Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6564480 | Working apparatus for construction machine | Sadahisa Tomita, Genroku Sugiyama, Ryohei Suzuki, Toshio Hasegawa, Koji Tahara | 2003-05-20 |
| 6430490 | Hydraulic circuit control device of construction machinery | Hiroshi Watanabe, Shuji Ohira, Kazuo Fujishima, Hiroshi Ogura, Sadahisa Tomita | 2002-08-06 |
| 6275757 | Device for controlling limited-area excavation with construction machine | Hiroshi Watanabe, Kazuo Fujishima | 2001-08-14 |
| 6169948 | Front control system, area setting method and control panel for construction machine | Kazuo Fujishima, Hiroshi Watanabe, Takashi Nakagawa | 2001-01-02 |
| 6076029 | Slope excavation controller of hydraulic shovel, target slope setting device and slope excavation forming method | Hiroshi Watanabe, Kazuo Fujishima | 2000-06-13 |
| 5968104 | Front control system for construction machine | Eiji Egawa, Kazuo Fujishima, Hiroshi Watanabe | 1999-10-19 |
| 5957989 | Interference preventing system for construction machine | Eiji Egawa, Hiroshi Watanabe, Hiroyuki Adachi, Junichi Hosono, Toshiaki Nishida +1 more | 1999-09-28 |
| 5960378 | Excavation area setting system for area limiting excavation control in construction machines | Hiroshi Watanabe, Toichi Hirata, Kazuo Fujishima | 1999-09-28 |
| 5918527 | Locus control system for construction machines | Hiroshi Watanabe, Kazuo Fujishima | 1999-07-06 |
| 5887365 | Front control system for construction machine and oil temperature indicator | Kazuo Fujishima, Hiroshi Watanabe, Takashi Nakagawa | 1999-03-30 |
| 5835874 | Region limiting excavation control system for construction machine | Toichi Hirata, Eiji Yamagata, Hiroshi Watanabe, Kazuo Fujishima, Hiroyuki Adachi | 1998-11-10 |
| 5822891 | Work area limitation control system for construction machine | Kazuo Fujishima, Hiroshi Watanabe | 1998-10-20 |
| 5752333 | Area limiting excavation control system for construction machines | Takashi Nakagawa, Hiroshi Watanabe, Kazuo Fujishima, Eiji Egawa | 1998-05-19 |
| 5735065 | Area limiting excavation control system for construction machine | Eiji Yamagata, Kazuo Fujishima, Hiroyuki Adachi, Hiroshi Watanabe | 1998-04-07 |
| 5701691 | Region limiting excavation control system for construction machine | Hiroshi Watanabe, Toichi Hirata, Eiji Yamagata, Kazuo Fujishima, Hiroyuki Adachi | 1997-12-30 |
| 5267440 | Hydraulic control system for construction machine | Kazunori Nakamura, Yusuke Kajita, Toichi Hirata, Genroku Sugiyama, Hiroshi Onoue +3 more | 1993-12-07 |
| 5265569 | Prime mover rotational speed control system | Masaki Egashira, Osamu Tomikawa, Touichi Hirata | 1993-11-30 |
| 5155996 | Hydraulic drive system for construction machine | Akira Tatsumi, Toichi Hirata, Eiki Izumi | 1992-10-20 |
| 5074194 | Hydraulic driving method of and hydraulic driving apparatus for hydraulic machine | Toichi Hirata, Kuniaki Yoshida, Hideaki Tanaka, Genroku Sugiyama | 1991-12-24 |
| 5062350 | Hydraulic drive system for civil engineering and construction machine | Hideaki Tanaka, Toichi Hirata, Genroku Sugiyama, Yusuke Kajita | 1991-11-05 |
| 5036817 | Engine remote control system | Osamu Tomikawa, Touichi Hirata, Akira Tatsumi, Masaki Egashira, Hiroshi Watanabe | 1991-08-06 |
| 4881450 | Drive control system for hydraulic machine | Toichi Hirata, Ichiro Hirami, Kuniaki Yoshida | 1989-11-21 |
| 4697418 | Control system for hydraulically-operated construction machinery | Nobuya Okabe, Toichi Hirata, Kuniaki Yoshida, Genroku Sugiyama, Hideaki Tanaka +1 more | 1987-10-06 |