Inventor
Mitsuhisa Tougasaki
Inventor
Ibaraki, JP
Overview
Patents· 10 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F15Bprimary
F15BSystems acting by means of fluids in general29%
E02FDredging26%
Y10TTechnical subjects covered by former us classification23%
F04BPositive-displacement machines for liquids6%
F16KValves6%
B60YIndexing scheme relating to aspects cross-cutting vehicle technology3%
F16HGearing3%
G05GControl devices or systems insofar as characterised by mechanical features only3%
PatentTitleYear
9,494,171'Multiple valve device'20168,393,348'Directional control valve device and directional control valve device block having directional control valve devices'20137,265,304'Joystick for electro-hydraulic control system'20076,681,794'Unloading valve'20046,453,585'Hydraulic drive device of working machine'20026,438,952'Hydraulic circuit device'20026,422,009'Pump capacity control device and valve device'20026,408,876'Control valve'20026,378,302'Hydraulic circuit system'20026,327,959'Directional control valve device'2001Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2001–2016Patents assigned to HITACHI CONSTRUCTION MACHINERY (10)· patent assignee history
2001–2016Based in Ibaraki, JP· patent location history
2002Based in Niihari-gun, JP· patent location history
2007–2013Based in Tsuchiura, JP· patent location history
2013Patents assigned to TOUGASAKI MITSUHISA (1)· patent assignee history
2013Patents assigned to UENO KATSUMI (1)· patent assignee history
2016Patents assigned to HITACHI CONSTRUCTION MACH CO (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI CONSTRUCTION MACHINERY | 10 | 2001–2016 |
| HITACHI CONSTRUCTION MACH CO | 1 | 2016 |
| TOUGASAKI MITSUHISAself | 1 | 2013 |
| UENO KATSUMI | 1 | 2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Ibaraki, JP | 6 | 2001–2016 |
| Tsuchiura, JP | 2 | 2007–2013 |
| Niihari-gun, JP | 2 | 2002 |