Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8007575 | Air filtering apparatus having mechanism for detecting water exchange timing | — | 2011-08-30 |
| 7914650 | Air filtering apparatus | Masanori Kobayashi | 2011-03-29 |
| 7850768 | Air filtering apparatus having scale removal detecting mechanism | — | 2010-12-14 |