Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10708064 | Semiconductor device, boot method, and boot program | Seishiro Nagano | 2020-07-07 |
| 9092619 | Data processing apparatus | Hirokazu Tsuruta, Atsuo Yamaguchi | 2015-07-28 |
| 8619991 | Encoding/decoding circuit | Atsuo Yamaguchi | 2013-12-31 |
| 8559634 | Encoding/decoding circuit | Atsuo Yamaguchi | 2013-10-15 |
| 8140858 | Data processing apparatus | Hirokazu Tsuruta, Atsuo Yamaguchi | 2012-03-20 |
| 7471789 | Encryption circuit achieving higher operation speed | Atsuo Yamaguchi | 2008-12-30 |
| 6625060 | Microcomputer with efficient program storage | — | 2003-09-23 |
| 6535449 | Semiconductor memory unit in which power consumption can be restricted | — | 2003-03-18 |
| 6430650 | Semiconductor storage device for group management of data sectors | — | 2002-08-06 |
| 6408372 | Data processing control device | — | 2002-06-18 |
| 6272052 | Block-erase type semiconductor storage device with independent memory groups having sequential logical addresses | — | 2001-08-07 |
| 6167483 | Block erase type nonvolatile semiconductor memory device | — | 2000-12-26 |
| 5946714 | Semiconductor storage device utilizing address management tables and table state maps for managing data storage and retrieval | — | 1999-08-31 |
| 5883842 | Memory card having block erasure type memory units which are used even when partially defective | — | 1999-03-16 |
| 5841699 | Storage device and method to detect its degradation | — | 1998-11-24 |
| 5761733 | Data storage device with security system and ferroelectric data input section | — | 1998-06-02 |
| 5717886 | Semiconductor disk device and memory management method | — | 1998-02-10 |
| 5627783 | Semiconductor disk device | — | 1997-05-06 |
| 5619452 | Semiconductor disk device with a constant data-writing time period | — | 1997-04-08 |