Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5112707 | Mask structure for lithography | Hideo Kato, Hirohumi Shibata, Osamu Takamatsu | 1992-05-12 |
| 4956249 | Mask structure for lithography | Hideo Kato, Hirohumi Shibata, Osamu Takamatsu | 1990-09-11 |