Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4630772 | Insulating plate for rail insulated joint | Hiroto Yasuhara, Toru Sugiyama, Keiji Shimizu, Yoshihiro Murata | 1986-12-23 |
KW
Kainen Watanabe
Japanese National Railways: 1 patents #19 of 102Top 20%
Overall (All Time): #4,007,081 of 4,157,543Top 100%
1
Patents All Time