Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8543845 | Method for suppressing a voltage fluctuation applying to a load by a second power section with the same or opposite voltage polarity | Yoshito Koyama, Seiji Miyoshi, Eiji Miyachika | 2013-09-24 |
| 8183940 | Temperature control device | Yoshito Koyama, Koji Nakamuta | 2012-05-22 |
| 8179114 | Voltage converting device and voltage converting method | — | 2012-05-15 |
| 8084886 | Uninterruptible power supply apparatus | — | 2011-12-27 |
| 6263015 | Analog/digital integrated subscriber circuit | Yutaka Awata, Seiji Miyoshi, Takuo Gotoda, Hiroaki Itokawa | 2001-07-17 |
| 5572413 | Primary control type switching power supply circuit | — | 1996-11-05 |
| 5402480 | Call signal generating circuit | — | 1995-03-28 |
| 5260638 | Method and circuit for quick charging of secondary cell | — | 1993-11-09 |