Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6451757 | Chelating agent and detergent comprising the same | Hiroshi Yamamoto, Yasuyuki Takayanagi, Teturo Nakahama | 2002-09-17 |
| 6426229 | Chelating agent and detergent comprising the same | Hiroshi Yamamoto, Yasuyuki Takayanagi, Teturo Nakahama | 2002-07-30 |