Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857744 | Optical projection printing apparatus wherein wafer mark has a grating pitch in the sagittal plane of the first optical system | Toshiei Kurosaki, Seiji Yonezawa, Soichi Katagiri | 1989-08-15 |
| 4840447 | Light modulating device array | — | 1989-06-20 |
| 4802153 | Optical information processor and method for accessing rotating record carrier utilizing acousto-optic light deflector including holding a focus error signal during track jumping | Takeshi Maeda, Yoshito Tsunoda | 1989-01-31 |