Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5028967 | Achromatic lens for ultraviolet rays | Nobusuke Yamada, Koji Tsukuma, Tetsuo Fujii, Hideaki Segawa, Shinichi Kondo | 1991-07-02 |
| 4938788 | Method of producing uniform silica glass block | Hideaki Segawa, Koji Tsukuma, Shinichi Kondo | 1990-07-03 |