Hello S.A.
5Patents
0Active
5Granted
25Portfolio score
Filing activity: May 15, 1991 → Aug 27, 1992
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5278395A | Portable electronic access controlled system for parking meters or the like | Physics | 25 | Expired |
| US5239195A | MOS transistor with high threshold voltage | Electricity | 8 | Expired |
| US5173883A | Snooper device for regulated parking time-accounting system | Physics | 5 | Expired |
| US5235565A | Time-accounting system and method comprising means for the generation of codes at instants computed by a secret algorithm | Physics | 5 | Expired |
| US5241162A | Accounting system for consumable units, with optimized management, notably to account for parking time units | Physics | 3 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.