Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4854684 | Compact zoom lens | — | 1989-08-08 |
| 4842386 | Variable focal length objective | Nozomu Kitagishi, Hiroki Nakayama, Shigeyuki Suda, Jun Hattori | 1989-06-27 |
| 4810070 | Lens system having a good image performance for white light | Shigeyuki Suda, Jun Hattori, Nozomu Kitagishi, Hiroki Nakayama | 1989-03-07 |
| 4802747 | Compact zoom lens | — | 1989-02-07 |