ECD Systems, Inc.
7Patents
0Active
7Granted
29Portfolio score
Filing activity: Apr 4, 2001 → Feb 5, 2004
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7328453B2 | Systems and methods for the prevention of unauthorized use and manipulation of digital content | Physics | 303 | Expired |
| US7237123B2 | Systems and methods for preventing unauthorized use of digital content | Physics | 80 | Expired |
| US7447907B2 | Method and system for data delivery and reproduction | Physics | 63 | Expired |
| US7565697B2 | Systems and methods for preventing unauthorized use of digital content | Physics | 14 | Expired |
| US7376073B2 | Optical storage medium having distortion regions, and a method of modifying an optical storage medium to include distortion regions | Emerging Cross-Sectional Technologies | 8 | Expired |
| US7562396B2 | Systems and methods for media authentication | Physics | 3 | Expired |
| US7643393B2 | Systems and methods for optical media modification | Physics | 1 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.