Issued Patents All Time
Showing 26–30 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6223311 | Semiconductor memory device having deterioration determining function | Kunihiro Katayama, Takayuki Tamura, Shigemasa Shiota | 2001-04-24 |
| 6199187 | External storage device and memory access control method thereof | Takayuki Tamura, Shigemasa Shiota, Kunihiro Katayama | 2001-03-06 |
| 6031758 | Semiconductor memory device having faulty cells | Kunihiro Katayama, Takayuki Tamura, Satoshi Watatani, Kiyoshi Inoue, Shigemasa Shiota | 2000-02-29 |
| 5978941 | Semiconductor memory device having deterioration determining function | Kunihiro Katayama, Takayuki Tamura, Shigemasa Shiota | 1999-11-02 |
| 5732208 | External storage device and memory access control method thereof | Takayuki Tamura, Shigemasa Shiota, Kunihiro Katayama | 1998-03-24 |