Carroll Touch, Inc.
14Patents
0Active
14Granted
32Portfolio score
Filing activity: Jun 18, 1984 → Dec 1, 1994
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4672364A | Touch input device having power profiling | Physics | 210 | Expired |
| US4988983A | Touch entry system with ambient compensation and programmable amplification | Physics | 98 | Expired |
| US5451723A | Acoustic wave touch panel for use with a non-active stylus | Emerging Cross-Sectional Technologies | 78 | Expired |
| US5055840A | Infrared touch input device and light emitted activation circuit | Physics | 71 | Expired |
| US5334805A | Controller for an acoustic wave touch panel | Emerging Cross-Sectional Technologies | 70 | Expired |
| US4684801A | Signal preconditioning for touch entry device | Electricity | 65 | Expired |
| US4943806A | Touch input device having digital ambient light sampling | Physics | 60 | Expired |
| US5329070A | Touch panel for an acoustic touch position sensor | Emerging Cross-Sectional Technologies | 55 | Expired |
| US4761637A | Touch input device | Physics | 51 | Expired |
| US4645920A | Early fault detection in an opto-matrix touch input device | Physics | 49 | Expired |
| US4713534A | Phototransistor apparatus with current injection ambient compensation | Electricity | 39 | Expired |
| US4818859A | Low profile opto-device assembly with specific optoelectronic lead mount | Electricity | 24 | Expired |
| US5041701A | Edge linearization device for a contact input system | Physics | 21 | Expired |
| US5380959A | Controller for an acoustic touch panel | Physics | 19 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.