Issued Patents All Time
Showing 51–75 of 116 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6512703 | Nonvolatile semiconductor memory | Koji Sakui | 2003-01-28 |
| 6511286 | Centrifugal blower and portable power working machine | — | 2003-01-28 |
| 6493267 | Nonvolatile semiconductor memory device having verify function | Yasuo Itoh, Yoshihisa Iwata | 2002-12-10 |
| 6431024 | Backpack-type working machine | Tsuneyoshi Yuasa, Kunio Tsutsui | 2002-08-13 |
| 6414893 | Nonvolatile semiconductor memory device and method of using the same | — | 2002-07-02 |
| 6370729 | Portable power working machine | — | 2002-04-16 |
| 6370081 | Nonvolatile semiconductor memory | Koji Sakui | 2002-04-09 |
| 6331960 | Nonvolatile semiconductor memory device and method for using the same | — | 2001-12-18 |
| 6307807 | Nonvolatile semiconductor memory | Koji Sakui | 2001-10-23 |
| 6240018 | Nonvolatile semiconductor memory device having verify function | Yasuo Itoh, Yoshihisa Iwata | 2001-05-29 |
| 6239495 | Multichip semiconductor device and memory card | Koji Sakui, Nobuo Hayasaka, Katsuya Okumura | 2001-05-29 |
| 6240022 | Non-volatile semiconductor memory device with block erase function | Koji Sakui, Hiroshi Nakamura, Toshihiko Himeno | 2001-05-29 |
| 6166979 | Nonvolatile semiconductor memory device and method for using the same | — | 2000-12-26 |
| RE36732 | Non-volatile memory device with a sense amplifier capable of copying back | — | 2000-06-13 |
| 6031764 | Nonvolatile semiconductor memory device | Kenichi Imamiya, Koji Sakui | 2000-02-29 |
| 6031760 | Semiconductor memory device and method of programming the same | Koji Sakui, Kenichi Imamiya, Kei Takano | 2000-02-29 |
| 6023424 | Nonvolatile semiconductor memory device having verify function | Yasuo Itoh, Yoshihisa Iwata | 2000-02-08 |
| 5898335 | High voltage generator circuit | Shigeru Atsumi, Yasuo Itoh | 1999-04-27 |
| 5880994 | Non-volatile semiconductor memory device having verify function | Yasuo Itoh, Yoshihisa Iwata | 1999-03-09 |
| 5847992 | Multi-level non-volatile semiconductor memory device having improved multi-level data storing circuits | Tomoharu Tanaka, Koji Sakui | 1998-12-08 |
| 5831900 | Nonvolatile multi-level semiconductor memory device with registers | — | 1998-11-03 |
| 5818756 | Non-volatile semiconductor memory device with block erase function | Koji Sakui, Hiroshi Nakamura, Toshihiko Himeno | 1998-10-06 |
| 5761122 | Semiconductor memory device with program/erase verification | Hiroshi Nakamura, Yoshihisa Iwata, Keniti Imamiya | 1998-06-02 |
| 5734286 | Driving device of charge pump circuit and driving pulse generation method thereof | Yasuhisa Takeyama, Yoshihisa Iwata, Hironori Banba, Hideko Oodaira | 1998-03-31 |
| 5726882 | Non-volatile semiconductor memory device with verify mode for verifying data written to memory cells | Yasuo Itoh, Yoshihisa Iwata | 1998-03-10 |