Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6055122 | Magnetic recording apparatus having a reduced thickness | Naoto Sugawara, Hiroki Ishida | 2000-04-25 |
| 5004900 | Focusing error detecting apparatus with light switching and detector sampling | Michihiro Tadokoro, Kazuo Okada | 1991-04-02 |
| 4956812 | Wavelength selective optical recording and reproducing device | Kazuo Okada, Motomu Yoshimura, Mitsuo Maeda | 1990-09-11 |
| 4956813 | Apparatus for regenerating information from records made by optical-wavelength-multiplexing method | Kazuo Okada | 1990-09-11 |