Toshiba Electric Equipment Corporation
19Patents
0Active
19Granted
32Portfolio score
Filing activity: Mar 7, 1979 → Mar 22, 1989
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4388567A | Remote lighting-control apparatus | Emerging Cross-Sectional Technologies | 227 | Expired |
| US4343033A | Marker light | Mechanical Engineering; Lighting; Heating | 30 | Expired |
| US4363083A | Screw-based incandescent lamp type fluorescent lamp | Mechanical Engineering; Lighting; Heating | 29 | Expired |
| US4392086A | Apparatus for operating a gaseous discharge lamp | Emerging Cross-Sectional Technologies | 28 | Expired |
| US4404620A | Luminaire | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US4396972A | Airport marker lighting system of inset type and method of manufacturing the same | Performing Operations; Transporting | 18 | Expired |
| US4347554A | Luminaire | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US4368504A | Task lighting apparatus | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US4992702A | Inverter capable of controlling operating frequency | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4839564A | Large image display apparatus | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4388561A | Apparatus for operating discharge lamps | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4388676A | Lighting device | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US4395659A | Power supply device | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4544999A | Marker light | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US4215292A | Apparatus for operating a gaseous discharge lamp | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4838629A | Reflector | Performing Operations; Transporting | 6 | Expired |
| US4961029A | Discharge lamp lighting device | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4429356A | Transistor inverter device | Electricity | 4 | Expired |
| US4835440A | Fluorescent lamp generating different color light beams | Electricity | 2 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.