Issued Patents All Time
Showing 76–91 of 91 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5062350 | Hydraulic drive system for civil engineering and construction machine | Hideaki Tanaka, Genroku Sugiyama, Masakazu Haga, Yusuke Kajita | 1991-11-05 |
| 5056312 | Hydraulic drive system for construction machines | Genroku Sugiyama, Yusuke Kajita, Yukio Aoyagi, Tomohiko Yasudi, Gen Yasuda +5 more | 1991-10-15 |
| 5048296 | Anti-vibration apparatus in a hydraulic system for boom cylinder of working apparatus | Kazuhiro Sunamura, Osamu Tomikawa | 1991-09-17 |
| 5005358 | Hydraulic drive system for crawler-mounted construction vehicle | Hideaki Tanaka, Genroku Sugiyama, Yusuke Kajita | 1991-04-09 |
| 4967557 | Control system for load-sensing hydraulic drive circuit | Eiki Izumi, Yasuo Tanaka, Hiroshi Watanabe, Kuniaki Yoshida | 1990-11-06 |
| 4955344 | Apparatus for controlling rotational speed of prime mover of construction machine | Akira Tatsumi, Masaki Egashira, Osamu Tomikawa, Hiroshi Watanabe | 1990-09-11 |
| 4945723 | Flow control valves for hydraulic motor system | Eiki Izumi, Yusaku Nozawa, Masahiko Shimotori | 1990-08-07 |
| 4938022 | Flow control system for hydraulic motors | Yusaku Nozawa | 1990-07-03 |
| 4881450 | Drive control system for hydraulic machine | Masakazu Haga, Ichiro Hirami, Kuniaki Yoshida | 1989-11-21 |
| 4875337 | Construction machine dual-dump hydraulic circuit with piloted arm-boom cylinder supply priority switching valves | Genroku Sugiyama, Shinichi Satoh | 1989-10-24 |
| 4858649 | Valve apparatus | Shinichi Satoh, Genroku Sugiyama, Hideaki Tanaka | 1989-08-22 |
| 4832082 | Hydraulic pilot operated directional control valve | Hideaki Tanaka, Genroku Sugiyama, Shinichi Satoh | 1989-05-23 |
| 4753158 | Pilot hydraulic system for operating directional control valve | Genroku Sugiyama, Shinichi Satoh | 1988-06-28 |
| 4729222 | Brake circuit apparatus for hydraulic motor | Hideaki Tanaka, Genroku Sugiyama, Kuniaki Yoshida, Shinichi Mihara | 1988-03-08 |
| 4697418 | Control system for hydraulically-operated construction machinery | Nobuya Okabe, Kuniaki Yoshida, Genroku Sugiyama, Masakazu Haga, Hideaki Tanaka +1 more | 1987-10-06 |
| 4614475 | Hydraulic circuit system for civil engineering and architectural machinery | Seiji Tamura, Toshimichi Ikeda | 1986-09-30 |