Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5407492 | Process for forming passivated film | Tadahiro Ohmi, Yoshiyuki Nakahara, Takashi Sakanaka, Eiji Ohta | 1995-04-18 |
| 5226968 | Apparatus and method for oxidation treatment of metal | Tadahiro Ohmi, Kazuhiko Sugiyama, Fumio Nakahara | 1993-07-13 |
| 5224998 | Apparatus for oxidation treatment of metal | Tadahiro Ohmi, Kazuhiko Sugiyama, Fumio Nakahara | 1993-07-06 |