TopRay Technologies, Inc.
10Patents
8Active
10Granted
41Portfolio score
Filing activity: May 11, 2004 → Sep 5, 2011 · 7 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7358470B2 | Optical pickup | Physics | 5 | Expired |
| US7418721B2 | Apparatus for aligning and clipping different size compact discs for disc device | Physics | 1 | Active |
| US7457062B1 | Driving apparatus for fine-tuning focus | Physics | 1 | Active |
| US7519286B2 | Apparatus of driving lens for focusing | Physics | 1 | Active |
| US7325243B2 | Driving device for objective lens of optical pickup | Physics | 0 | Expired |
| US8291442B2 | Electromagnetic actuator of optical pickup head | Physics | 0 | Active |
| US7872951B2 | Actuator for optical pickup | Physics | 0 | Active |
| US7486594B2 | Adjustable optical pickup actuator | Physics | 0 | Active |
| US7492537B2 | Focus driving apparatus with impact resistance | Physics | 0 | Active |
| US7880869B2 | Calibration apparatus and method for optical system assembly | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.