NEC Research Institute, Inc.
130Patents
0Active
130Granted
43Portfolio score
Filing activity: Sep 12, 1990 → May 14, 2001
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5930369A | Secure spread spectrum watermarking for multimedia data | Electricity | 666 | Expired |
| US5915027A | Digital watermarking | Electricity | 618 | Expired |
| US5848155A | Spread spectrum watermark for embedded signalling | Electricity | 442 | Expired |
| US5692193A | Software architecture for control of highly parallel computer systems | Physics | 296 | Expired |
| US6069914A | Watermarking of image data using MPEG/JPEG coefficients | Electricity | 262 | Expired |
| US6154571A | Robust digital watermarking | Electricity | 250 | Expired |
| US6289342A | Autonomous citation indexing and literature browsing using citation context | Emerging Cross-Sectional Technologies | 245 | Expired |
| US5359362A | Videoconference system using a virtual camera image | Electricity | 240 | Expired |
| US6208735A | Secure spread spectrum watermarking for multimedia data | Physics | 214 | Expired |
| US5363305A | Navigation system for a mobile robot | Physics | 208 | Expired |
| US6038337A | Method and apparatus for object recognition | Physics | 160 | Expired |
| US5745703A | Transmission of higher-order objects across a network of heterogeneous machines | Physics | 158 | Expired |
| US6496871B1 | Distributed agent software system and method having enhanced process mobility and communication in a computer network | Physics | 148 | Expired |
| US6040936A | Optical transmission control apparatus utilizing metal films perforated with subwavelength-diameter holes | Physics | 140 | Expired |
| US5973316A | Sub-wavelength aperture arrays with enhanced light transmission | Performing Operations; Transporting | 137 | Expired |
| US5696964A | Multimedia database retrieval system which maintains a posterior probability distribution that each item in the database is a target of a search | Emerging Cross-Sectional Technologies | 132 | Expired |
| US6278792A | Robust digital watermarking | Electricity | 129 | Expired |
| US6311260A | Method for perfetching structured data | Physics | 115 | Expired |
| US6139626A | Three-dimensionally patterned materials and methods for manufacturing same using nanocrystals | Emerging Cross-Sectional Technologies | 112 | Expired |
| US5448567A | Control architecture for ATM networks | Electricity | 106 | Expired |
| US5706497A | Document retrieval using fuzzy-logic inference | Emerging Cross-Sectional Technologies | 105 | Expired |
| US6052238A | Near-field scanning optical microscope having a sub-wavelength aperture array for enhanced light transmission | Performing Operations; Transporting | 101 | Expired |
| US6285020A | Enhanced optical transmission apparatus with improved inter-surface coupling | Physics | 101 | Expired |
| US6236033A | Enhanced optical transmission apparatus utilizing metal films having apertures and periodic surface topography | Performing Operations; Transporting | 100 | Expired |
| US6441298B1 | Surface-plasmon enhanced photovoltaic device | Emerging Cross-Sectional Technologies | 97 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.