Issued Patents 2017
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9840948 | Method for supplying inert gas into poppet valve intermediate and apparatus for supplying inert gas into poppet valve intermediate | Hisanaga Yokoyama | 2017-12-12 |
| 9751164 | Method of manufacturing a hollow poppet valve | Kazuhiro Ishii, Masahiro Meguro | 2017-09-05 |
| 9676015 | Composite rolling mill roll and rolling method | Tsuyoshi Inoue, Seiji Ito | 2017-06-13 |