Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7190211 | Semiconductor device equipped with a voltage step-up circuit | Michio Nakagawa, Kazuo Sato, Yasuyuki Ohnishi, Kazunori Torii | 2007-03-13 |
| 6888399 | Semiconductor device equipped with a voltage step-up circuit | Michio Nakagawa, Kazuo Sato, Yasuyuki Ohnishi, Kazunori Torii | 2005-05-03 |
| 6324626 | Semiconductor memory | Hiroki Takagi | 2001-11-27 |
| 6307777 | Nonvolatile semiconductor storage device | Noriaki Katsuhara, Yoshihiro Tada | 2001-10-23 |
| 5973357 | Non-volatile memory elements | Junichi Hikita | 1999-10-26 |
| 5633821 | Nonvolatile memory device | Kiyoshi Nishimura, Hideki Hayashi, Jun Muramoto, Takaaki Fuchikami | 1997-05-27 |
| 5592409 | Nonvolatile memory | Kiyoshi Nishimura, Hideki Hayashi, Jun Muramoto, Takaaki Fuchikami | 1997-01-07 |
| 5561635 | PROM IC enabling a stricter memory cell margin test | Yoshihiro Tada | 1996-10-01 |
| 5541873 | Nonvolatile memory | Kiyoshi Nishimura, Hideki Hayashi, Jun Muramoto, Takaaki Fuchikami | 1996-07-30 |
| 5541871 | Nonvolatile ferroelectric-semiconductor memory | Kiyoshi Nishimura, Hideki Hayashi, Jun Muramoto, Takaaki Fuchikami | 1996-07-30 |
| 5535162 | Electrically erasable read only memory | — | 1996-07-09 |
| 5305276 | Non-volatile IC memory | — | 1994-04-19 |
| 5297101 | PROM IC with a margin test function | Yoshihiro Tada | 1994-03-22 |