Issued Patents All Time
Showing 51–57 of 57 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4721931 | Stripline filter | Toshio Nishikawa, Youhei Ishikawa, Hideyuki Kato | 1988-01-26 |
| 4721369 | Gradient index single lens | Shigeyuki Suda, Rohra Aruna | 1988-01-26 |
| 4706052 | Dielectric resonator | Youhei Ishikawa | 1987-11-10 |
| 4696552 | Projection device with refractive index distribution type lens | Shigeyuki Suda | 1987-09-29 |
| 4674843 | Gradient index lens | Takeshi Baba | 1987-06-23 |
| 4618762 | In-focus position detecting apparatus | Sadahiko Tsuji | 1986-10-21 |
| 4571033 | Zoom lens | Masatake Kato, Nozomu Kitagishi | 1986-02-18 |