NTT Electronics Corporation
169Patents
135Active
169Granted
56Portfolio score
Filing activity: Nov 12, 1997 → Oct 1, 2021 · 43 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6160544A | Digital video distribution system | Electricity | 115 | Expired |
| US6304687A | Optical waveguide circuit, its manufacturing method and optical waveguide module having the optical waveguide circuit | Physics | 44 | Expired |
| US6229165A | Semiconductor device | Electricity | 39 | Expired |
| US7868701B2 | Transimpedance amplifier | Electricity | 14 | Active |
| US6476919B1 | Polarization-independent reflectometry and polarization-independent reflectometer | Physics | 14 | Expired |
| US9020307B2 | Optical waveguide device and module | Physics | 14 | Active |
| US9020361B2 | Optical signal transmitter, and bias voltage control method | Electricity | 12 | Active |
| US8094692B2 | Modulation method, modulation program, recording medium, modulation device, and optical transmitter | Electricity | 10 | Active |
| US7261471B2 | Optical connector having shielding mechanism | Physics | 9 | Expired |
| US9229179B2 | Integrated optoelectronic module | Physics | 9 | Active |
| US7054403B2 | Phase-Locked Loop | Electricity | 8 | Expired |
| US7557387B2 | Avalanche photodiode | Electricity | 7 | Expired |
| US7413355B2 | Light emitting module and single-fiber two-way optical communication module | Physics | 7 | Active |
| US8135285B2 | Optical transmission system and method | Electricity | 6 | Active |
| US6107879A | Automatic dynamic range control circuit | Electricity | 5 | Expired |
| US10090921B2 | Light modulation device and light modulation method | Electricity | 5 | Active |
| US7599587B2 | Wavelength selective switch | Physics | 5 | Active |
| US6842560B2 | Optical multiplexing circuit and optical multiplexer | Electricity | 5 | Expired |
| US8625943B2 | Waveguide device and module | Physics | 5 | Active |
| US6904204B2 | Array waveguide diffraction grating type optical multiplexer/demultiplexer | Physics | 4 | Expired |
| US8764313B2 | Optical connector plug | Physics | 4 | Active |
| US7045379B2 | Method of manufacturing surface shape recognition sensor | Physics | 4 | Expired |
| US6678290B2 | Optical output control circuit for obtaining stable optical output power | Electricity | 4 | Expired |
| US7995930B2 | Optical receiver using Mach-Zehnder interferometer | Physics | 4 | Active |
| US8575650B2 | Avalanche photodiode | Electricity | 4 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.