Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6638361 | Method for cleaning filters | Shingo Hatanaka | 2003-10-28 |
| 6394113 | Method and apparatus for cleaning filters | Shingo Hatanaka | 2002-05-28 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6638361 | Method for cleaning filters | Shingo Hatanaka | 2003-10-28 |
| 6394113 | Method and apparatus for cleaning filters | Shingo Hatanaka | 2002-05-28 |