Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5074194 | Hydraulic driving method of and hydraulic driving apparatus for hydraulic machine | Toichi Hirata, Hideaki Tanaka, Genroku Sugiyama, Masakazu Haga | 1991-12-24 |
| 4967557 | Control system for load-sensing hydraulic drive circuit | Eiki Izumi, Yasuo Tanaka, Hiroshi Watanabe, Toichi Hirata | 1990-11-06 |
| 4881450 | Drive control system for hydraulic machine | Toichi Hirata, Masakazu Haga, Ichiro Hirami | 1989-11-21 |
| 4729222 | Brake circuit apparatus for hydraulic motor | Hideaki Tanaka, Toichi Hirata, Genroku Sugiyama, Shinichi Mihara | 1988-03-08 |
| 4697418 | Control system for hydraulically-operated construction machinery | Nobuya Okabe, Toichi Hirata, Genroku Sugiyama, Masakazu Haga, Hideaki Tanaka +1 more | 1987-10-06 |