Issued Patents All Time
Showing 51–55 of 55 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6579754 | Semiconductor memory device having ferroelectric film and manufacturing method thereof | Kiyoshi Ogata, Kazuhiko Horikoshi, Jun Tanaka, Hisayuki Kato, Keiichi Yoshizumi +1 more | 2003-06-17 |
| 6445025 | Semiconductor memory device and manufacturing method thereof | Kiyoshi Ogata, Kazuhiko Horikoshi, Jun Tanaka, Hisayuki Kato, Keiichi Yoshizumi +1 more | 2002-09-03 |
| 6316798 | Ferroelectric memory device and method for manufacturing the same | Kiyoshi Ogata, Kazuhiko Horikoshi, Hisayuki Kato, Keiichi Yoshizumi, Masahito Yamazaki | 2001-11-13 |
| 6239457 | Semiconductor memory device and manufacturing method thereof | Kiyoshi Ogata, Kazuhiko Horikoshi, Jun Tanaka, Hisayuki Kato, Keiichi Yoshizumi +1 more | 2001-05-29 |
| 6031694 | Magnetic head with protective film comprising amorphous CaMgSi.sub.2 b. O.su6, Mg.sub.2 SiO.sub.4 and/or MgAl.sub.2 O.sub.4 | Takuo Tamura, Asao Nakano, Kiyoshi Ogata, Souzou Sasajima, Noriyuki Kumasaka | 2000-02-29 |