Patents by Inventor Byung-Hahn Yeh

Byung-Hahn Yeh 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).

  • Patent number: 6042671
    Abstract: Members for a rocket nozzle and a fabrication method thereof, wherein members for a rocket nozzle stacked in order of: a heat-resistant element; a first adhesive which is a thermosetting room temperature-hardening epoxy resin; a second adhesive which is a thermoplastic resin; a third adhesive which is a thermosetting medium temperature-hardening epoxy resin; and a structural body. The fabrication method according to the present invention comprises stacking a first adhesive, which is a thermosetting room temperature-hardening epoxy resin, on a surface of a heat-resistant element; stacking a second adhesive, which is a thermoplastic resin, on the first adhesive; stacking a third adhesive which is a thermosetting medium temperature-hardening epoxy resin, on the second adhesive and thereafter performing a vacuum shaping process; and stacking a structural body on the third adhesive and thereafter hardening the members.
    Type: Grant
    Filed: June 17, 1998
    Date of Patent: March 28, 2000
    Assignee: Agency for Defense Development
    Inventors: Byeong-Yeol Park, Byung-Hahn Yeh, Sang-Ki Chung, Yun-Chul Kim, Bal Jung