Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7183838 | Semiconductor device having internal power supply voltage dropping circuit | — | 2007-02-27 |
| 7145813 | Semiconductor device with circuit for detecting abnormal waveform of signal and preventing the signal from being transmitted | — | 2006-12-05 |
| 6864719 | Semiconductor device protecting built-in transistor from the voltage applied at test mode | — | 2005-03-08 |
| 6704922 | Correcting method of mask and mask manufactured by said method | — | 2004-03-09 |
| 6697285 | Semiconductor memory device | — | 2004-02-24 |
| 6600685 | Semiconductor memory device having test mode | — | 2003-07-29 |
| 6034910 | Semiconductor memory device to which serial access is made and a method for accessing the same | — | 2000-03-07 |
| 5949703 | Semiconductor memory device in which data in programmable ROM can be apparently rewritten | Noboru Shibata, Hideo Kato, Kenji Yano | 1999-09-07 |
| 5446700 | Decoder circuit having CMOS inverter circuits | — | 1995-08-29 |
| 5403765 | Method of manufacturing double-layer gate programmable ROM | — | 1995-04-04 |
| 5392233 | Read only memory capable of realizing high-speed read operation | — | 1995-02-21 |
| 5349563 | Mask ROM | — | 1994-09-20 |
| 5305284 | Semiconductor memory device | — | 1994-04-19 |
| 5257230 | Memory device including redundancy cells with programmable fuel elements and process of manufacturing the same | Kazuhiko Nobori, Masamichi Asano, Makoto Takizawa, Shigefumi Ishiguro, Kazuo Yonehara +2 more | 1993-10-26 |
| 5208780 | Structure of electrically programmable read-only memory cells and redundancy signature therefor | Makoto Takizawa, Shigefumi Ishiguro, Kazuhiko Nobori | 1993-05-04 |
| 5172337 | Semiconductor memory device | Yasuo Naruke | 1992-12-15 |
| 5124948 | Mask ROM with spare memory cells | Makoto Takizawa, Masamichi Asano, Yasunori Arime | 1992-06-23 |
| 4970686 | Semiconductor memory cells and semiconductor memory device employing the semiconductor memory cells | Yasuo Naruke, Thoru Mochizuki, Masamichi Asano | 1990-11-13 |
| 4892841 | Method of manufacturing a read only semiconductor memory device | Shoji Ariizumi, Fujio Masuoka | 1990-01-09 |
| 4855248 | Method of making a semiconductor ROM device | Shoji Ariizumi, Fujio Masuoka | 1989-08-08 |
| 4748492 | Read only memory | Shoji Ariizumi, Fujio Masuoka | 1988-05-31 |
| 4737835 | Read only memory semiconductor device | Shoji Ariizumi, Fujio Masuoka | 1988-04-12 |
| 4649412 | Read only semiconductor memory device with polysilicon drain extensions | Shoji Ariizumi, Fujio Masuoka | 1987-03-10 |