Patents by Inventor Hyeon-Joo Ha

Hyeon-Joo Ha 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).

  • Filler metal for TIG welding
    Patent number: 11679453
    Abstract: The present invention provide a filler metal for TIG welding capable of stable welding, of which heat flux feeding area is wider than conventional wire filler metal and heat input per unit length is increased. The filler metal for TIG welding which is continuously supplied on a base metal to be melted by an arc after forming the arc between the base metal and an electrode over the base metal and supplying shield gas around the arc, wherein the cross-section of the filler metal has curved shape of which surface facing the electrode is concavely curved to the electrode.
    Type: Grant
    Filed: June 11, 2020
    Date of Patent: June 20, 2023
    Assignee: PUKYONG NATIONAL INDUSTRY-UNIVERSIT COOPERATION FOUNDATION
    Inventors: Sang-Myung Cho, Dong-Soo Oh, Hyo-Sik Ham, Hyeon-Joo Ha, Hee-Seop Shin, Jae-Ho Jun, Jae-Gyu Byun, Jung-Hyun Park, Hyuk-Yong Kwon
  • FILLER METAL FOR TIG WELDING
    Publication number: 20200298348
    Abstract: The present invention provide a filler metal for TIG welding capable of stable welding, of which heat flux feeding area is wider than conventional wire filler metal and heat input per unit length is increased.
    Type: Application
    Filed: June 11, 2020
    Publication date: September 24, 2020
    Inventors: Sang-Myung Cho, Dong-Soo Oh, Hyo-Sik Ham, Hyeon-Joo Ha, Hee-Seop Shin, Jae-Ho Jun, Jae-Gyu Byun, Jung-Hyun Park, Hyuk-Yong Kwon
  • FILLER METAL FOR TIG WELDING
    Publication number: 20160199947
    Abstract: The present invention provide a filler metal for TIG welding capable of stable welding, of which heat flux feeding area is wider than conventional wire filler metal and heat input per unit length is increased.
    Type: Application
    Filed: December 3, 2013
    Publication date: July 14, 2016
    Inventors: Sang-Myung Cho, Dong-Soo Oh, Hyo-Sik Ham, Hyeon-Joo Ha, Hee-Seop Shin, Jae-Ho Jun, Jae-Gyu Byun, Jung-Hyun Park, Hyuk-Yong Kwon