Patents by Inventor Nakgyu CHOI

Nakgyu CHOI 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).

  • Kernel-type earphone having pressure balance structure
    Patent number: 11146876
    Abstract: The present disclosure relates to a kernel-type earphone which is capable of easily implementing a pressure balance structure while hardly affecting acoustic characteristics of a speaker unit by using an existing general diaphragm and an existing general gasket.
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: October 12, 2021
    Assignee: BSE Co., Ltd.
    Inventors: Nakgyu Choi, Eunsu Ko, Sangkyum Kim
  • KERNEL-TYPE EARPHONE HAVING PRESSURE BALANCE STRUCTURE
    Publication number: 20210021920
    Abstract: The present disclosure relates to a kernel-type earphone which is capable of easily implementing a pressure balance structure while hardly affecting acoustic characteristics of a speaker unit by using an existing general diaphragm and an existing general gasket.
    Type: Application
    Filed: April 17, 2020
    Publication date: January 21, 2021
    Inventors: Nakgyu CHOI, Eunsu KO, Sangkyum KIM