Patents by Inventor Eui Keun CHOI

Eui Keun 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).

  • Publication number: 20230201858
    Abstract: Provided is a hybrid spray pump which sprays and applies a viscous liquid in a fine particle state to a material. The hybrid spray pump sprays effectively fine particles of the viscous liquid according to various characteristics of the viscous liquid ranging from low to high viscosity, and improves the quality of a particle application process by mixing fine particles and aerosol particles by spraying.
    Type: Application
    Filed: September 21, 2022
    Publication date: June 29, 2023
    Applicant: PROTEC CO., LTD.
    Inventors: Seung Min HONG, Eui Keun CHOI, Soo Bin OH, Keon Hee KIM
  • Publication number: 20230201848
    Abstract: A spray pump formed to atomize and apply a viscous liquid may micro-discharge the viscous liquid ranging from low to high viscosity in a quantitative manner, may miniaturize a device capable of atomizing liquids by spraying, and may shorten a spraying path to prevent changes in liquid properties and keep spraying quality constant.
    Type: Application
    Filed: September 22, 2022
    Publication date: June 29, 2023
    Applicant: PROTEC CO., LTD.
    Inventors: Seung Min HONG, EUI KEUN CHOI, Sung Il PARK, Keon Hee KIM
  • Publication number: 20230204028
    Abstract: A low hysteresis piezo-electric pump using a piezo-electric element as an actuator to dispense a liquid may maintain accurate viscous liquid discharge characteristics by adjusting an applied voltage in response to changes in behavioral characteristics of a piezo-electric actuator depending on causes such as temperature change.
    Type: Application
    Filed: September 21, 2022
    Publication date: June 29, 2023
    Applicant: PROTEC CO., LTD.
    Inventors: Seung Min HONG, EUI KEUN CHOI, Keon Hee KIM
  • Patent number: 11476632
    Abstract: There is provided a laser apparatus for a printed electronic system according to an exemplary embodiment of the present invention including: a laser generating unit which oscillates a laser beam; a laser changing unit which changes an intensity or a wavelength of the laser beam oscillated from the laser generating unit; a laser control unit which controls the intensity or a magnitude of the wavelength of the laser beam which is changed by the laser changing unit; and a laser steering unit which changes a traveling direction of the laser beam output from the laser changing unit to be directed to a target, and the laser control unit controls the intensity or the magnitude of the wavelength of the laser beam in accordance with a state of a printing pattern formed on the target.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: October 18, 2022
    Assignee: PROTEC CO., LTD.
    Inventors: Eui Keun Choi, Dae Yong Lee, Da Hai Zhang, Seung Hwan Choi, Seung Min Hong
  • Publication number: 20220330436
    Abstract: The present disclosure relates to a substrate processing apparatus and a substrate processing method, for manufacturing a flexible circuit board, and more specifically, to a substrate processing apparatus and a substrate processing method, for manufacturing a flexible circuit board, capable of manufacturing a flexible circuit board with a fine line width without undergoing a photolithographic process using a mask. The substrate processing apparatus and the substrate processing method, for manufacturing a flexible circuit board, according to the present disclosure, can efficiently manufacture a flexible circuit board having a fine line width at low costs.
    Type: Application
    Filed: June 28, 2022
    Publication date: October 13, 2022
    Applicant: PROTEC CO., LTD.
    Inventors: Seung Min HONG, EUI KEUN CHOI
  • Patent number: 11420219
    Abstract: A printing apparatus for printed electronics according to the present invention may include: ejection head units which each have at least one nozzle for ejecting ink droplets to perform drop-on-demand or continuous printing; a jetting observation unit which is provided at one side of the nozzle and configured to observe the ink droplet ejected from the nozzle; a lighting unit which is provided at the other side of the nozzle and configured to provide light to the jetting observation unit; an alignment observation unit which is configured to observe an aligned state between the nozzle and a substrate; and a fluid supply unit which is configured to supply the ink to the nozzle, in which the ejection head units include a single-nozzle head unit, and a multi-nozzle head unit provided separately from the single-nozzle head unit.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: August 23, 2022
    Assignee: PROTEC CO., LTD.
    Inventors: Eui Keun Choi, Dae Yong Lee, Da Hai Zhang, Seung Hwan Choi, Seung Min Hong
  • Publication number: 20220193706
    Abstract: Provided is an apparatus for ejecting viscous liquid aerosol, and more particularly, an apparatus for ejecting viscous liquid aerosol capable of dispensing a viscous liquid to a work with a fine line width by ejecting the viscous liquid in the form of aerosols. The apparatus for ejecting viscous liquid aerosol may be configured compactly by miniaturizing a device capable of aerosolizing and ejecting viscous liquid in the form of aerosols. In addition, since the apparatus for ejecting viscous liquid aerosol has a structure that is easy to miniaturize, it is easy to uniformly maintain the characteristics of aerosol.
    Type: Application
    Filed: November 26, 2021
    Publication date: June 23, 2022
    Applicant: PROTEC CO., LTD.
    Inventors: Seung Min HONG, Hansung LEE, EUI KEUN CHOI, HEEJAE JIN
  • Publication number: 20200303892
    Abstract: There is provided a laser apparatus for a printed electronic system according to an exemplary embodiment of the present invention including: a laser generating unit which oscillates a laser beam; a laser changing unit which changes an intensity or a wavelength of the laser beam oscillated from the laser generating unit; a laser control unit which controls the intensity or a magnitude of the wavelength of the laser beam which is changed by the laser changing unit; and a laser steering unit which changes a traveling direction of the laser beam output from the laser changing unit to be directed to a target, and the laser control unit controls the intensity or the magnitude of the wavelength of the laser beam in accordance with a state of a printing pattern formed on the target.
    Type: Application
    Filed: September 21, 2018
    Publication date: September 24, 2020
    Inventors: Eui Keun CHOI, Dae Yong LEE, Da Hai ZHANG, Seung Hwan CHOI, Seung Min HONG
  • Publication number: 20190329274
    Abstract: A printing apparatus for printed electronics according to the present invention may include: ejection head units which each have at least one nozzle for ejecting ink droplets to perform drop-on-demand or continuous printing; a jetting observation unit which is provided at one side of the nozzle and configured to observe the ink droplet ejected from the nozzle; a lighting unit which is provided at the other side of the nozzle and configured to provide light to the jetting observation unit; an alignment observation unit which is configured to observe an aligned state between the nozzle and a substrate; and a fluid supply unit which is configured to supply the ink to the nozzle, in which the ejection head units include a single-nozzle head unit, and a multi-nozzle head unit provided separately from the single-nozzle head unit.
    Type: Application
    Filed: January 12, 2018
    Publication date: October 31, 2019
    Inventors: Eui Keun CHOI, Dae Yong LEE, Da Hai ZHANG, Seung Hwan CHOI, Seung Min HONG