Inventor
Yoshiyasu Umezu
Inventor
Hiroshima, JP
Overview
Patents· 10 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E02Fprimary
E02FDredging28%
F02DControlling combustion engines12%
B64DEquipment for fitting in or to aircraft8%
F02NStarting of combustion engines8%
H02JElectric power networks8%
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems8%
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters8%
B60KArrangement or mounting of propulsion units or of transmissions in vehicles4%
B66CCranes4%
F02PIgnition, other than compression ignition, for internal-combustion engines4%
PatentTitleYear
11,128,245Power supply system202110,985,560Power supply system20218,405,328'Slewing control device and working machine incorporated with the same'20137,818,968'Hydraulic control device of construction machine'20107,523,804'Small swing type shovel'20097,500,535'Control device for construction machine'20097,497,195'Engine control device of construction machinery'20097,191,758'Engine control device of construction machinery'20077,174,968'Hydraulic excavator'20077,001,135'Construction machine'2006Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2006–2010Patents assigned to KOBELCO CONSTR MACHINERY LTD (7)· patent assignee history
2006–2013Based in Hiroshima, JP· patent location history
2013Patents assigned to KOBELCO CONSTR MACH CO LTD (1)· patent assignee history
2013Patents assigned to KOGASHIMA MASAYUKI (1)· patent assignee history
2013Patents assigned to KOMIYAMA MASAYUKI (1)· patent assignee history
2021Patents assigned to KAWASAKI HEAVY IND LTD (2)· patent assignee history
2021Based in Kakogawa, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| KOBELCO CONSTR MACHINERY LTD | 7 | 2006–2010 |
| KAWASAKI HEAVY IND LTD | 2 | 2021 |
| KOBELCO CONSTR MACH CO LTD | 1 | 2013 |
| KOGASHIMA MASAYUKI | 1 | 2013 |
| KOMIYAMA MASAYUKI | 1 | 2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hiroshima, JP | 8 | 2006–2013 |
| Kakogawa, JP | 2 | 2021 |