Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9315307 | Container closure | Takahiro Akaogi, Motokatsu Yamada, Atsushi Watanabe | 2016-04-19 |
| 4850760 | Method of finishing gears | Hiromu Okunishi | 1989-07-25 |
RT
Ryuichi Tsukamoto
Nippon Closures Co.: 1 patents #21 of 56Top 40%
Overall (All Time): #2,004,399 of 4,157,543Top 50%
2
Patents All Time