Issued Patents 1994
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5361244 | Optical head and information recording apparatus | Shigeru Nakamura, Takeshi Nakao, Mariko Umeda | 1994-11-01 |
| 5321435 | Multi-diameter record dot light scanning apparatus | Takeshi Mochizuki, Susumu Saito, Shinichi Nishino, Takahiro Kikuchi | 1994-06-14 |
| 5315573 | Non-linear optical saturable absorber layer in an optical disk to discriminate wavelength above or below a threshold level of intensity | Takeshi Nakao, Kensuke Ogawa, Hirofumi Sukeda, Hisataka Sugiyama | 1994-05-24 |
| 5289001 | Laser beam scanning apparatus having a variable focal distance device and the variable focal distance device for use in the apparatus | Susumu Saito | 1994-02-22 |