Issued Patents All Time
Showing 1–2 of 2 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, Minoru Hirahara, Seiji Miyoshi | 2013-09-24 |
| 7958378 | Power supply device having load detection function and communication apparatus provided with the power supply device | Yoshito Koyama, Seiji Miyoshi | 2011-06-07 |