Issued Patents All Time
Showing 51–60 of 60 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5818927 | Circuit for controlling an on-hook voltage by the use of a balanced amplifier without supplying a constant current to the balanced amplifier | — | 1998-10-06 |
| 5797269 | Hydrogen storage containers | Kouichi Satoh, Shin Fujitani, Ikuo Yonezu, Koji Nishio | 1998-08-25 |
| 5754039 | Voltage-to-current converter using current mirror circuits | — | 1998-05-19 |
| 5734714 | Subscriber line interface circuit capable of realizing by a C-MOS circuit | — | 1998-03-31 |
| 5568547 | Subscriber circuit provided with a circuit for monitoring a subscriber instrument | — | 1996-10-22 |
| 5422948 | Subscriber line interface for improving the frequency characteristics of the transmitted and received signals | — | 1995-06-06 |
| 5202618 | Power supply system for electric circuits different in operating voltage | — | 1993-04-13 |
| 5115152 | Amplifier having polygonal-line characteristics employing two comparators | — | 1992-05-19 |
| 5099139 | Voltage-current converting circuit having an output switching function | — | 1992-03-24 |
| 4933578 | Voltage follower circuit | — | 1990-06-12 |