Sasktel
9Patents
0Active
9Granted
29Portfolio score
Filing activity: Dec 20, 1990 → Apr 12, 1999
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5172413A | Secure hierarchial video delivery system and method | Electricity | 916 | Expired |
| US5285272A | Video store and forward on demand apparatus and method | Electricity | 155 | Expired |
| US5570415A | Video programming and storage control using the telephone network | Electricity | 89 | Expired |
| US5904620A | Apparatus and method for playing computer games via a telecommunication network | Human Necessities | 82 | Expired |
| USRE35651E | Secure hierarchial video delivery system and method | General | 64 | Expired |
| US5548633A | Data collection network apparatus and method | Electricity | 58 | Expired |
| US6574798B1 | System and controller for control and distribution of audio and video signals | Electricity | 26 | Expired |
| US5548635A | System for controlling equipment within a telephone subscriber's premises using DTMF telephone tones | Electricity | 22 | Expired |
| USD416879S | Computer screen with an icon | General | 19 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.