Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12252794 | Method for controlling hydrogen generation system, and hydrogen generation system | Koji Matsuoka, Hirofumi TAKAMI, Yasushi Sato, Hirokazu Kojima, Naoya Itou +2 more | 2025-03-18 |
| 7586759 | Power source apparatus | Kimihiro Nishijima | 2009-09-08 |
| 6108216 | Non-contact electrical power transmission system | Hideaki Abe, Hiroshi Sakamoto | 2000-08-22 |
| 5099406 | DC-DC converter with surge voltage prevention | Hiroshi Sakamoto | 1992-03-24 |
| 5063488 | Switching power source means | Hiroshi Sakamoto | 1991-11-05 |
| 5027263 | Switching power source means | Hiroshi Sakamoto | 1991-06-25 |
| 5019770 | Switching power source device having energy recovery | Hiroshi Sakamoto, Takazi Nakamizo | 1991-05-28 |
| 4893069 | Ferroresonant three-phase constant AC voltage transformer arrangement with compensation for unbalanced loads | Akihiko Katsuki, Fukutoshi Tominaga | 1990-01-09 |
| 4786854 | Alternating current voltage regulator using a feedback loop with step filtering | Takazi Nakamizo, Cheng Chen | 1988-11-22 |
| 4642549 | Ferroresonant constant AC voltage regulator | Katsuaki Murata, Takazi Nakamizo | 1987-02-10 |
| 4626983 | Power conversion device for solar cell | Katsuaki Murata, Takazi Nakamizo | 1986-12-02 |
| 4556802 | Uninterruptible ac power supply | Katsuaki Murata, Takazi Nakamizo | 1985-12-03 |