Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7922838 | Crude oil tank fabricated from steel plate | Akira Usami, Kenji Katoh, Akira Shishibori | 2011-04-12 |
| 7875130 | Crude oil tank comprising a corrosion resistant steel alloy | Akira Usami, Kenji Katoh, Akira Shishibori | 2011-01-25 |