Patents by Inventor Hee Hyun SEO

Hee Hyun SEO 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).

  • HOIST COMMUNICATION DEVICE IN RAIL CAR OF AUTOMATED MATERIAL HANDLING SYSTEM
    Publication number: 20230249722
    Abstract: A hoist communication device in a rail car of an automated material handling system in which a master communication unit and a slave communication unit perform power line communication through one power supply line provided on a belt and a rail car controller connected to the master communication unit is individually communicated with a plurality of gripper devices connected to the slave communication unit using different carrier frequencies.
    Type: Application
    Filed: January 10, 2023
    Publication date: August 10, 2023
    Inventors: Hak Seo SEO, Jin Hwan KO, Sung Ik KIM, Sung Hyuk YOUN, Youl Kwon SUNG, Hee Hyun SEO, Seung Hwan LEE, Deok Ha LEE, Se Hun LEE, Hyeong Cheol CHOI