Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7124577 | Vehicular steering control device | Nobuhisa Honda, Shuuji Hori, Naoki Ishizaki, Hisashi Asada | 2006-10-24 |
| 6578296 | Hydraulically driven type working machine | Kenzo Kimoto, Masatake Tamaru, Masami Naruse, Jun Maruyama, Kenji Kanemaru +1 more | 2003-06-17 |
| 6481333 | Positioning device, capacity controller using positioning device, and speed changing device | Toshiyuki Akasaka, Takahiro Miyata | 2002-11-19 |
| 6324959 | Piston pump motor | Toshiyuki Akasaka, Koichi Morita | 2001-12-04 |
| 6226987 | Travel drive apparatus for hydraulic drive work vehicles and control therefor | Seita Hayashi, Hideki Kado | 2001-05-08 |
| 6209675 | Travel drive apparatus for hydraulic drive work vehicle and control method therefor | Seita Hayashi, Hideki Kado | 2001-04-03 |
| 6112521 | Backpressure control circuit for hydraulic drive device | Seita Hayashi, Hideki Kado | 2000-09-05 |
| 6068013 | Counter balance valve | Mitsuru Arai, Seita Hayashi, Hideki Kado | 2000-05-30 |
| 5946910 | Hydraulic circuit for hydraulically driven working vehicle | Seita Hayashi | 1999-09-07 |
| 5930997 | Driving device for a hydraulic motor | Seita Hayashi, Tosiyuki Akasaka | 1999-08-03 |
| 5907952 | Capacity control device for a hydraulic motor for a hydraulically driven vehicle | Tosiyuki Akasaka, Seita Hayashi | 1999-06-01 |
| 5884984 | Hydraulic braking apparatus having two safety valves | Mitsuru Arai, Seita Hayashi, Hideki Kado, Mitsuru Oshiro | 1999-03-23 |
| 5826488 | Swash plate angle changing apparatus for a piston pump/motor of swash plate type | Mitsuru Arai, Hideki Kado, Koichi Morita, Mitsuru Oshiro, Seita Hayashi | 1998-10-27 |
| 5255705 | Hydraulic pressure control system | Kazuo Uehara, Tadao Karakama, Naoki Ishizaki, Masayuki Tanaami | 1993-10-26 |
| 5253672 | Hydraulic pressure control system | Kazuo Uehara, Tadao Karakama, Naoki Ishizaki, Masayuki Tanaami | 1993-10-19 |
| 5234028 | Variable pressure control valve | Toshiro Takano, Naoki Ishizaki | 1993-08-10 |
| 5163477 | Electrohydraulic proportional control valve | Toshiro Takano, Naoki Ishizaki | 1992-11-17 |
| 5136930 | Apparatus for supplying pressure oil to hydraulic cylinders employed in working machines | Tadao Karakama, Hiroshi Endo, Naoki Ishizaki, Toshiro Takano | 1992-08-11 |
| 5076144 | Poppet valve device | Tadao Karakama, Naoki Ishizaki, Toshiro Takano | 1991-12-31 |
| 4984603 | Flow control valve assembly | Tadao Karakama, Naoki Ishizaki, Toshiro Takano | 1991-01-15 |
| 4646622 | Hydraulic control apparatus | Naoki Ishizaki, Tatsumi Tada, Kazuo Uehara, Shuki Akushicki | 1987-03-03 |