Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12403526 | Crankshaft and method of manufacturing forged material for crankshaft | Manabu Kubota | 2025-09-02 |
| 12049102 | Railway wheel | Manabu Kubota | 2024-07-30 |
| 11890894 | Railway wheel | Manabu Kubota | 2024-02-06 |
| 11761053 | Method for producing railway wheel and railway wheel | Manabu Kubota | 2023-09-19 |
| 11458762 | Railway wheel | Manabu Kubota | 2022-10-04 |
| 9239075 | Forged crankshaft | Kisung Kim, Hiroaki Tahira | 2016-01-19 |