Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8363496 | Semiconductor memory device performing refresh operation and method of testing the same | Tomonori Hayashi, Yuji Sugiyama | 2013-01-29 |
| 7606094 | Semiconductor memory device and control method thereof | Masski Seno | 2009-10-20 |
| 5940331 | Output circuit of semiconductor memory device | — | 1999-08-17 |
| 5629944 | Test mode setting circuit of test circuit for semiconductor memory | — | 1997-05-13 |
| 5563832 | Semiconductor memory device having interface units memorizing available memory cell sub-arrays | — | 1996-10-08 |
| 5394369 | Semiconductor memory device incorporating redundancy memory cells having parallel test function | — | 1995-02-28 |
| 5347491 | Dynamic random access memory device having autorefreshing unit for producing internal row address strobe signal and internal column address strobe signal | — | 1994-09-13 |
| 5295099 | Dynamic random access memory device having static column mode of operation without destruction of data bit | — | 1994-03-15 |
| 5091884 | Semiconductor memory device with improved address discriminating circuit for discriminating an address assigned defective memory cell replaced with redundant memory cell | — | 1992-02-25 |
| 4975881 | Semiconductor memory device provided with an improved redundant decoder | — | 1990-12-04 |