Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5195057 | Semiconductor memory device having a redundant memory which can be selectively placed in a not-in-use status | Yasushi Kasa, Seiji Hirayama | 1993-03-16 |
| 5179536 | Semiconductor memory device having means for replacing defective memory cells | Yasushi Kasa, Yoshihiro Takemae, Masanori Nagasawa, Akira Terui, Sunao Araki | 1993-01-12 |