Issued Patents All Time
Showing 51–59 of 59 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6097621 | Memory cell array architecture for random access memory device | — | 2000-08-01 |
| 6028784 | Ferroelectric memory device having compact memory cell array | Toshiyuki Nagata | 2000-02-22 |
| 5759912 | Method of manufacturing a semiconductor device having multi-layered wiring without hillocks at the insulating layers | Kenichi Otsuka | 1998-06-02 |
| 5607878 | Contact plug forming method | Mari Otsuka, Tomonori KITAKURA, Kenichi Otsuka | 1997-03-04 |
| 5498571 | Method of manufacturing a semiconductor device having reliable multi-layered wiring | Kenichi Otsuka | 1996-03-12 |
| 5496393 | Gas purification capability measuring method for gas purification apparatus and gas purification apparatus | Kenichi Otsuka | 1996-03-05 |
| 5292750 | Therapeutic agents | Yoshiaki Yoshikuni, Nobutoshi Ojima | 1994-03-08 |
| 5192772 | Therapeutic agents | Yoshiaki Yoshikuni, Nobutoshi Ojima | 1993-03-09 |
| 4912963 | Method and an apparatus for evaluating the gas purifying ability of a gas purifier | Tohru Watanabe, Katsuya Okumura | 1990-04-03 |