Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6661176 | High pressure discharge lamp, high pressure discharge lamp lighting apparatus and luminaire therefor | Sadao Sakuguchi, Masazumi Ishida, Seiji Ashida, Shigemi Oku, Takahito Kashiwagi | 2003-12-09 |
| D482142 | Lamp bulb | Masazumi Ishida, Sadao Sakaguchi | 2003-11-11 |
| 6515422 | Photo catalyzer and discharge lamp having a photo catalytic layer | — | 2003-02-04 |