SDL Inc.
🏢 View company profile →189Patents
37Active
189Granted
50Portfolio score
Filing activity: Dec 9, 1991 → Apr 12, 2024 · 3 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5566196A | Multiple core fiber laser and optical amplifier | Electricity | 319 | Expired |
| US5926493A | Optical semiconductor device with diffraction grating structure | Electricity | 248 | Expired |
| US5867305A | Optical amplifier with high energy levels systems providing high peak powers | Electricity | 235 | Expired |
| US6212310A | High power fiber gain media system achieved through power scaling via multiplexing | Electricity | 211 | Expired |
| US5689123A | III-V aresenide-nitride semiconductor materials and devices | Electricity | 140 | Expired |
| US6130147A | Methods for forming group III-V arsenide-nitride semiconductor materials | Electricity | 131 | Expired |
| US5255332A | NxN Optical crossbar switch matrix | Physics | 128 | Expired |
| US5870417A | Thermal compensators for waveguide DBR laser sources | Electricity | 121 | Expired |
| US5729641A | Optical device employing edge-coupled waveguide geometry | Physics | 112 | Expired |
| US5321718A | Frequency converted laser diode and lens system therefor | Electricity | 109 | Expired |
| US6151338A | High power laser optical amplifier system | Electricity | 105 | Expired |
| US6044096A | Packaged laser diode array system and method with reduced asymmetry | Electricity | 99 | Expired |
| US5933271A | Optical amplifiers providing high peak powers with high energy levels | Electricity | 97 | Expired |
| US6081369A | Fiber amplifiers and pumping sources for fiber amplifiers | Electricity | 95 | Expired |
| US6052397A | Laser diode device having a substantially circular light output beam and a method of forming a tapered section in a semiconductor device to provide for a reproducible mode profile of the output beam | Emerging Cross-Sectional Technologies | 89 | Expired |
| US6240116A | Laser diode array assemblies with optimized brightness conservation | Electricity | 87 | Expired |
| US5912910A | High power pumped mid-IR wavelength systems using nonlinear frequency mixing (NFM) devices | Physics | 86 | Expired |
| US5930030A | Apparatus for pumping an optical gain medium with multiple light wavelengths | Electricity | 85 | Expired |
| US5392308A | Semiconductor laser with integral spatial mode filter | Electricity | 84 | Expired |
| US5835345A | Cooler for removing heat from a heated region | Electricity | 84 | Expired |
| US5920423A | Multiple pumped fiber amplifiers for WDM communication systems with adjustment for the amplifier signal gain bandwidth | Electricity | 84 | Expired |
| US6275250A | Fiber gain medium marking system pumped or seeded by a modulated laser diode source and method of energy control | Physics | 82 | Expired |
| US6301273A | Power enhanced frequency conversion system | Physics | 80 | Expired |
| US6301271A | Frequency conversion system | Physics | 80 | Expired |
| US5761234A | High power, reliable optical fiber pumping system with high redundancy for use in lightwave communication systems | Electricity | 79 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.