U.S. Philips Corporation
14,137Patents
3Active
14,137Granted
47Portfolio score
Filing activity: Nov 15, 1965 → Oct 19, 2009 · 3 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5744864A | Semiconductor device having a transparent switching element | Physics | 3,932 | Expired |
| US5561881A | Electric toothbrush | Human Necessities | 1,234 | Expired |
| US4931737A | Circuit for measuring the capacity of a battery | Physics | 1,025 | Expired |
| US5444478A | Image processing method and device for constructing an image from adjacent images | Electricity | 828 | Expired |
| US6216133A | Method for enabling a user to fetch a specific information item from a set of information items, and a system for carrying out such a method | Emerging Cross-Sectional Technologies | 666 | Expired |
| US5027746A | Epitaxial reactor having a wall which is protected from deposits | Chemistry; Metallurgy | 600 | Expired |
| US6234648A | Lighting system | Emerging Cross-Sectional Technologies | 583 | Expired |
| US4908707A | Video cassette recorder programming via teletext transmissions | Physics | 546 | Expired |
| US4712105A | Remote control hand apparatus for operating different modules | Electricity | 511 | Expired |
| US6250774A | Luminaire | Emerging Cross-Sectional Technologies | 500 | Expired |
| US5231381A | Data processing system with a touch screen and a digitizing tablet, both integrated in an input device | Physics | 441 | Expired |
| US6220722A | Led lamp | Emerging Cross-Sectional Technologies | 423 | Expired |
| US4502094A | Electrostatic chuck | Emerging Cross-Sectional Technologies | 413 | Expired |
| US6046792A | Differential interferometer system and lithographic step-and-scan apparatus provided with such a system | Physics | 404 | Expired |
| US6373454B1 | Active matrix electroluminescent display devices | Physics | 403 | Expired |
| US5325442A | Fingerprint sensing device and recognition system having predetermined electrode activation | Physics | 395 | Expired |
| US5828160A | Piezoelectric transducer | Electricity | 389 | Expired |
| US4100048A | Polarographic cell | Physics | 383 | Expired |
| US4754310A | High voltage semiconductor device | Electricity | 380 | Expired |
| US6487534B1 | Distributed client-server speech recognition system | Physics | 375 | Expired |
| US5402151A | Data processing system with a touch screen and a digitizing tablet, both integrated in an input device | Physics | 375 | Expired |
| US4403248A | Display device with deformable reflective medium | Physics | 368 | Expired |
| US4454594A | Method and apparatus to secure proprietary operation of computer equipment | Physics | 358 | Expired |
| US5907279A | Initialization of a wireless security system | Physics | 355 | Expired |
| US6327376A | Electronic apparatus comprising fingerprint sensing devices | Physics | 355 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.