Patents by Inventor Bonjin KOO

Bonjin KOO 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).

  • Extruder for metal material and 3D printer using the same
    Patent number: 11110540
    Abstract: An extruder for a metal material includes a cylinder having a receiving space in which a solid metal material is provided, a nozzle extending from a lower end of the cylinder, an upper coil provided on an outer surface of the cylinder and melting the solid metal material to form a liquid metal material, and a first lower coil provided on an outer surface of the nozzle to control an extruded shape of the liquid metal material.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: September 7, 2021
    Assignees: Electronics and Telecommunications Research Institute, Daelim Chemical Co., Ltd.
    Inventors: Yong Suk Yang, hong hyun Shin, Bonjin Koo, In-Kyu You, sunghoon Hong
  • HUMIDITY SENSOR
    Publication number: 20210055246
    Abstract: Provided is a humidity sensor including a support body, an RFID chip, an antenna, and a capacitor on the support body, a top cover sheet on the RFID chip and the antenna, and a hydrophobic material pattern on the capacitor, wherein the capacitor is exposed by the top cover sheet, the hydrophobic material pattern has a network shape including a plurality of holes, and an electrostatic capacitance of the capacitor changes according to humidity.
    Type: Application
    Filed: November 14, 2019
    Publication date: February 25, 2021
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Woo Seok YANG, Sunghoon HONG, Yong Suk YANG, Bonjin KOO
  • EXTRUDER FOR METAL MATERIAL AND 3D PRINTER USING THE SAME
    Publication number: 20170312849
    Abstract: An extruder for a metal material includes a cylinder having a receiving space in which a solid metal material is provided, a nozzle extending from a lower end of the cylinder, an upper coil provided on an outer surface of the cylinder and melting the solid metal material to form a liquid metal material, and a first lower coil provided on an outer surface of the nozzle to control an extruded shape of the liquid metal material.
    Type: Application
    Filed: May 1, 2017
    Publication date: November 2, 2017
    Applicants: Electronics and Telecommunications Research Institute, Daelim Chemical Co., Ltd.
    Inventors: Yong Suk YANG, hong hyun SHIN, Bonjin KOO, In-Kyu YOU, sunghoon HONG