Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6816341 | Hard disk drive utilizing second lubricant over a first lubricant having a phosophezine group | Hiroyuki Matsumoto, Hiroshi Tani, Koji Sonoda, Takayuki Nakakawaji, Mina Amo +1 more | 2004-11-09 |
| 6773784 | Magnetic disk having ultrathin carbon protective film and magnetic disk apparatus | Kouji Sonoda, Hiroshi Tani, Hiroyuki Matsumoto, Toshinori Ono | 2004-08-10 |