Microfield Graphics, Inc.
6Patents
0Active
6Granted
29Portfolio score
Filing activity: Aug 24, 1987 → Jul 27, 1994
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5248856A | Code-based, electromagnetic-field-responsive graphic data-acquisition system | Physics | 115 | Expired |
| US4777329A | Graphic input system | Physics | 95 | Expired |
| US5434370A | Marking system with pen-up/pen-down tracking | Physics | 62 | Expired |
| US5623129A | Code-based, electromagnetic-field-responsive graphic data-acquisition system | Physics | 27 | Expired |
| US5583323A | Calibration of graphic data-acquisition tracking system | Physics | 17 | Expired |
| US5585605A | Optical-scanning system employing laser and laser safety control | Physics | 6 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.