Patents by Inventor Kyoung-Jin Lee-Hoff

Kyoung-Jin Lee-Hoff 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).

  • Soft starter, operating method, and switching system
    Patent number: 11108344
    Abstract: The invention relates to a soft starter (10) for connecting at least one main circuit (12, 14, 16), each of which includes a bypass circuit (20) having a semiconductor switch (22). Said soft starter (10) comprises a control unit (40) for actuating the bypass circuit (20), and the control unit (40) is equipped with a control signal input (44). According to the invention, the control unit (40) has a separate safety signal input (42).
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: August 31, 2021
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Kyoung-Jin Lee-Hoff, Johann Seitz, Klaus Aufschneider, Dirk Hertz, Markus Meier, Stefan Zitzler
  • SOFT STARTER, OPERATING METHOD, AND SWITCHING SYSTEM
    Publication number: 20190190407
    Abstract: The invention relates to a soft starter (10) for connecting at least one main circuit (12, 14, 16), each of which includes a bypass circuit (20) having a semiconductor switch (22). Said soft starter (10) comprises a control unit (40) for actuating the bypass circuit (20), and the control unit (40) is equipped with a control signal input (44). According to the invention, the control unit (40) has a separate safety signal input (42).
    Type: Application
    Filed: August 3, 2017
    Publication date: June 20, 2019
    Inventors: Kyoung-Jin Lee-Hoff, Johann Seitz, Klaus Aufschneider, Dirk Hertz, Markus Meier, Stefan Zitzler