Masao Teraoka
90Patents
18h-index
51Co-inventors
87Inventor score
Filing activity: Dec 7, 1978 → Nov 8, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4805486A | Locking differential gear assembly | Mechanical Engineering; Lighting; Heating | 108 | Expired |
| US5458547A | Differential apparatus with speed and torque sensitive differential limiting forces | Mechanical Engineering; Lighting; Heating | 70 | Expired |
| US5083986A | Coupling apparatus with double clutches | Mechanical Engineering; Lighting; Heating | 45 | Expired |
| US5904634A | Differential apparatus with additional speed increasing gear and speed decreasing gear selectively engageable with a single output shaft | Mechanical Engineering; Lighting; Heating | 39 | Expired |
| US6705964B2 | Power transmission system | Emerging Cross-Sectional Technologies | 37 | Expired |
| US5086867A | Power transmission apparatus | Mechanical Engineering; Lighting; Heating | 31 | Expired |
| US5141088A | Hub clutch device | Emerging Cross-Sectional Technologies | 31 | Expired |
| US6793603B2 | Power transmission system with sub transmission mechanism | Mechanical Engineering; Lighting; Heating | 30 | Expired |
| US4899859A | Power transmission apparatus | Mechanical Engineering; Lighting; Heating | 27 | Expired |
| US5890989A | Differential apparatus for reducing friction and noise | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US5037362A | Limited slip differential | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US6015361A | Differential apparatus with two wheel/four wheel drive switching mechanism | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US5749801A | Differential unit | Mechanical Engineering; Lighting; Heating | 22 | Expired |
| US6331103A | Fluid machine having a pair of rotors and a silencer | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US5017183A | Power transmission apparatus | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US6796412B2 | Differential apparatus | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US5709627A | Differential unit with means for mixing air into the hydraulic actuator | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US4782930A | Power transmission apparatus | Performing Operations; Transporting | 18 | Expired |
| US5361744A | Supercharging device for an internal combustion engine | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US6076623A | Four-wheel drive vehicle power train | Performing Operations; Transporting | 17 | Expired |
| US4782720A | Power transmission unit | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5398792A | Clutch device | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US6959799B2 | Actuator and intermissive power transmission device therewith | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US4735108A | Power transmission device | Emerging Cross-Sectional Technologies | 16 | Expired |
| US5535601A | Air conditioning system | Mechanical Engineering; Lighting; Heating | 15 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.