Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9617715 | Construction machine | Seiji Ishida, Hidetoshi Satake, Shiro Yamaoka | 2017-04-11 |
| 9421873 | Construction machine | Seiji Ishida, Masataka Sasaki, Hidetoshi Satake, Manabu Edamura, Kazuo Fujishima +1 more | 2016-08-23 |
| 9399856 | Hydraulic working machine | Kazuo Fujishima, Mitsuo Sonoda, Masatoshi Hoshino, Akira Nakayama, Junji Yamamoto +4 more | 2016-07-26 |
| 9341198 | Hydraulic drive device for working machine | Tsuyoshi Nakamura, Kazunori Nakamura, Yasuo Okano, Kouji Ishikawa, Kensuke Sato +2 more | 2016-05-17 |
| 9249879 | Hydraulic drive system for hydraulic working machine | Kouji Ishikawa, Hidetoshi Satake, Takatoshi Ooki | 2016-02-02 |
| 9020707 | Construction machine having swing body | Shinya Imura, Seiji Ishida, Kouji Ishikawa, Hidetoshi Satake, Takatoshi Ooki +1 more | 2015-04-28 |
| 8950180 | Hybrid construction machine | Takatoshi Ooki, Hidetoshi Satake, Seiji Ishida, Shiho Izumi, Kouji Ishikawa +2 more | 2015-02-10 |
| 8924100 | Hybrid construction machine | Shinya Imura, Seiji Ishida, Hidetoshi Satake, Kazuo Fujishima, Takatoshi Ooki | 2014-12-30 |
| 8336443 | Hydraulic working machine | Toshihiro Abe, Kazunori Nakamura, Kouji Ishikawa, Hideo Karasawa | 2012-12-25 |
| 7895833 | Hydraulic drive apparatus | Kouji Ishikawa, Hideo Karasawa | 2011-03-01 |
| 7562615 | Hydraulic working machine | Toshihiro Abe, Kazunori Nakamura, Kouji Ishikawa, Hideo Karasawa | 2009-07-21 |
| 7434394 | Hydraulic drive device | Kouji Ishikawa, Kazunori Nakamura, Genroku Sugiyama, Hideo Karasawa | 2008-10-14 |
| 7127888 | Hydraulic drive unit | Kazunori Nakamura, Toichi Hirata | 2006-10-31 |
| 6898932 | Hydraulic driving unit | — | 2005-05-31 |
| 6230090 | Interference prevention system for two-piece boom type hydraulic excavator | Ei Takahashi, Kazuhiro Sunamura | 2001-05-08 |
| 5481844 | Joint part for use in wooden buildings | — | 1996-01-09 |
| 5337533 | Process for constructing a wooden building | — | 1994-08-16 |
| 5267440 | Hydraulic control system for construction machine | Kazunori Nakamura, Toichi Hirata, Genroku Sugiyama, Hiroshi Onoue, Hideaki Tanaka +3 more | 1993-12-07 |
| 5203678 | Valve apparatus and hydraulic drive system | Genroku Sugiyama, Toichi Hirata | 1993-04-20 |
| 5186000 | Hydraulic drive system for construction machines | Toichi Hirata, Genroku Sugiyama | 1993-02-16 |
| 5161575 | Direction selector valve having load-sensing function | Rindo Morikawa, Kiyoshi Oyama, Toichi Hirata, Genroku Sugiyama | 1992-11-10 |
| 5161373 | Hydraulic control valve system | Rindo Morikawa, Genroku Sugiyama | 1992-11-10 |
| 5152140 | Pressure compensating valve spool positioned by difference in pressure receiving areas for load and inlet pressures | Toichi Hirata, Hideaki Tanaka, Genroku Sugiyama, Kazunori Nakamura | 1992-10-06 |
| 5152143 | Hydraulic drive system | Toichi Hirata, Genroku Sugiyama | 1992-10-06 |
| 5150574 | Hydraulic drive system for civil engineering and construction machine | Toichi Hirata, Hideaki Tanaka, Genroku Sugiyama | 1992-09-29 |