Proofspace, Inc.
2Patents
0Active
2Granted
29Portfolio score
Filing activity: Sep 22, 1998 → Apr 26, 2001
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7017046B2 | System and method for graphical indicia for the certification of records | Electricity | 134 | Expired |
| US6381696B1 | Method and system for transient key digital time stamps | Physics | 63 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.