Issued Patents All Time
Showing 51–59 of 59 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6504305 | Fluorescent lamp | Kazuaki Ohkubo, Yoshinori Tanabe, Takeshi Arakawa | 2003-01-07 |
| 6445118 | Lamp having conductor structure and non-conductor structure provided between filaments | Kazuaki Ohkubo, Takeshi Arakawa, Yoshinori Tanabe, Kenjiro Hashimoto, Yoko Shimomura | 2002-09-03 |
| 6414426 | High-efficiency light source | Izumi Akashi, Shoetsu Sakamoto | 2002-07-02 |
| 6313754 | Escape light instrument | Yoko Shimomura, Yoshinori Tanabe | 2001-11-06 |
| 6242857 | High efficiency fluorescent lamp with low color rendering property | Kenjiro Hashimoto, Tadashi Yano, Syouetsu Sakamoto | 2001-06-05 |
| 6224240 | Light source | Yasuhiko Yamanaka, Syouetsu Sakamoto, Tetsuji Takeuchi | 2001-05-01 |
| 6153971 | Light source with only two major light emitting bands | Yasuhiko Yamanaka, Syouetsu Sakamoto, Tetsuji Takeuchi | 2000-11-28 |
| D421616 | Agitator | — | 2000-03-14 |
| 5403261 | Illumination equipment | Syouetu Sakamoto | 1995-04-04 |