Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7275971 | Arc tube, Discharge lamp, and production method of such arc tube, which enables brighter illuminance | Kenji Fujiwara, Shiro Iida | 2007-10-02 |
| 7059929 | Arc tube manufacturing method that reduces unevenness in thickness of a phosphor layer on an inner surface of a bent glass tube | Shiro Iida, Kenji Itaya | 2006-06-13 |
| 7053555 | Arc tube, discharge lamp, and production method of such arc tube, which enables brighter illuminance | Kenji Fujiwara, Shiro Iida | 2006-05-30 |
| 6281625 | Fluorescent lamp with specific protective film | Hirokazu Tachibana, Yoshinori Otaka, Fumihiro Inagaki | 2001-08-28 |
| 5124618 | Shatter-proof fluorescent lamp | Yoshinori Ohtaka, Haruo Shibata, Mutsuo Takahashi, Shigeru Kamiya | 1992-06-23 |