Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5879216 | Method of fixing mercury containing alloy within fluorescent tubes | Yasuto Yoshii, Shozo Miyamoto, Masayuki Tanaka, Masahiro Yoshimoto, Masao Kubo +2 more | 1999-03-09 |
| 5833506 | Method for manufacturing a fluorescent lamp | Toshiyoshi Oga, Masaru Saitoh, Nobuyuki Tsubakihara | 1998-11-10 |
| 5723939 | Circular fluorescent lamp | Toshiyoshi Oga, Hidehito Kawahara, Masashi Sangen | 1998-03-03 |