Inventor
Hidekazu Oka
Inventor
Hiroshima, JP
Overview
Patents· 19 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E02Fprimary
E02FDredging44%
F15BSystems acting by means of fluids in general35%
F04BPositive-displacement machines for liquids6%
B60KArrangement or mounting of propulsion units or of transmissions in vehicles3%
B62DMotor vehicles3%
F16HGearing3%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein3%
Y10TTechnical subjects covered by former us classification3%
PatentTitleYear
10,280,589Hydraulic drive apparatus for construction machine20199,394,666'Construction machine with working attachment'20168,441,471'Light source device and display device including the same'20138,336,305'Hydraulic drive device and working machine with the same'20127,878,770'Hydraulic circuit of construction machine'20117,610,755'Hydraulic control apparatus of working machine'20097,594,395'Hydraulic control device for working machine'20097,513,109'Hydraulic controller for working machine'20097,499,783'Hydraulic control apparatus for hydraulic excavator'20097,284,371'Hydraulic control system for working machine'20077,178,333'Hydraulic control system for hydraulic excavator'20077,174,711'Hydraulic control system and construction machine'20077,168,246'Hydraulic control device for working machine'20077,131,453'Hydraulic valve device and method for assembling the same'20067,059,125'Hydraulic controller for construction machine'20066,837,140'Control system and method for hydraulic working machine'20056,708,490'Hydraulic system for construction machine'20046,688,102'Traveling control device'20046,655,135'Construction machine'2003Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2003–2011Patents assigned to KOBELCO CONSTR MACHINERY LTD (15)· patent assignee history
2003–2019Based in Hiroshima, JP· patent location history
2012–2019Patents assigned to KOBELCO CONSTR MACH CO LTD (3)· patent assignee history
2012–2016Patents assigned to OKA HIDEKAZU (3)· patent assignee history
2012Patents assigned to MATSUURA YUUJI (1)· patent assignee history
2012Patents assigned to NANJO TAKAO (1)· patent assignee history
2013Based in Osaka, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| KOBELCO CONSTR MACHINERY LTD | 15 | 2003–2011 |
| KOBELCO CONSTR MACH CO LTD | 3 | 2012–2019 |
| OKA HIDEKAZUself | 3 | 2012–2016 |
| MATSUURA YUUJI | 1 | 2012 |
| NANJO TAKAO | 1 | 2012 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hiroshima, JP | 18 | 2003–2019 |
| Osaka, JP | 1 | 2013 |