Issued Patents All Time
Showing 51–75 of 92 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5095461 | Erase circuitry for a non-volatile semiconductor memory device | Tadashi Miyakawa | 1992-03-10 |
| 5067111 | Semiconductor memory device having a majority logic for determining data to be read out | Hiroshi Iwahashi, Sadayuki Yokoyama | 1991-11-19 |
| 5055706 | Delay circuit that resets after pulse-like noise | Hiroto Nakai, Hiroshi Iwahashi, Shigeru Kumagai | 1991-10-08 |
| 5053841 | Nonvolatile semiconductor memory | Tadashi Miyakawa, Tadayuki Taura, Atsushi Shoji, Michiharu Inami | 1991-10-01 |
| 5034926 | Non-volatile semiconductor memory | Tadayuki Taura, Sadayuki Yokoyama | 1991-07-23 |
| 5010520 | Nonvolatile semiconductor memory device with stabilized data write characteristic | Hidenobu Minagawa, Yuuichi Tatsumi, Hiroshi Iwahashi, Hiroto Nakai, Mizuho Imai | 1991-04-23 |
| 4979146 | Electrically erasable non-volatile semiconductor device | Sadayuki Yokoyama, Hiroshi Iwahashi, Kaoru Nakagawa | 1990-12-18 |
| 4970686 | Semiconductor memory cells and semiconductor memory device employing the semiconductor memory cells | Yasuo Naruke, Thoru Mochizuki, Taira Iwase | 1990-11-13 |
| 4967394 | Semiconductor memory device having a test cell array | Hidenobu Minagawa, Yuuichi Tatsumi, Hiroshi Iwahashi, Mizuho Imai | 1990-10-30 |
| 4949152 | Semiconductor integrated circuit | Hiroshi Iwahashi | 1990-08-14 |
| 4922133 | Voltage detecting circuit | Hiroshi Iwahashi, Hiroto Nakai | 1990-05-01 |
| 4916334 | High voltage booster circuit for use in EEPROMs | Hidenobu Minagawa, Yuuichi Tatsumi, Hiroshi Iwahashi, Mizuho Imai | 1990-04-10 |
| 4905314 | Semiconductor integrated circuit device having an object circuit to which output voltages of the sub- and main booster circuits are applied | Hideo Kato, Hiroshi Iwahashi, Akira Narita, Shinichi Kikuchi | 1990-02-27 |
| 4882507 | Output circuit of semiconductor integrated circuit device | Yuuichi Tatsumi, Hidenobu Minagawa, Hiroshi Iwahashi, Mizuho Imai | 1989-11-21 |
| 4858192 | Semiconductor memory device with redundancy circuit | Yuuichi Tatsumi, Hidenobu Minagawa, Hiroshi Iwahashi, Mizuho Imai | 1989-08-15 |
| 4831592 | Nonvolatile semiconductor memory device | Hiroto Nakai, Hiroshi Iwahashi, Isao Sato, Shigeru Kumagai, Kazuto Suzuki | 1989-05-16 |
| 4819212 | Nonvolatile semiconductor memory device with readout test circuitry | Hiroto Nakai, Hiroshi Iwahashi, Isao Sato, Shigeru Kumagai, Kazuto Suzuki | 1989-04-04 |
| 4804929 | Control pulse generator | Hideo Kato, Hiroshi Iwahashi, Akira Narita, Shinichi Kikuchi | 1989-02-14 |
| 4799195 | Semiconductor memory device with a sense amplifier | Hiroshi Iwahashi | 1989-01-17 |
| 4794562 | Electrically-erasable/programmable nonvolatile semiconductor memory device | Hideo Kato, Hiroshi Iwahashi, Akira Narita, Shinichi Kikuchi | 1988-12-27 |
| 4725915 | Semiconductor integrated circuit | Hiroshi Jwahashi, Hiroshi Harada, Shinichi Tanaka, Hideki Sumihara | 1988-02-16 |
| 4697101 | Read/write control circuit | Hiroshi Iwahashi, Masaki Momodomi, Hidenobu Minagawa, Kazuto Suzuki, Akira Narita | 1987-09-29 |
| 4692834 | Electrostatic discharge protection circuit with variable limiting threshold for MOS device | Hiroshi Iwahashi, Akira Narita | 1987-09-08 |
| 4612462 | Logic circuit having voltage booster | Hiroshi Iwahashi | 1986-09-16 |
| 4611301 | Read only memory | Hiroshi Iwahashi, Hidenobu Minagawa | 1986-09-09 |