Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4804600 | Lithographic mask structure and process for preparing the same | Hideo Kato, Keiko Matsuda | 1989-02-14 |
HS
Hirofumi Shibatya
Overall (1989): #136,551 of 140,708Top 100%
1
Patents 1989