NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGY
451Patents
311Active
451Granted
54Portfolio score
Filing activity: Jun 15, 2000 → Mar 2, 2023 · 143 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6909893B2 | Wireless communication system, fixed base station and mobile terminal station | Electricity | 236 | Expired |
| US7633850B2 | Transmitter, receiver, transmitting method, receiving method, and program | Electricity | 138 | Expired |
| US6781523B2 | Road traffic monitoring system | Physics | 98 | Expired |
| US7697574B2 | Radio communication apparatus, transmitter apparatus and receiver apparatus | Electricity | 95 | Active |
| US7599672B2 | Millimeter-wave-band radio communication method in which both a modulated signal and an unmodulated carrier are transmitted to a system with a receiver having plural receiving circuits | Electricity | 88 | Expired |
| US7542894B2 | System and method for analyzing language using supervised machine learning method | Physics | 82 | Expired |
| US7130587B2 | Communication quality estimation method, communication quality estimation apparatus, and communication system | Electricity | 71 | Expired |
| US8386234B2 | Method for generating a text sentence in a target language and text sentence generating apparatus | Physics | 45 | Active |
| US7123207B2 | Ultra wideband bow-tie printed antenna | Electricity | 43 | Expired |
| US7187328B2 | Antenna device | Electricity | 34 | Expired |
| US6970655B2 | Method and circuit for generating single-sideband optical signal | Electricity | 29 | Expired |
| US7231240B2 | Psychological state assessment device, psychological state assessment method | Human Necessities | 27 | Expired |
| US7177544B1 | Photonic network packet routing method and packet router for photonic network | Electricity | 25 | Expired |
| US7603594B2 | Wireless communications system | Electricity | 23 | Expired |
| US6839039B2 | Antenna apparatus for transmitting and receiving radio waves to and from a satellite | Electricity | 20 | Expired |
| US7787476B2 | Layer 2 switch network system | Electricity | 19 | Expired |
| US8434872B2 | Multi-viewpoint floating image display device | Electricity | 18 | Active |
| US7193576B2 | Ultra wideband bow-tie slot antenna | Electricity | 17 | Expired |
| US7699466B2 | Visual training device and visual training method | Human Necessities | 17 | Expired |
| US8123370B2 | Multiple-viewing-point floating image display device | Physics | 17 | Active |
| US7054634B2 | Multi-service radio communication system | Electricity | 16 | Expired |
| US7487524B2 | Method and apparatus for presenting content of images | Electricity | 16 | Expired |
| US7756564B2 | Apparatus for measuring the neuro-magnetic field from a human brain and method for operating the same | Physics | 15 | Expired |
| US7095359B2 | Method of observing sea ice | Emerging Cross-Sectional Technologies | 15 | Expired |
| US7957652B2 | Optical FSK/SSB modulator having intensity balance function | Electricity | 14 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.