Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8899247 | Ultrasonic cleaning apparatus | Hiroshi Hasegawa | 2014-12-02 |
| 8652262 | Ultrasonic cleaning method for generating ultrasonic vibrations by a frequency modulated signal | Hiroshi Hasegawa, Yasuhiro Imazeki | 2014-02-18 |