Patents by Inventor Jia-Cheng Yeh

Jia-Cheng Yeh 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).

  • Polymer and light-emitting device
    Patent number: 11912816
    Abstract: A polymer and a light-emitting device employing the same are provided. The polymer includes a first repeat unit with a structure represented by Formula (I): wherein the definitions of R1, R2, A1, A2, A3, and Z1 and n are as defined in the specification. At least one of A1, A2, and A3 is not hydrogen.
    Type: Grant
    Filed: April 28, 2021
    Date of Patent: February 27, 2024
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Chin-Hui Chou, Han-Cheng Yeh, Jia-Lun Liou, Mei-Rurng Tseng
  • Environmentally friendly straw and manufacturing method thereof
    Patent number: 11850812
    Abstract: The invention teaches an environmentally friendly straw and its manufacturing method. The straw includes a tubular body having a through channel inside connecting two openings respectively at two ends of the tubular body, an outer layer surrounding the tubular body between the two openings formed by a leveling machine, an inner layer, as an inner wall of the tubular body, surrounding the channel formed by a honing machine. The straw is manufactured by leveling the tubular body, and honing the channel by a honing machine. As such, a smooth layer between the channel and the tubular body is achieved so that the straw is convenient to clean and use.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: December 26, 2023
    Inventor: Jia-Cheng Yeh
  • ENVIRONMENTALLY FRIENDLY STRAW AND MANUFACTURING METHOD THEREOF
    Publication number: 20210197508
    Abstract: The invention teaches an environmentally friendly straw and its manufacturing method. The straw includes a tubular body having a through channel inside connecting two openings respectively at two ends of the tubular body, an outer layer surrounding the tubular body between the two openings formed by a leveling machine, an inner layer, as an inner wall of the tubular body, surrounding the channel formed by a honing machine. The straw is manufactured by leveling the tubular body, and honing the channel by a honing machine. As such, a smooth layer between the channel and the tubular body is achieved so that the straw is convenient to clean and use.
    Type: Application
    Filed: December 27, 2019
    Publication date: July 1, 2021
    Inventor: Jia-Cheng Yeh