Eiji Tajima
40Patents
14h-index
38Co-inventors
81Inventor score
Filing activity: Sep 1, 1987 → Jul 31, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5975534A | Sealing device | Mechanical Engineering; Lighting; Heating | 34 | Expired |
| US6146022A | Hub unit bearing for wheel | Mechanical Engineering; Lighting; Heating | 34 | Expired |
| US6573705B1 | Rotating speed sensor unit and wheel bearing assembly carrying the same | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US6715926B2 | Wheel bearing assembly | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US6491440B1 | Wheel bearing apparatus | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US4802776A | Print head having a wear resistant rotational fulcrum | Performing Operations; Transporting | 21 | Expired |
| US6780114B2 | Drive wheel bearing assembly | Emerging Cross-Sectional Technologies | 20 | Expired |
| US6481896B1 | Sealing device for a bearing | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US6357925B2 | Automotive wheel bearing assembly and method for manufacturing the same | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US6250814A | Automotive wheel bearing assembly and method for manufacturing the same | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US6488789B2 | Wheel bearing unit | Emerging Cross-Sectional Technologies | 16 | Expired |
| US5692590A | Slidable freewheel clutch between axle shaft and wheel | Emerging Cross-Sectional Technologies | 16 | Expired |
| US6428214B1 | Wheel bearing unit | Emerging Cross-Sectional Technologies | 14 | Expired |
| US6575637B1 | Brake rotor and wheel bearing assembly | Emerging Cross-Sectional Technologies | 14 | Expired |
| US6666303B2 | Wheel bearing assembly | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US6309110A | Wheel bearing assembly with brake rotor | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US5727317A | Method of forming an outer ring of an axle bearing | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6729769B2 | Tire wheel bearing apparatus | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US6626580B2 | Wheel bearing assembly | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US6955475B2 | Bearing apparatus for a driving wheel of vehicle | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US7011451B2 | Rotating speed sensor unit and wheel bearing assembly carrying the same | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US6892587B2 | Rotation detecting device and wheel support bearing assembly utilizing the same | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US7232374B2 | Wheel bearing device | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6739977B2 | Wheel bearing device | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6637944B2 | Tire wheel bearing apparatus | Mechanical Engineering; Lighting; Heating | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.