Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5607868 | Method of fabricating semiconductor device with channel ion implantation through a conductive layer | Masayuki Yoshida | 1997-03-04 |
| 5608241 | Semiconductor device having a memory cell portion and a logic portion | Sachiko Shibuya, Masayuki Yoshida, Osamu Matsumoto | 1997-03-04 |
| 5219775 | Manufacturing method for a floating gate semiconductor memory device by forming cell slits | Yukihiro Saeki, Osamu Matsumoto, Masayuki Yoshida, Takahide Mizutani, Tomohisa Shigematsu +3 more | 1993-06-15 |