Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10030772 | Multi-piece oil ring | Kazuhiro Fujimura, Iwao Hiraishi, Makoto Kajiwara | 2018-07-24 |
| 10001131 | Water pump | Kazuma Sasanami, Kenichi Komai | 2018-06-19 |
AC
Atsushi Chiba
Nippon Piston Ring Co.: 1 patents #3 of 10Top 30%
Overall (2018): #165,189 of 503,207Top 35%
2
Patents 2018