David Freeman
15Patents
7h-index
21Co-inventors
66Inventor score
Filing activity: May 6, 1975 → Dec 1, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6450407B1 | Chip card rebate system | Physics | 596 | Expired |
| US5931764A | Wearable device with flexible display | Emerging Cross-Sectional Technologies | 377 | Expired |
| US6019284A | Flexible chip card with display | Physics | 368 | Expired |
| US6068183A | Chip card system | Physics | 261 | Expired |
| US6402039B1 | Flexible chip card with display | Physics | 201 | Expired |
| US7229385B2 | Wearable device | Emerging Cross-Sectional Technologies | 183 | Expired |
| US7854684B1 | Wearable device | Emerging Cross-Sectional Technologies | 16 | Active |
| US3992078A | Lens structure | Physics | 5 | Expired |
| US4985143A | Method for packing chromatographic beds | Physics | 5 | Expired |
| US10035078B2 | Separation method | Emerging Cross-Sectional Technologies | 1 | Active |
| USD1005932S1 | Tire | General | 0 | Active |
| US11558296B2 | Transaction analyzer for peripheral bus traffic | Physics | 0 | Active |
| US10513179B2 | Adjustable PTO mounting devices and methods | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US11431691B2 | Systems and methods for blockchain-based secure storage | Electricity | 0 | Active |
| US11882038B2 | Transaction analyzer for communication bus traffic | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.