Aspro, Inc.
33Patents
0Active
33Granted
35Portfolio score
Filing activity: Jun 13, 1974 → Nov 6, 1978
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US3977264A | Method of making poly-V pulleys and product | Emerging Cross-Sectional Technologies | 48 | Expired |
| US4050321A | Multi V-grooved pulley structure and method of making same | Emerging Cross-Sectional Technologies | 42 | Expired |
| US3994181A | Noise-dampened pulley construction | Emerging Cross-Sectional Technologies | 32 | Expired |
| US4156547A | Speed-responsive anti-skid and anti-spin system for vehicles | Emerging Cross-Sectional Technologies | 23 | Expired |
| US4023250A | Method and apparatus for making hubless V-grooved pulley and product | Emerging Cross-Sectional Technologies | 22 | Expired |
| US4059023A | One-piece sintered pulley hub construction | Emerging Cross-Sectional Technologies | 22 | Expired |
| US4055976A | Method of roller spinning cup-shaped metal blanks and roller construction therefor | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4254541A | Method of making clutch housing and pulley assembly | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4066300A | Digital traction control system | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4090284A | Method of making a sintered pulley hub construction | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4041746A | Method of making V-grooved sheet metal pulleys | Emerging Cross-Sectional Technologies | 15 | Expired |
| US3981545A | Traction control apparatus | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4141430A | Speed-responsive tag axle control system | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4056291A | Clutch housing and bearing assembly and method of making the same | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US4226320A | Centrifugal clutch construction | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US3991598A | Method of roller spinning cup-shaped metal blanks | Emerging Cross-Sectional Technologies | 11 | Expired |
| US3964346A | Limited slip differential including conical pinion and side gears | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US3961309A | High-low tire pressure signal switch | Performing Operations; Transporting | 11 | Expired |
| US3930424A | Multi-shell limited slip differential | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US4109542A | Spun V-grooved sheet metal pulley with thick hub wall integral with thin side wall | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4016642A | Method of making clutch housing and bearing assembly | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4192412A | Centrifugal clutch with shoe stops | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US3995474A | Method of making spun V-grooved sheet metal pulleys | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4282962A | Pivotal mounting assembly | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US4016963A | Centrifugal clutch construction | Emerging Cross-Sectional Technologies | 5 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.