Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7187582 | Erroneous operation preventing circuit of non-volatile memory device | — | 2007-03-06 |
| 7057922 | Nonvolatile semiconductor memory device | — | 2006-06-06 |
| 6865658 | Nonvolatile data management system using data segments and link information | Nobuaki Tomori, Kazuhiro Okamoto | 2005-03-08 |
| 6370058 | Non-volatile semiconductor memory device and system LSI including the same | — | 2002-04-09 |
| 6240032 | Non-volatile semiconductor memory allowing user to enter various refresh commands | — | 2001-05-29 |
| 6006313 | Semiconductor memory device that allows for reconfiguration around defective zones in a memory array | — | 1999-12-21 |
| 6000004 | Nonvolatile semiconductor memory device with write protect data settings for disabling erase from and write into a block, and erase and re-erase settings for enabling write into and erase from a block | — | 1999-12-07 |
| 5673222 | Nonvolatile semiconductor memory device | Masamitsu Taki | 1997-09-30 |
| 5619470 | Non-volatile dynamic random access memory | — | 1997-04-08 |
| 5488587 | Non-volatile dynamic random access memory | — | 1996-01-30 |
| 5414671 | Semiconductor memory device having operation control means with data judging function | — | 1995-05-09 |
| 5396461 | Non-volatile dynamic random access memory device | — | 1995-03-07 |
| 5381379 | Non-volatile dynamic random access memory device; a page store device and a page recall device used in the same; and a page store method and a page recall method | — | 1995-01-10 |
| 5287319 | Nonvolatile semiconductor memory device | — | 1994-02-15 |
| 5181188 | Semiconductor memory device | Yoshimitsu Yamauchi, Kenichi Tanaka, Keizo Sakiyama | 1993-01-19 |
| 5153853 | Method and apparatus for measuring EEPROM threshold voltages in a nonvolatile DRAM memory device | Michael D. Eby, Michael J. Griffus, Giao N. Pham | 1992-10-06 |
| 5146431 | Method and apparatus for page recall of data in an nonvolatile DRAM memory device | Michael D. Eby, Michael J. Griffus, Giao N. Pham | 1992-09-08 |
| 4962636 | Mower | Keiichi Sampei, Yosihito Dei, Kazuo Furukawa, Yoshihiro Kato | 1990-10-16 |
| 4941863 | Stepless speed change mechanism in belt transmission device | Keiichi Sampei, Masami Kawasaki, Yosihito Dei, Kazuo Furukawa | 1990-07-17 |
| 4934989 | Belt transmission | Kazuo Furukawa, Keiichi Sampei, Yoshihiro Kato, Yosihito Dei | 1990-06-19 |
| 4299348 | Method of making a game racket | — | 1981-11-10 |