Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6462720 | Light-emitting display device, target game apparatus using light-emitting display device, display switching method and target hit display method | Akihisa Yamashita, Kojiro Minami, Katsunori Hirasawa, Masatoshi Mukai, Yutaka Tsuji | 2002-10-08 |
| 6383097 | Table tennis apparatus | Kojiro Minami, Toshimitsu Oishi, Akihisa Yamashita, Hideki Kotani, Katsunori Hirasawa | 2002-05-07 |