Patents by Inventor Chul Hwan JANG

Chul Hwan JANG 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).

  • LUMBAR RETRACTOR
    Publication number: 20220378643
    Abstract: A lumbar retractor according to an embodiment comprises: a first fixing part for fixing the user's lumbar regions; a second fixing part for fixing the user's pelvic regions; and a connection part disposed between the first fixing part and the second fixing part to connect the first fixing part and the second fixing part, wherein the distance between the first fixing part and the second fixing part can be adjusted by changing the length of the connection part, and the first fixing part can press each of a plurality of segments of the user's lumbar regions individually.
    Type: Application
    Filed: November 18, 2019
    Publication date: December 1, 2022
    Inventors: Sang Heon LEE, Nack Hwan KIM, Chul Hwan JANG, Se Jun OH, In Beom KIM, Kyung Hee HAN