Inventor
Kizuku Ohtsubo
Inventor
Kawasaki, JP
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F01Lprimary
F01LCyclically operating valves for machines or engines43%
Y10TTechnical subjects covered by former us classification29%
B25BTools or bench devices not otherwise provided for, for fastening, connecting, disengaging, or holding7%
F02BInternal-combustion piston engines7%
F02DControlling combustion engines7%
F16KValves7%
PatentTitleYear
5,988,123'Method of controlling an electric valve drive device and a control system therefor'19995,983,847'Electric valve drive device in an internal combustion engine'19995,899,185'Method of increasing heat transfer of a fitted material of a cylinder head in an internal combustion engine and a fitted portion of the fitted material'19995,769,037'Hollow valve in an internal combustion engine'19985,662,076'Tappet in an internal combustion engine'19975,427,141'Pressure fluid control valve device'19955,289,623'Shim attaching/detaching tool for engine tappet'1994Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1994–1999Patents assigned to FUJI VALVE (7)· patent assignee history
1994Based in Fujisawa, JP· patent location history
1995–1999Based in Kawasaki, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| FUJI VALVE | 7 | 1994–1999 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kawasaki, JP | 6 | 1995–1999 |
| Fujisawa, JP | 1 | 1994 |