Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6680696 | Positioning satellite system for measuring position of signal source | — | 2004-01-20 |
| 5734163 | Zero method of controlling quadrupole mass spectrometer and control circuit arrangement to carry out this method | Osamu Tsukakoshi, Toshio Koike, Takashi Kawashima | 1998-03-31 |