Preview Systems
🏢 View company profile →8Patents
0Active
8Granted
31Portfolio score
Filing activity: Mar 24, 1997 → Apr 6, 1998
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6009401A | Relicensing of electronically purchased software | Physics | 330 | Expired |
| US6285985A | Advertising-subsidized and advertising-enabled software | Physics | 207 | Expired |
| US6009525A | Multi-tier electronic software distribution | Physics | 205 | Expired |
| US6189097A | Digital Certificate | Electricity | 127 | Expired |
| US6272636A | Digital product execution control and security | Physics | 115 | Expired |
| US6055503A | Software program self-modification | Physics | 89 | Expired |
| US6073256A | Digital product execution control | Physics | 88 | Expired |
| US6334213A | Merging of separate executable computer programs to form a single executable computer program | Physics | 76 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.