Inventor
Shigeaki Yamanaka
Inventor
Hiroshima, JP
Overview
Patents· 19 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
Y10Tprimary
Y10TTechnical subjects covered by former us classification20%
B23PMetal-working not otherwise provided for16%
B21DWorking or processing of sheet metal or metal tubes, rods or profiles without essentially removing material13%
B21KMaking forged or pressed metal products, e.g. horse-shoes, rivets, bolts or wheels11%
B21HMaking particular metal objects by rolling, e.g. screws, wheels, rings, barrels, balls9%
F16HGearing9%
B21CManufacture of metal sheets, wire, rods, tubes, profiles or like semi-manufactured products otherwise than by rolling4%
B21JForging4%
B23KSoldering or unsoldering2%
B30BPresses in general2%
PatentTitleYear
7,360,388'Hollow stepped shaft and method of forming the same'20087,171,837'Hollow stepped shaft and method of forming the same'20077,172,059'Electromagnetic coupling'20077,134,312'Die apparatus and die exchanging method in pressing machine'20067,100,417'Lower die assembly in pressing machine'20067,015,434'Method of joining together magnetic and nonmagnetic materials'20066,959,479'Method of manufacturing a hollow shaft having a flange at one end thereof'20056,941,783'Double action oil hydraulic press'20056,662,446'Method for manufacturing a torque converter'20036,651,330'Torque converter'20036,615,476'Method of manufacturing a hollow shaft having a flange at one end thereof'20036,594,895'Torque converter'20036,474,062'Torque converter'20026,126,388'Water pump and manufacturing method thereof'20005,722,138'Apparatus for manufacturing toothed gears'19985,699,689'Method of and apparatus for forming a disc-shaped blank'19975,562,785'Method for manufacturing toothed gears'19965,310,432'Toothed wheel for use in automobiles and its manufacturing method'19945,237,745'Method of and apparatus for manufacturing drive plate'1993Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1993–2008Patents assigned to KUBOTA IRON WORKS CO LTD (18)· patent assignee history
1993–2008Based in Hiroshima, JP· patent location history
1994Patents assigned to SUMITOMO METAL IND (1)· patent assignee history
2000Patents assigned to KUBOTA IRON WORKS CC LTD (1)· patent assignee history
2002–2003Patents assigned to FUJI HEAVY IND LTD (5)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| KUBOTA IRON WORKS CO LTD | 18 | 1993–2008 |
| FUJI HEAVY IND LTD | 5 | 2002–2003 |
| KUBOTA IRON WORKS CC LTD | 1 | 2000 |
| SUMITOMO METAL IND | 1 | 1994 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hiroshima, JP | 19 | 1993–2008 |