Lighting lamp
US4991074A · kind A · utility
4Cited by
3References
6Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Sep 8, 1989 |
| Grant date | Feb 5, 1991 |
| Priority date | — |
| Expiry date | Sep 8, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/35
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lighting lamp having a display sheet laminated on the surface of a bulb thereof, said display sheet comprising a support having laminated thereon a light-susceptible layer including an active layer containing at least one of a dye and a pigment capable of coloring, fading, or discoloring by the action of an active light and an adhesive layer formed on the surface of the light-susceptible layer such that the portion corresponding to at least the display portion thereof is exposed, and being laminated on the surface of the bulb by the adhesive layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.