Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8087418 | Deaeration device and ultrasonic cleaning device using the same | Masaru Hase, Katsuhiro Koyama, Katsutada Sakazaki | 2012-01-03 |
| 7726325 | Deaeration device and ultrasonic cleaning device using the same | Masaru Hase, Katsuhiro Koyama, Katsutada Sakazaki | 2010-06-01 |
| 4620810 | Sound proof device of a printer | Susumu Hanyu, Hideaki Takenoya | 1986-11-04 |