NTT MOBILE COMMUNICATIONS NETWORK, INC.
249Patents
6Active
249Granted
42Portfolio score
Filing activity: Mar 11, 1992 → Apr 9, 2009 · 6 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8185158B2 | Method and system for mobile communications | Electricity | 242 | Active |
| US5590409A | Transmission power control method and a transmission power control apparatus | Electricity | 237 | Expired |
| US5504783A | Frequency diversity transmitter and receiver | Electricity | 140 | Expired |
| US5872546A | Broadband antenna using a semicircular radiator | Electricity | 126 | Expired |
| US5537443A | Interference signal cancelling method, receiver and communication system using the same | Electricity | 125 | Expired |
| US6137788A | CDMA demodulating apparatus | Electricity | 117 | Expired |
| US5666655A | Mobile communication system with autonomous distributed type dynamic channel allocation scheme | Electricity | 114 | Expired |
| US6034952A | Method and instrument for measuring receiving SIR and transmission power controller | Electricity | 112 | Expired |
| US5812296A | Fiber optics transmission system | Electricity | 106 | Expired |
| US5838671A | Method and apparatus for call admission control in CDMA mobile communication system | Electricity | 105 | Expired |
| US5673260A | Method and system for CDMA mobile communication | Electricity | 101 | Expired |
| US5566165A | Transmission power control method and a communication system using the same | Electricity | 99 | Expired |
| US5870677A | Private mobile communication system easily connecting portable or mobile radio telephone equipment to public network | Electricity | 97 | Expired |
| US5694388A | CDMA demodulator and demodulation method | Electricity | 94 | Expired |
| US5629948A | Data transmission scheme with automatic repeat request | Electricity | 94 | Expired |
| US5574983A | Base station device and mobile station device in mobile communication system utilizing the site diversity effect in soft handover state | Emerging Cross-Sectional Technologies | 89 | Expired |
| US6624784B1 | Adaptive array antenna | Electricity | 85 | Expired |
| US5602507A | Adaptive demodulating method for generating replica and demodulator thereof | Electricity | 84 | Expired |
| US5832368A | Base station selection scheme for CDMA cellular system using perch channel and received SIR | Emerging Cross-Sectional Technologies | 84 | Expired |
| US5898665A | Coherent tracking apparatus and method for CDMA receiver | Electricity | 81 | Expired |
| US5907585A | Digital signal detecting method and detector | Electricity | 81 | Expired |
| US5638362A | Correlation detector and communication apparatus | Electricity | 78 | Expired |
| US6069912A | Diversity receiver and its control method | Electricity | 78 | Expired |
| US5910948A | Acquisition scheme and receiver for an asynchronous DS-CDMA cellular communication system | Electricity | 78 | Expired |
| US5862487A | Channel allocation for co-located systems based on interferring channel groups | Electricity | 78 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.