NTN Toyo Bearing Co., Ltd.
65Patents
0Active
65Granted
38Portfolio score
Filing activity: Jun 23, 1975 → Aug 15, 1989
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4901831A | Clutch | Mechanical Engineering; Lighting; Heating | 60 | Expired |
| US4686404A | Controlled radial magnetic bearing device | Emerging Cross-Sectional Technologies | 39 | Expired |
| US4940447A | Autotensioner for adjusting the tension of a timing belt | Mechanical Engineering; Lighting; Heating | 37 | Expired |
| US4696581A | Rolling bearing | Mechanical Engineering; Lighting; Heating | 31 | Expired |
| US4733979A | Thrust roller bearing assembly | Mechanical Engineering; Lighting; Heating | 29 | Expired |
| US4786270A | Homokinetic tripod joint | Emerging Cross-Sectional Technologies | 29 | Expired |
| US4904230A | Belt autotensioner | Mechanical Engineering; Lighting; Heating | 28 | Expired |
| US4747803A | Tripod homokinetic universal joint with cylindrical rollers and a flat roller guide | Emerging Cross-Sectional Technologies | 26 | Expired |
| US4840740A | Grease for homokinetic joint | Chemistry; Metallurgy | 26 | Expired |
| US4852707A | Reversible self-locking clutch | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US4950209A | Autotensioner | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US4281797A | Fuel injection device for internal combustion engines | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US4893387A | Roller elements for roller bearing | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4989705A | Rotary member with one-way clutch | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US4863417A | Auto-tensioner for belt | Mechanical Engineering; Lighting; Heating | 22 | Expired |
| US4773890A | Slidable-type homokinetic (universal) tripod joint | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4236619A | One-way clutch | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US4865468A | Wheel bearing assembly for automotive wheel | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US4684356A | Roller bearing assemblies for a homokinetic universal joint | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US4319465A | Constant velocity joint | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4969753A | Wheel bearing assembly for automotive wheel | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US4314524A | Apparatus for transfer and treatment of apertured articles | Performing Operations; Transporting | 14 | Expired |
| US4725153A | Thrust roller bearing assembly | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US4504099A | Drive-axle bearing device for automobiles | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US4916750A | Sealed double row spherical roller bearing | Mechanical Engineering; Lighting; Heating | 13 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.