Issued Patents 2004
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6822421 | Bipedal robot with position for energy storage device | Kenichi Ogawa, Takuro Koyanagi, Hideaki Takahashi, Hiroshi Matsuda | 2004-11-23 |
| 6805814 | Phosphor for light-emitting element excited by vacuum ultra-violet ray | Takayoshi Ezuhara, Toshinori Isobe | 2004-10-19 |
| 6802990 | Fluorescent substances for vacuum ultraviolet radiation excited light-emitting devices | Kenji Toda, Mineo Sato, Keiji Ono, Takashi Takeda | 2004-10-12 |
| 6736994 | Phosphor | Takashi Takeda | 2004-05-18 |
| 6689292 | Method of producing aluminate phosphor | Keiji Ono | 2004-02-10 |
| 6680004 | Method of producing aluminate fluorescent substance, a fluorescent substance and a diode containing a fluorescent substance | Keiji Ono | 2004-01-20 |
| 6676853 | Phosphor for vacuum ultraviolet excitation material | Kyota Ueda, Tadashi Endo, Keiji Ono | 2004-01-13 |