JDS Fitel Inc.
81Patents
0Active
81Granted
36Portfolio score
Filing activity: Nov 26, 1991 → Dec 14, 2001
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6167185A | Adjustable optical attenuator | Physics | 1,005 | Expired |
| US6519065B1 | Chromatic dispersion compensation device | Electricity | 157 | Expired |
| US5798859A | Method and device for wavelength locking | Electricity | 130 | Expired |
| US5790314A | Grin lensed optical device | Physics | 105 | Expired |
| US5471340A | Reflective optical non-reciprocal devices | Physics | 97 | Expired |
| US5706375A | Variable-attenuation tunable optical router | Electricity | 96 | Expired |
| US5745634A | Voltage controlled attenuator | Physics | 87 | Expired |
| US6154586A | Optical switch mechanism | Physics | 84 | Expired |
| US5745626A | Method for and encapsulation of an optical fiber | Physics | 83 | Expired |
| US5608825A | Multi-wavelength filtering device using optical fiber Bragg grating | Electricity | 82 | Expired |
| US5574596A | Optical circulator | Physics | 58 | Expired |
| US5283845A | Multi-port tunable fiber-optic filter | Physics | 57 | Expired |
| US6393180B1 | Providing a refractive index change in an ion diffused material | Physics | 54 | Expired |
| US5629995A | Wavelength filter arrangements for use in fiber optics | Physics | 50 | Expired |
| US5808763A | Optical demultiplexor | Physics | 49 | Expired |
| US5768005A | Multi-stage optical isolator | Physics | 47 | Expired |
| US5612824A | Narrow band filter and method of making same | Physics | 43 | Expired |
| US5594820A | Opto-mechanical device having optical element movable by twin flexures | Physics | 42 | Expired |
| US5799121A | Multi-port optical device | Physics | 40 | Expired |
| US6262822A | Circuit for monitoring optical signals | Electricity | 40 | Expired |
| US5926317A | Multilayer thin film dielectric bandpass filter | Emerging Cross-Sectional Technologies | 39 | Expired |
| US5481402A | Tunable optical filter | Physics | 38 | Expired |
| US5615289A | Bandpass optical filter | Physics | 37 | Expired |
| US5588078A | Non-reciprocal optical waveguide coupling device | Emerging Cross-Sectional Technologies | 37 | Expired |
| US5557468A | Chromatic dispersion compensation device | Physics | 36 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.