Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5027167 | Semiconductor intergrated circuit | Osamu Kagaya, Yasunari Umemoto | 1991-06-25 |
| 4954866 | Semiconductor integrated circuit memory | Hirotoshi Tanaka, Hiroki Yamashita, Noboru Masuda, Yasunari Umemoto, Osamu Kagaya | 1990-09-04 |