Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5033306 | Quartz vacuum gauge | — | 1991-07-23 |
| 4959999 | Vacuum gauge of thermo-conductive type with quartz oscillator | — | 1990-10-02 |
| 4851792 | Temperature-compensated oscillator circuit | Osamu Ochiai | 1989-07-25 |
| 4638664 | Quartz barometer | — | 1987-01-27 |
| 4597288 | Barometer | Hideaki Kyogoku | 1986-07-01 |