Issued Patents All Time
Showing 26–45 of 45 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6992930 | Semiconductor memory device, method for driving the same and portable electronic apparatus | Nobuaki Matsuoka, Yoshinao Morikawa, Hiroshi Iwata, Akihide Shibata, Kohji Hamaguchi | 2006-01-31 |
| 6992926 | Driver circuit for semiconductor storage device and portable electronic apparatus | Yasuaki Iwase, Yoshifumi Yaoi, Hiroshi Iwata, Akihide Shibata, Yoshinao Morikawa | 2006-01-31 |
| 6990022 | Semiconductor memory device and portable electronic apparatus | Yoshinao Morikawa, Hiroshi Iwata, Akihide Shibata | 2006-01-24 |
| 6985397 | Semiconductor storage device and portable electronic equipment having the same | Kei Tokui, Hiroshi Iwata, Yoshifumi Yaoi, Akihide Shibata | 2006-01-10 |
| 6982906 | Electrically programmable and electrically erasable semiconductor memory device | Nobuaki Matsuoka, Yoshinao Morikawa, Hiroshi Iwata, Akihide Shibata | 2006-01-03 |
| 6977843 | Semiconductor memory device with malfunction prevention device, and portable electronic apparatus using the same | Koji Hamaguchi, Yoshinao Morikawa, Hiroshi Iwata, Akihide Shibata | 2005-12-20 |
| 6894929 | Method of programming semiconductor memory device having memory cells and method of erasing the same | Nobuaki Matsuoka, Yoshinao Morikawa, Hiroshi Iwata, Akihide Shibata | 2005-05-17 |
| 6862251 | Semiconductor memory device | Yoshifumi Yaoi, Hiroshi Iwata, Akihide Shibata, Yoshinao Morikawa | 2005-03-01 |
| 6535425 | Nonvolatile semiconductor memory device | Makoto Ihara, Toshiji Ishii | 2003-03-18 |
| 6081450 | Non-volatile semiconductor memory device in which read, write and erase operations can be simultaneously performed in different memory cell array blocks | — | 2000-06-27 |
| 5602777 | Semiconductor memory device having floating gate transistors and data holding means | Shounosuke Ueno | 1997-02-11 |
| 5463635 | Semiconductor memory device including means for checking the operation of an internal address generator | Ryoichi Kumazawa | 1995-10-31 |
| 5295109 | Semiconductor memory | — | 1994-03-15 |
| 5216678 | Test method for a semiconductor memory device applied to a margin test | — | 1993-06-01 |
| 5006725 | Pulse generator for use in an integrated circuit | Yasuo Torimaru | 1991-04-09 |
| 4916661 | Semiconductor memory device with bit line pairs crossed at least once with respect to each other | Hirofumi Higashino, Tomoyuki Tagami | 1990-04-10 |
| 4791319 | Semiconductor device with redundancy circuit and means for activating same | Tomoyuki Tagami | 1988-12-13 |
| 4757218 | Semiconductor IC device with word lines shielded from voltage changes in adjacent lines | — | 1988-07-12 |
| 4686709 | Optical Transmission circuit | — | 1987-08-11 |
| 4670765 | Semiconductor photodetector element | Tutomu Nakamura, Masaru Shiraishi | 1987-06-02 |