Issued Patents 2011
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8033168 | Catalyst deterioration judgment device | Kei Masuda | 2011-10-11 |
| 7922838 | Crude oil tank fabricated from steel plate | Akira Usami, Toshiei Hasegawa, Akira Shishibori | 2011-04-12 |
| 7892508 | Internal combustion engine exhaust gas purification apparatus and method for controlling same | — | 2011-02-22 |
| 7875130 | Crude oil tank comprising a corrosion resistant steel alloy | Akira Usami, Toshiei Hasegawa, Akira Shishibori | 2011-01-25 |