Patents by Inventor WONHYUN SEOK

WONHYUN SEOK 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).

  • SYRINGE
    Publication number: 20150165128
    Abstract: Injection liquid is inhaled into a cylinder of a syringe through an injection needle, a passing hole and an inhalation path in order. The liquid in the syringe is injected into a patient's body through a discharge path, a filter and the passing hole in order. The injection occurs a filter holder is rotated at the same time with a movement of a pressure rib along a spiral groove when a needle holder carries out a rectilinear motion.
    Type: Application
    Filed: December 17, 2013
    Publication date: June 18, 2015
    Applicant: SANG-A FRONTEC CO., LTD.
    Inventors: WONHYUN SEOK, JOON HWAN CHUN, SOO-MIN CHAE