Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4860255 | Semiconductor memory | Katsuhiro Shimohigashi, Hiroo Masuda, Kunihiko Ikuzaki | 1989-08-22 |
| 4839860 | Semiconductor device having head only memory with differential amplifier | Takashi Shinoda, Kikuo Sakai, Masahiro Ogata, Yoshiaki Onishi, by Junko Onishi, administratrix | 1989-06-13 |
| 4839865 | Selective application of voltages for testing storage cells in semiconductor memory arrangements | Katsuyuki Sato, Kazumasa Yanagisawa | 1989-06-13 |
| 4828974 | Photographic light-sensitive material containing gelatin hardener | Hisashi Okamura | 1989-05-09 |