Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4848862 | Laser beam scanner | Kozo Yamazaki, Toshiyuki Ichikawa, Hiroyuki Ikeda, Hirokazu Aritake, Fumio Yamagishi | 1989-07-18 |
| 4832464 | Optical system with grating lens assembly for correcting wavelength aberrations | Masayuki Kato, Satoshi Maeda, Fumio Yamagishi, Hiroyuki Ikeda | 1989-05-23 |
| 4824191 | Optical pickup | Masayuki Kato, Fumio Yamagishi, Shin Hasegawa, Hiroyuki Ikeda | 1989-04-25 |
| 4810046 | Light beam scanning apparatus | Fumio Yamagishi, Shinya Hasegawa, Hiroyuki Ikeda | 1989-03-07 |