Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4988578 | Method for manufacturing a thin film magnetic recording medium | Tsutomu Yamashita, Tu Chen | 1991-01-29 |
| 4929500 | Corrosion resistant magnetic disk | Tsutomu Yamashita, Tu Chen | 1990-05-29 |
| 4898774 | Corrosion and wear resistant magnetic disk | Tsutomu Yamashita, Tu Chen, Ga-Lane Chen | 1990-02-06 |
| 4749459 | Method for manufacturing a thin film magnetic recording medium | Tsutomu Yamashita, Tu Chen | 1988-06-07 |