Issued Patents All Time
Showing 251–275 of 282 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6023423 | Nonvolatile semiconductor memory device | — | 2000-02-08 |
| 6014330 | Non-volatile semiconductor memory device | Tetsuo Endoh, Yoshiyuki Tanaka, Riichiro Shirota, Susumu Shuto, Tomoharu Tanaka +2 more | 2000-01-11 |
| 5978265 | Non-volatile semiconductor memory device with nand type memory cell arrays | Ryouhei Kirisawa, Riichiro Shirota, Ryozo Nakayama, Masaki Momodomi, Yasuo Itoh +1 more | 1999-11-02 |
| 5949101 | Semiconductor memory device comprising multi-level logic value of the threshold voltage | — | 1999-09-07 |
| 5946230 | Nonvolatile semiconductor memory device having the reliability of gate insulating film of memory cells enhanced and method for manufacturing the same | Kazuhiro Shimizu, Shinji Satoh | 1999-08-31 |
| 5946231 | Non-volatile semiconductor memory device | Tetsuo Endoh, Yoshiyuki Tanaka, Riichiro Shirota, Susumu Shuto, Tomoharu Tanaka +2 more | 1999-08-31 |
| 5940321 | Nonvolatile semiconductor memory device | Ken Takeuchi, Koji Sakui, Tomoharu Tanaka | 1999-08-17 |
| 5909399 | Non-volatile semiconductor memory device and memory system using the same | Tomoharu Tanaka, Masaki Momodomi, Hideo Kato, Hiroto Nakai, Yoshiyuki Tanaka +8 more | 1999-06-01 |
| 5889304 | Nonvolatile semiconductor memory device | Hiroshi Watanabe, Kazuhiro Shimizu, Yuji Takeuchi | 1999-03-30 |
| 5818791 | Non-volatile semiconductor memory device and memory system using the same | Tomoharu Tanaka, Masaki Momodomi, Hideo Kato, Hiroto Nakai, Yoshiyuki Tanaka +8 more | 1998-10-06 |
| 5793696 | Non-volatile semiconductor memory device and memory system using the same | Tomoharu Tanaka, Masaki Momodomi, Hideo Kato, Hiroto Nakai, Yoshiyuki Tanaka +8 more | 1998-08-11 |
| 5774397 | Non-volatile semiconductor memory device and method of programming a non-volatile memory cell to a predetermined state | Tetsuo Endoh, Yoshiyuki Tanaka, Riichiro Shirota, Susumu Shuto, Tomoharu Tanaka +2 more | 1998-06-30 |
| 5766996 | Method of manufacturing a semiconductor device | Toshiyuki Hayakawa | 1998-06-16 |
| 5724300 | Non-volatile semiconductor memory device and memory system using the same | Tomoharu Tanaka, Masaki Momodomi, Hideo Kato, Hiroto Nakai, Yoshiyuki Tanaka +8 more | 1998-03-03 |
| 5698879 | Nonvolatile semiconductor memory device | Tomoharu Tanaka, Ken Takeuchi | 1997-12-16 |
| 5680347 | Nonvolatile semiconductor memory device | Ken Takeuchi, Koji Sakui, Tomoharu Tanaka | 1997-10-21 |
| 5615165 | Non-volatile semiconductor memory device and memory system using the same | Tomoharu Tanaka, Masaki Momodomi, Hideo Kato, Hiroto Nakai, Yoshiyuki Tanaka +8 more | 1997-03-25 |
| 5602789 | Electrically erasable and programmable non-volatile and multi-level memory systemn with write-verify controller | Tetsuo Endoh, Riichiro Shirota, Kazunori Ohuchi, Ryouhei Kirisawa, Tomoharu Tanaka +1 more | 1997-02-11 |
| 5568421 | Semiconductor memory device on which selective transistors are connected to a plurality of respective memory cell units | — | 1996-10-22 |
| 5555204 | Non-volatile semiconductor memory device | Tetsuo Endoh, Yoshiyuki Tanaka, Riichiro Shirota, Susumu Shuto, Tomoharu Tanaka +2 more | 1996-09-10 |
| 5546351 | Non-volatile semiconductor memory device and memory system using the same | Tomoharu Tanaka, Masaki Momodomi, Hideo Kato, Hiroto Nakai, Yoshiyuki Tanaka +8 more | 1996-08-13 |
| 5528547 | Electrically erasable programmable read-only memory with electric field decreasing controller | Riichiro Shirota, Ryouhei Kirisawa, Yoshihisa Iwata, Masaki Momodomi | 1996-06-18 |
| 5469444 | Electrically erasable and programmable non-volatile memory system with write-verify controller using two reference levels | Tetsuo Endoh, Riichiro Shirota, Kazunori Ohuchi, Ryouhei Kirisawa, Tomoharu Tanaka +1 more | 1995-11-21 |
| 5402373 | Electrically erasable programmable read-only memory with electric field decreasing controller | Riichiro Shirota, Ryouhei Kirisawa, Yoshihisa Iwata, Masaki Momodomi | 1995-03-28 |
| 5397723 | Process for forming arrayed field effect transistors highly integrated on substrate | Riichiro Shirota, Masaki Momodomi, Ryozo Nakayama, Ryouhei Kirisawa, Tetsuro Endoh +1 more | 1995-03-14 |