Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5195155 | Optical coupling apparatus and manufacturing method of the same, and lens holder | Makoto Shimaoka, Tetsuo Kumazawa, Atsushi Sasayama | 1993-03-16 |
| 5046798 | Semiconductor light emitting device and apparatus using the same | Tetsuo Kumazawa, Makoto Shimaoka, Kunio Aiki | 1991-09-10 |