Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5353265 | Magneto optical overwriting methods using a single optical head designed for a two-beam overwrite | Miyozo Maeda, Yasunobu Hashimoto, Ken-ichi Itoh, Seiya Ogawa | 1994-10-04 |
| 5144601 | Magneto-optical overwriting methods using erasing pulses, each of which has a higher frequency and narrower width than that of the overwriting pulses | Miyozo Maeda, Yasunobu Hashimoto, Ken-ichi Itoh, Seiya Ogawa | 1992-09-01 |
| 4831611 | Optical writing and reading method and apparatus | Masateru Sasaki | 1989-05-16 |