Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5633848 | Method and apparatus for cleaning an optical disk head on the basis of time accumulation | Shigenori Yanagi, Manabu Yamamoto | 1997-05-27 |
TM
Takashi Masaki
NTT: 1 patents #69 of 290Top 25%
Overall (1997): #71,763 of 185,788Top 40%
1
Patents 1997