Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6690548 | Ramp for use in information recording disk apparatus, and information recording disk apparatus | Ichiroh Koyanagi, Yuhji Kobayashi, Tetsuo Ishikawa | 2004-02-10 |
| 6487051 | Ramp for information recording disk apparatus | Ichiroh Koyanagi | 2002-11-26 |
| 6160686 | Composite ramp structure for data storage devices | Thomas R. Albrecht, Charles H. Heino, Jr. | 2000-12-12 |