Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870620 | Dynamic random access memory device with internal refresh | Tadato Yamagata, Hiroshi Miyamoto, Shigeru Mori, Tetsuya Aono | 1989-09-26 |
| 4855613 | Wafer scale integration semiconductor device having improved chip power-supply connection arrangement | Hiroshi Miyamoto | 1989-08-08 |
| 4803663 | Semiconductor memory having divided bit lines and individual sense amplifiers | Hiroshi Miyamoto | 1989-02-07 |