Issued Patents 2025
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12392301 | Piston unit, top land member, and combination of piston unit parts | Hiroyuki Nagakura, Shuichi Inamori | 2025-08-19 |
| 12305590 | Spiny liner and manufacturing method of same, and method of determining bonding strength | Akira Sato, Takashi Sato | 2025-05-20 |