Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879679 | Dynamic random access memory having storage gate electrode grounding means | Shigeru Kikuda | 1989-11-07 |
| 4870620 | Dynamic random access memory device with internal refresh | Tadato Yamagata, Michihiro Yamada, Shigeru Mori, Tetsuya Aono | 1989-09-26 |
| 4855613 | Wafer scale integration semiconductor device having improved chip power-supply connection arrangement | Michihiro Yamada | 1989-08-08 |
| 4803663 | Semiconductor memory having divided bit lines and individual sense amplifiers | Michihiro Yamada | 1989-02-07 |