Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6666973 | Method for fixing fluorine and phosphorus in waste water containing fluorophosphoric acid-derived compound to remove them | Hirohisa Kikuyama, Toshirou Fukudome | 2003-12-23 |
| 6585910 | Etchant | Hirohisa Kikuyama, Tatsuhiro Yabune, Tadahiro Ohmi | 2003-07-01 |