Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859615 | Semiconductor memory cell capacitor and method for making the same | Takayuki Matsukawa | 1989-08-22 |
| 4855953 | Semiconductor memory device having stacked memory capacitors and method for manufacturing the same | Masahiro Shimizu, Kazuyasu Fujishima, Yoshio Matsuda | 1989-08-08 |