Inventor
Yukio Tomita
Inventor
Osaka, JP
Overview
Patents· 15 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C21Dprimary
C21DModifying the physical structure of ferrous metals15%
B63HMarine propulsion or steering12%
C21BManufacture of iron or steel8%
F02CGas-turbine plants8%
F23GCremation furnaces8%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests8%
B21DWorking or processing of sheet metal or metal tubes, rods or profiles without essentially removing material4%
B30BPresses in general4%
B65GTransport or storage devices, e.g. conveyors for loading or tipping, shop conveyor systems or pneumatic tube conveyors4%
C22CAlloys4%
PatentTitleYear
9,567,998'Working oil chamber sealing system of rotary vane steering gear actuator'20177,872,739'Rudder angle detecting device of steering gear'20116,886,485'Twin-rudder system for large ship'20055,820,819'Steel for chimney or gas duct, excellent in pitting resistance and rust adhesion'19985,062,905'Method of producing non-oriented magnetic steel plate having high magnetic flux density'19915,037,493'Method of producing non-oriented magnetic steel plate having high magnetic flux density and uniform magnetic properties through the thickness direction'19914,950,336'Method of producing non-oriented magnetic steel heavy plate having high magnetic flux density'19904,938,266'Method of producing steel having a low yield ratio'19904,645,065'Apparatus for feeding waste tire chips'19874,577,564'Apparatus for feeding waste tire chips'19864,400,184'System for recovering pressure and sensible heat from blast furnace gas with use of dry-type dust collector'19834,387,562'System for generating power with top pressure of blast furnaces'19834,364,257'Rotary transfer press'19824,239,379'Method and apparatus for scan-photographing a subject such as a model'19804,167,857'Marine diesel engine and ship equipped with the same'1979Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1979–1987Patents assigned to HITACHI SHIPBUILDING ENG CO (7)· patent assignee history
1979–2017Based in Osaka, JP· patent location history
1980Patents assigned to DAINIPPON SCREEN MFG (1)· patent assignee history
1983–1998Patents assigned to NIPPON STEEL CORP (6)· patent assignee history
1990–1991Based in Tokai, JP· patent location history
1998Patents assigned to MITSUBISHI HEAVY IND LTD (1)· patent assignee history
1998Based in Futtsu, JP· patent location history
2005–2017Patents assigned to JAPAN HAMWORTHY & CO LTD (3)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI SHIPBUILDING ENG CO | 7 | 1979–1987 |
| NIPPON STEEL CORP | 6 | 1983–1998 |
| JAPAN HAMWORTHY & CO LTD | 3 | 2005–2017 |
| DAINIPPON SCREEN MFG | 1 | 1980 |
| MITSUBISHI HEAVY IND LTD | 1 | 1998 |
Locations
| Location | Patents | Span |
|---|---|---|
| Osaka, JP | 10 | 1979–2017 |
| Tokai, JP | 4 | 1990–1991 |
| Futtsu, JP | 1 | 1998 |