Matsushita Electric Works, Ltd.
1,644Patents
62Active
1,644Granted
48Portfolio score
Filing activity: Dec 28, 1973 → Sep 25, 2008 · 62 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6093146A | Physiological monitoring | Emerging Cross-Sectional Technologies | 742 | Expired |
| US6085238A | Virtual LAN system | Electricity | 703 | Expired |
| US6183426A | Ultrasonic wave applying apparatus | Human Necessities | 491 | Expired |
| US6105317A | Mounting system for installing an array of solar battery modules of a panel-like configuration on a roof | Emerging Cross-Sectional Technologies | 417 | Expired |
| US6144993A | Building automation system using common platform program and common function package for controlling facility loads and monitoring terminals | Electricity | 254 | Expired |
| US4599598A | Data transmission system utilizing power line | Electricity | 249 | Expired |
| US7246044B2 | Method for aiding space design using network, system therefor, and server computer of the system | Physics | 237 | Expired |
| US5350977A | Luminaire of variable color temperature for obtaining a blend color light of a desired color temperature from different emission-color light sources | Emerging Cross-Sectional Technologies | 233 | Expired |
| USD489183S1 | Electronic toothbrush body | General | 209 | Expired |
| US7514818B2 | Power supply system | Electricity | 199 | Active |
| US4625152A | Tricolor fluorescent lamp | Emerging Cross-Sectional Technologies | 197 | Expired |
| US4747786A | Coaxial cable connector | Electricity | 194 | Expired |
| US7321707B2 | Electromagnetic wave frequency filter | Physics | 191 | Expired |
| US5024650A | Stress dissolving refreshment system | Human Necessities | 189 | Expired |
| US4679077A | Visual Image sensor system | Emerging Cross-Sectional Technologies | 188 | Expired |
| US4203431A | Facial treatment device | Human Necessities | 183 | Expired |
| USD548334S1 | Oral irrigator | General | 183 | Expired |
| US7035719B2 | Tone generating electronic device with paging module for verification of energy curtailment | Emerging Cross-Sectional Technologies | 175 | Expired |
| US4365376A | Mouth cleaning device | Human Necessities | 174 | Expired |
| USD373419S | Sphygmomanometer | General | 167 | Expired |
| US5054103A | Picture encoding system | Electricity | 167 | Expired |
| US6874910B2 | Light source device using LED, and method of producing same | Emerging Cross-Sectional Technologies | 167 | Expired |
| USD413975S | Oral cavity cleaner | General | 163 | Expired |
| USD373631S | Oral cavity cleaner | General | 158 | Expired |
| US4737847A | Abnormality supervising system | Emerging Cross-Sectional Technologies | 154 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.