Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5681632 | Optical information recording medium | Tetsuya Akiyama, Takeo Ohta, Ken'ichi Nagata, Katsumi Kawahara, Noboru Yamada | 1997-10-28 |
HK
Hideki Kitaura
Overall (1997): #141,772 of 185,788Top 80%
1
Patents 1997