Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6242857 | High efficiency fluorescent lamp with low color rendering property | Kenjiro Hashimoto, Tadashi Yano, Masanori Shimizu | 2001-06-05 |
| 6224240 | Light source | Masanori Shimizu, Yasuhiko Yamanaka, Tetsuji Takeuchi | 2001-05-01 |
| 6153971 | Light source with only two major light emitting bands | Masanori Shimizu, Yasuhiko Yamanaka, Tetsuji Takeuchi | 2000-11-28 |