Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8137787 | Metal material having formed thereon chromium oxide passive film and method for producing the same, and parts contacting with fluid and system for supplying fluid and exhausting gas | Tadahiro Ohmi, Yasuyuki Shirai, Nobukazu Ikeda, Eiji Ideta, Akihiro Morimoto +1 more | 2012-03-20 |
| 7935385 | Metal material having formed thereon chromium oxide passive film and method for producing the same, and parts contacting with fluid and system for supplying fluid and exhausting gas | Tadahiro Ohmi, Yasuyuki Shirai, Nobukazu Ikeda, Eiji Ideta, Akihiro Morimoto +1 more | 2011-05-03 |
| 4427499 | Process for surface treatment of stainless steel sheet | Tomoge Hitomi, Takehisa Konishi, Kazuaki Hatakeyama | 1984-01-24 |