Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5362461 | Method for recovering calcium fluoride from fluoroetchant | Tadahiro Ohmi, Hiroyuki Harada, Toshiro Fukutome, Matagoro Maeno, Norio Terasawa +2 more | 1994-11-08 |
| 5318706 | Method of supplying dilute hydrofluoric acid and apparatus for use in this method for supplying the acid | Tadahiro Ohmi, Matagoro Maeno, Ryozi Hirayama | 1994-06-07 |