patent number: 10710287
    Abstract: An injection molding method includes the steps of positioning a core piece in a mold cavity through a plurality of positioning pins; injecting a molten plastic material into the mold cavity to surround and cover the core piece; maintaining the pressure inside the mold cavity at a predetermined maintaining time so that the core piece is positioned by the molten plastic material; retracting the positioning pins from the mold cavity when a predetermined retraction time is reached, so that spaces occupied by the positioning pins in the mold cavity can be filled with the molten plastic material; and completely curing the molten plastic material to form a finished product.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: July 14, 2020
    Assignee: Taiwan Green Point Enterprises Co., Ltd.
    Inventors: Ray-Long Tsai, Chi-Hung Liao, Yan-Hua Li, Chien-Jung Hsu, Chun-Hao Hu, Chia-Yu Yen
  • INJECTION MOLDING METHOD AND MOLD MECHANISM
    Publication number: 20180147760
    Abstract: An injection molding method includes the steps of positioning a core piece in a mold cavity through a plurality of positioning pins; injecting a molten plastic material into the mold cavity to surround and cover the core piece; maintaining the pressure inside the mold cavity at a predetermined maintaining time so that the core piece is positioned by the molten plastic material; retracting the positioning pins from the mold cavity when a predetermined retraction time is reached, so that spaces occupied by the positioning pins in the mold cavity can be filled with the molten plastic material; and completely curing the molten plastic material to form a finished product.
    Type: Application
    Filed: January 26, 2018
    Publication date: May 31, 2018
    Applicant: TAIWAN GREEN POINT ENTERPRISES CO., LTD.
    Inventors: Ray-Long Tsai, Chi-Hung Liao, Yan-Hua Li, Chien-Jung Hsu, Chun-Hao Hu, Chia-Yu Yen
  • INJECTION MOLDING METHOD AND MOLD MECHANISM
    Publication number: 20160107347
    Abstract: An injection molding method includes the steps of positioning a core piece in a mold cavity through a plurality of positioning pins; injecting a molten plastic material into the mold cavity to surround and cover the core piece; maintaining the pressure inside the mold cavity at a predetermined maintaining time so that the core piece is positioned by the molten plastic material; retracting the positioning pins from the mold cavity when a predetermined retraction time is reached, so that spaces occupied by the positioning pins in the mold cavity can be filled with the molten plastic material; and completely curing the molten plastic material to form a finished product.
    Type: Application
    Filed: October 16, 2015
    Publication date: April 21, 2016
    Applicant: Taiwan Green Point Enterprises Co., Ltd.
    Inventors: Ray-Long TSAI, Chi-Hung LIAO, Yan-Hua LI, Chien-Jung HSU, Chun-Hao HU, Chia-Yu YEN