Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8464576 | Engine oil degradation-estimating device and device for estimating antioxidant performance of engine oil | Yosuke Okuyama, Masashi Maruyama, Koichiro Aikawa | 2013-06-18 |