Issued Patents All Time
Showing 26–49 of 49 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5650714 | Orthogonal signal generation system | Shoji Otaka | 1997-07-22 |
| 5634207 | Frequency converter capable of reducing noise components in local oscillation signals | Takafumi Yamaji, Satoshi Arai | 1997-05-27 |
| 5572630 | Image forming apparatus | Takashi Azuma, Tsutomu Ishiguro | 1996-11-05 |
| 5525924 | Log conversion circuit | Takashi Ueno, Mikio Koyama | 1996-06-11 |
| 5471171 | Amplifier device capable of realizing high slew rate with low power consumption | Tetsuro Itakura | 1995-11-28 |
| 5399992 | Amplifier device capable of performing highly efficient operation at low power | Tetsuro Itakura | 1995-03-21 |
| 5384501 | Integration circuit including a differential amplifier having a variable transconductance | Mikio Koyama | 1995-01-24 |
| 5373533 | FSK signal receiving device | Mikio Hayashihara, Hiroshi Tsurumi | 1994-12-13 |
| 5357295 | Image projecting apparatus provided with cartridge loader | Takanori Saitoh, Jun Nishiseko, Shuichi Saito | 1994-10-18 |
| 5349242 | Bidirectional switch circuit with automatic return-current path selector | Minoru Tanaka | 1994-09-20 |
| 5311086 | Multiplying circuit with improved linearity and reduced leakage | Takafumi Yamaji, Chikau Yakahashi | 1994-05-10 |
| 5243235 | Sample-and-hold circuit | Myles Wakayama | 1993-09-07 |
| 5237211 | Bidirectional switch circuit with automatic return-current path selector | Minoru Tanaka | 1993-08-17 |
| 5227681 | Integration circuit | Mikio Koyama | 1993-07-13 |
| 5162799 | A/D (analog-to-digital) converter | — | 1992-11-10 |
| 5081423 | Integrator and active filter including integrator with simple phase compensation | Mikio Koyama | 1992-01-14 |
| 5079515 | Linearized differential amplifier | — | 1992-01-07 |
| 5006818 | Linear differential amplifier | Mikio Koyama | 1991-04-09 |
| 4904952 | Differential amplifier incorporating negative resistance | — | 1990-02-27 |
| 4884036 | Band-pass filter | Mikio Koyama | 1989-11-28 |
| 4866767 | Subscriber line interface circuit | Minoru Tanaka, Satoru Yoshida | 1989-09-12 |
| 4803382 | Voltage comparator circuit | Mikio Hayashibara | 1989-02-07 |
| 4800339 | Amplifier circuit | Hisashi Yamada | 1989-01-24 |
| 4743872 | Switched capacitor circuit | — | 1988-05-10 |