Xtellus, Inc.
14Patents
1Active
14Granted
34Portfolio score
Filing activity: Apr 12, 2002 → Mar 14, 2008 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6943768B2 | Thermal control system for liquid crystal cell | Physics | 166 | Expired |
| US7035484B2 | Tunable optical filter | Physics | 67 | Expired |
| US7468840B2 | Wavelength selective optical switch | Electricity | 23 | Expired |
| US7221429B1 | Wavelength locker with liquid crystal tunable filter generating transmitted and reflected outputs | Physics | 14 | Expired |
| US7009680B2 | Narrow band tunable filter with integrated detector | Physics | 9 | Expired |
| US7046326B2 | Multi-pixel liquid crystal cell array | Physics | 9 | Expired |
| US7558447B2 | Single-pole optical wavelength selector | Physics | 8 | Expired |
| US7039259B2 | Fiber optical gain equalizer | Electricity | 8 | Expired |
| US7454100B2 | Single-pole optical wavelength selector | Physics | 6 | Expired |
| US7352428B2 | Liquid crystal cell platform | Physics | 4 | Expired |
| US7355671B2 | Fabrication method for liquid crystal cell | Physics | 3 | Expired |
| US7010211B2 | Fiber optical attenuator | Physics | 3 | Expired |
| US7574073B2 | Optical devices with integral isolators | Physics | 2 | Active |
| US7435939B2 | Dynamic optical phase shifter compensator | Physics | 2 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.