Issued Patents All Time
Showing 26–35 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6339579 | Semiconductor laser diode driving device and driving method | Yuichi Kamioka, Kenji Koishi, Yoshiyuki Miyabata, Kenichi Tatehara, Ikuo Hidaka +1 more | 2002-01-15 |
| 6201963 | Mobile communication system | — | 2001-03-13 |
| 5548594 | Compact AGC circuit with stable characteristics | — | 1996-08-20 |
| D365885 | Fluorescent lamp | Masashi Sangen, Takeshi Matsumura | 1996-01-02 |
| D314629 | Fluorescent lamp | Masashi Sangen, Masaru Yamaguchi | 1991-02-12 |
| D303297 | Fluorescent lamp | Masashi Sangen | 1989-09-05 |
| D302733 | Compact self-ballasted fluorescent lamp | Masashi Sangen, Takeshi Matsumura | 1989-08-08 |
| 4841193 | Fluorescent lamp device with incandescent bulb type base cap | Masashi Sangen | 1989-06-20 |
| D295082 | Fluorescent lamp | Masashi Sangen, Shuuzou Kanayama | 1988-04-05 |
| D295083 | Fluorescent lamp | Masashi Sangen, Shuuzou Kanayama | 1988-04-05 |