Panda Eng. Inc.
7Patents
0Active
7Granted
31Portfolio score
Filing activity: Jun 22, 1994 → Aug 15, 2002
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5471039A | Electronic validation machine for documents | Physics | 214 | Expired |
| US6053405A | Electronic verification machine for documents | Electricity | 186 | Expired |
| US5818019A | Electronic verification machine for validating a medium having conductive material printed thereon | Physics | 163 | Expired |
| US6491215B1 | Electronic verification machine for documents | Electricity | 109 | Expired |
| US5621200A | Electronic verification machine for validating a medium having conductive material printed thereon | Physics | 91 | Expired |
| US6776337B2 | Electronic verification machine for documents | Electricity | 44 | Expired |
| US6435408B1 | Electronic verification machine for documents | Electricity | 44 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.