Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4849737 | Person-number detecting system | Shinji Kirihata, Tsunehiko Araki, Yuuki Yorifuji, Hiroshi Matsuda, Hidekazu Himezawa | 1989-07-18 |
| 4819209 | Simultaneous dual access semiconductor memory device | Yoshihiro Takemae | 1989-04-04 |
| 4807193 | Semiconductor memory device with a detection circuit to detect word line potential | Yoshihiro Takemae, Takeo Takematsu, Kimiaki Sato, Nobumi Kodama, Makoto Yanagisawa +1 more | 1989-02-21 |