Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5757110 | Electrical discharge lamp with ultraviolet filtering globe having rear end part supported insulating base | Kunimasa Motiduki, Masakazu Nagasawa | 1998-05-26 |
| 5463270 | Insulating base for discharge lamp device | Kunimasa Motiduki, Masakazu Nagasawa | 1995-10-31 |
| 5432399 | Discharge lamp apparatus | Masakazu Nagasawa, Masami Handa, Kunimasa Motiduki | 1995-07-11 |
| 5250872 | Discharge lamp unit having improved discharge tube mount | Hirohiko Ohshio, Yonemasa Yoshida, Yasuo Hirozumi, Masami Handa | 1993-10-05 |
| 5220235 | Discharge lamp device | Yasuyoshi Numajiri, Shinichi Irisawa, Masakazu Nagasawa, Yonemasa Yoshida | 1993-06-15 |
| 5177397 | Discharge lamp assembly with insulating tubular member and metal band around pinch seal | Masakazu Nagasawa, Nobuo Ohkawai, Goichi Oda, Masaya Shidoh, Shinichi Irisawa | 1993-01-05 |
| 5132881 | Vehicular headlamp of the projection type | Saburo Watanabe, Masami Handa, Hirohiko Ohshio | 1992-07-21 |
| 5126619 | Discharge lamp unit | Hirohiko Ohshio | 1992-06-30 |
| 5059855 | Discharge lamp base construction | Shinichi Irisawa, Masakazu Nagasawa | 1991-10-22 |
| 4547838 | Electric lamp assembly with a molded plastic base | — | 1985-10-15 |
| 4339685 | Sealed beam lamp assembly | Norio Saguchi, Hideki Ishii, Yoshiaki Sakakibara, Masakazu Nagasawa, Osami Saitoh +1 more | 1982-07-13 |