Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9885995 | Aluminum alloy and process for producing aluminum alloy extrusions | Yoshimasa Ohashi, Koji Hisayuki, Yoshikazu Kato, Kazunori Sakayori, Ryouta Kimura | 2018-02-06 |
| 9636727 | Device for drawing tubular workpiece | Koji Hisayuki, Masaaki Oide | 2017-05-02 |