Inventor
Yutaka Tohji
Inventor
Hiroshima, JP
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E02Fprimary
E02FDredging47%
F15BSystems acting by means of fluids in general41%
F04BPositive-displacement machines for liquids6%
F16HGearing6%
PatentTitleYear
6,430,922'Construction machine'20026,378,303'Hydraulic control device of a working machine'20026,148,548'Construction machine'20006,050,090'Control apparatus for hydraulic excavator'20005,996,341'Hydraulic control circuit in a hydraulic excavator'19995,970,709'Hydraulic control circuit in a hydraulic excavator'19995,950,430'Construction machine'19995,743,089'Hydraulic control system'1998Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1998–2002Patents assigned to KOBE STEEL LTD (6)· patent assignee history
1998–2002Based in Hiroshima, JP· patent location history
1999Patents assigned to KOBE KEIKO SHO KK (1)· patent assignee history
2002Patents assigned to KOBELCO CONSTR MACHINERY LTD (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| KOBE STEEL LTD | 6 | 1998–2002 |
| KOBE KEIKO SHO KK | 1 | 1999 |
| KOBELCO CONSTR MACHINERY LTD | 1 | 2002 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hiroshima, JP | 8 | 1998–2002 |