Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7890283 | Malfunction detection system and integrated circuit | Eiichi Sadayuki | 2011-02-15 |
| 7850086 | Semiconductor integrated circuit and noncontact information system including it | George Nakane | 2010-12-14 |
| 7138699 | Semiconductor integrated circuit and noncontact information medium | George Nakane | 2006-11-21 |
| 7011252 | IC card and OS activation method for the same | Mitsuyoshi Ohya | 2006-03-14 |
| 6907088 | Contactless IC card for preventing incorrect data recovery in demodulation of an amplitude-modulated carrier wave | Joji Nakane | 2005-06-14 |
| 6882193 | Voltage detection circuit, power-on/off reset circuit, and semiconductor device | Hiroshige Hirano, Kouji Asari | 2005-04-19 |
| 6848620 | Semiconductor integrated circuit | George Nakane | 2005-02-01 |
| 6822493 | Voltage detection circuit, power-on/off reset circuit, and semiconductor device | Hiroshige Hirano, Kouji Asari | 2004-11-23 |
| 6659352 | Semiconductor integrated circuit, a contactless information medium having the semiconductor integrated circuit, and a method of driving the semiconductor integrated circuit | Hiroaki Asada, Joji Nakane, Taketoshi Matsuura, Atsuo Inoue | 2003-12-09 |
| 6538482 | Voltage detection circuit, power-on/off reset circuit, and semiconductor device | Hiroshige Hirano, Kouji Asari | 2003-03-25 |
| 6246624 | Voltage detection circuit power-on/off reset circuit and semiconductor device | Hiroshige Hirano, Kouji Asari | 2001-06-12 |
| 6067265 | Reference potential generator and a semiconductor memory device having the same | Toshio Mukunoki, Hiroshige Hirano, George Nakane, Tetsuji Nakakuma, Nobuyuki Moriwaki | 2000-05-23 |
| 5953277 | Reference potential generator and a semiconductor memory device having the same | Toshio Mukunoki, Hiroshige Hirano, George Nakane, Tetsuji Nakakuma, Nobuyuki Moriwaki | 1999-09-14 |
| 5898608 | Method for operating a ferroelectric memory | Hiroshige Hirano, Nobuyuki Moriwaki | 1999-04-27 |
| 5864247 | Voltage detection circuit, power-on/off reset circuit, and semiconductor device | Hiroshige Hirano, Kouji Asari | 1999-01-26 |
| 5828615 | Reference potential generator and a semiconductor memory device having the same | Toshio Mukunoki, Hiroshige Hirano, George Nakane, Tetsuji Nakakuma, Nobuyuki Moriwaki | 1998-10-27 |
| 5694445 | Semiconductor device with means for charge recycling | Hiroshige Hirano | 1997-12-02 |
| 5675530 | Ferroelectric memory device | Hiroshige Hirano, Nobuyuki Moriwaki | 1997-10-07 |
| 5546342 | Semiconductor memory device including reverse and rewrite means | George Nakane, Toshio Mukunoki, Nobuyuki Moriwaki, Hiroshige Hirano, Tetsuji Nakakuma | 1996-08-13 |
| 5523974 | Semiconductor memory device with redundant memory cell backup | Hiroshige Hirano, George Nakane, Tetsuji Nakakuma, Nobuyuki Moriwaki, Toshio Mukunoki | 1996-06-04 |
| 5515312 | Semiconductor memory device | Tetsuji Nakakuma, Hiroshige Hirano, George Nakane, Nobuyuki Moriwaki, Toshio Mukunoki | 1996-05-07 |
| 5467302 | Semiconductor memory device | Hiroshige Hirano, Nobuyuki Moriwaki, George Nakane | 1995-11-14 |
| 5448159 | Reference voltage generator | Makoto Kojima, Naomi Miyake | 1995-09-05 |
| 5430671 | Semiconductor memory device | Hiroshige Hirano, Yoshihisa Nagano | 1995-07-04 |
| 5392234 | Semiconductor memory device | Hiroshige Hirano, Nobuyuki Moriwaki, George Nakane | 1995-02-21 |