Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8733385 | Cleaner for inside of water tank | Yutaka Yoshida | 2014-05-27 |
| 8524077 | Shower tube cleaning device for filter for water tank | — | 2013-09-03 |
| 7273547 | External type filtration device | — | 2007-09-25 |
| 6499432 | Cleaner for inside of water tank | — | 2002-12-31 |
| 4869835 | Ion source | Akio Okamoto, Shigeo Fukui, Tsutomu Ueno | 1989-09-26 |