Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6239920 | Zoom lens system | Hiroyuki Matsumoto, Akio Miyata | 2001-05-29 |
| 6222681 | Zoom lens system | Hiroyuki Matsumoto, Akio Miyata | 2001-04-24 |
| 4874918 | Vacuum brazing apparatus | Takeo Kato, Tetsurou Tsushima | 1989-10-17 |