Inventor · Tochigi, JP

Masao Teraoka

90Patents
18h-index
51Co-inventors
87Inventor score

Filing activity: Dec 7, 1978 → Nov 8, 2021

Most-cited inventions

PatentTitleAreaCited byStatus
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.