LED light bulb system
US7597455B2 · kind B2 · utility
73Cited by
11References
7Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Oct 22, 2007 |
| Grant date | Oct 6, 2009 |
| Priority date | — |
| Expiry date | Oct 22, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/357
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An LED light bulb having separately addressable groupings of LED's. The LED light bulb can serve as a visual indicator of emergency or non-emergency conditions by selectively illuminating groupings of LED's in a variety of colors, each color corresponding to a predetermined condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.