Inventor
Yusuke Kajita
Inventor
Ushiku, JP
Overview
Patents· 29 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E02Fprimary
E02FDredging34%
F15BSystems acting by means of fluids in general26%
F02DControlling combustion engines5%
Y02TClimate change mitigation technologies related to transportation5%
B60WConjoint control of vehicle sub-units of different type or different function4%
Y10TTechnical subjects covered by former us classification4%
B60KArrangement or mounting of propulsion units or of transmissions in vehicles3%
B60LPropulsion of electrically-propelled vehicles3%
E04BGeneral building constructions3%
Y02PClimate change mitigation technologies in the production or processing of goods3%
PatentTitleYear
9,617,715'Construction machine'20179,421,873'Construction machine'20169,399,856'Hydraulic working machine'20169,341,198'Hydraulic drive device for working machine'20169,249,879'Hydraulic drive system for hydraulic working machine'20169,020,707'Construction machine having swing body'20158,950,180'Hybrid construction machine'20158,924,100'Hybrid construction machine'20148,336,443'Hydraulic working machine'20127,895,833'Hydraulic drive apparatus'20117,562,615'Hydraulic working machine'20097,434,394'Hydraulic drive device'20087,127,888'Hydraulic drive unit'20066,898,932'Hydraulic driving unit'20056,230,090'Interference prevention system for two-piece boom type hydraulic excavator'20015,481,844'Joint part for use in wooden buildings'19965,337,533'Process for constructing a wooden building'19945,267,440'Hydraulic control system for construction machine'19935,203,678'Valve apparatus and hydraulic drive system'19935,186,000'Hydraulic drive system for construction machines'19935,161,575'Direction selector valve having load-sensing function'19925,161,373'Hydraulic control valve system'19925,152,143'Hydraulic drive system'19925,152,140'Pressure compensating valve spool positioned by difference in pressure receiving areas for load and inlet pressures'19925,150,574'Hydraulic drive system for civil engineering and construction machine'19925,134,853'Hydraulic drive system for construction machines'19925,062,350'Hydraulic drive system for civil engineering and construction machine'19915,056,312'Hydraulic drive system for construction machines'19915,005,358'Hydraulic drive system for crawler-mounted construction vehicle'1991Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1991–2016Patents assigned to HITACHI CONSTRUCTION MACHINERY (24)· patent assignee history
1991–2016Based in Tsuchiura, JP· patent location history
1992Based in Ibaraki, JP· patent location history
1994–1996Based in Hokkaido, JP· patent location history
2001–2017Based in Ushiku, JP· patent location history
2009Based in Ushikui, JP· patent location history
2012–2016Patents assigned to KAJITA YUSUKE (8)· patent assignee history
2012–2016Patents assigned to ISHIKAWA KOUJI (5)· patent assignee history
2014–2016Patents assigned to ISHIDA SEIJI (5)· patent assignee history
2014–2016Patents assigned to OOKI TAKATOSHI (4)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI CONSTRUCTION MACHINERY | 24 | 1991–2016 |
| KAJITA YUSUKEself | 8 | 2012–2016 |
| ISHIDA SEIJI | 5 | 2014–2016 |
| ISHIKAWA KOUJI | 5 | 2012–2016 |
| OOKI TAKATOSHI | 4 | 2014–2016 |
Locations
| Location | Patents | Span |
|---|---|---|
| Ushiku, JP | 13 | 2001–2017 |
| Tsuchiura, JP | 12 | 1991–2016 |
| Hokkaido, JP | 2 | 1994–1996 |
| Ushikui, JP | 1 | 2009 |
| Ibaraki, JP | 1 | 1992 |