Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5134853 | Hydraulic drive system for construction machines | Toichi Hirata, Genroku Sugiyama | 1992-08-04 |
| 5062350 | Hydraulic drive system for civil engineering and construction machine | Hideaki Tanaka, Toichi Hirata, Genroku Sugiyama, Masakazu Haga | 1991-11-05 |
| 5056312 | Hydraulic drive system for construction machines | Toichi Hirata, Genroku Sugiyama, Yukio Aoyagi, Tomohiko Yasudi, Gen Yasuda +5 more | 1991-10-15 |
| 5005358 | Hydraulic drive system for crawler-mounted construction vehicle | Toichi Hirata, Hideaki Tanaka, Genroku Sugiyama | 1991-04-09 |