NEC CORPORATION
35,969Patents
13,989Active
35,969Granted
54Portfolio score
Filing activity: Sep 4, 1980 → Mar 31, 2025 · 4,029 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5384028A | Biosensor with a data memory | Emerging Cross-Sectional Technologies | 620 | Expired |
| US5915027A | Digital watermarking | Electricity | 618 | Expired |
| US6631496B1 | System for personalizing, organizing and managing web information | Emerging Cross-Sectional Technologies | 611 | Expired |
| US4612083A | Process of fabricating three-dimensional semiconductor device | Emerging Cross-Sectional Technologies | 566 | Expired |
| US6955836B2 | Silicon oxide film formation method | Chemistry; Metallurgy | 561 | Expired |
| US5795774A | Biosensor | Chemistry; Metallurgy | 546 | Expired |
| US6465892B1 | Interconnect structure for stacked semiconductor device | Electricity | 533 | Expired |
| US6503826B1 | Semiconductor device and method for manufacturing the same | Emerging Cross-Sectional Technologies | 514 | Expired |
| US6898626B2 | System and method for instantly accessing a message board server | Physics | 498 | Expired |
| US5523616A | Semiconductor device having laminated tight and coarse insulating layers | Electricity | 487 | Expired |
| US5827435A | Plasma processing method and equipment used therefor | Electricity | 478 | Expired |
| US6144871A | Current detecting sensor and method of fabricating the same | Physics | 475 | Expired |
| US6245665A | Semiconductor device and method of fabricating the same | Electricity | 466 | Expired |
| US6091203A | Image display device with element driving device for matrix drive of multiple active elements | Physics | 463 | Expired |
| US5087585A | Method of stacking semiconductor substrates for fabrication of three-dimensional integrated circuit | Electricity | 455 | Expired |
| US5787458A | Content addressable memory of a simple construction capable of retrieving a variable word length data | Physics | 434 | Expired |
| US5473576A | Dynamic random access memory device with low-power consumption column selector | Physics | 421 | Expired |
| US5462899A | Chemical vapor deposition method for forming SiO.sub.2 | Electricity | 415 | Expired |
| US5986942A | Semiconductor memory device | Physics | 414 | Expired |
| US5724291A | Semiconductor memory device with reduced chip area | Physics | 413 | Expired |
| US6725227B1 | Advanced web bookmark database system | Emerging Cross-Sectional Technologies | 413 | Expired |
| US6009020A | Semiconductor memory device having dynamic data amplifier circuit capable of reducing power dissipation | Physics | 410 | Expired |
| US5241236A | Piezoelectric ceramic transformer being driven with thickness extensional vibration | Electricity | 409 | Expired |
| US7464407B2 | Attack defending system and attack defending method | Electricity | 406 | Expired |
| US6246180A | Organic el display device having an improved image quality | Physics | 405 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.