Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Fluorescent lamp with second phosphor layer










Image Number 2 for United States Patent #4070598.

A fluorescent lamp having a phosphor layer for converting radiation at a first non-visible wavelength to radiation in the visible spectrum, includes a second phosphor layer for converting other non-visible radiation, having a deleterious effect (depreciation) on the first phosphor layer, to wavelengths in the region containing the first wavelength for subsequent conversion to visible light, thus increasing the brightness of the fluorescent lamp simultaneous with minimization of early depreciation of lamp brightness.








 
 
  Recently Added Patents
Random access for wireless multiple-access communication systems
Watch chain
Ascertaining presentation format based on device primary control determination
Manufacturing method for semiconductor device carrier and semiconductor package using the same
EpCAM as a reprogramming factor for non-pluripotent cells
Scattering spectroscopy employing hotspot-aligned nanopores
Live-attenuated compositions for bacterial infections
  Randomly Featured Patents
Method and apparatus for calibrating moisture sensors
Fabrication of a gate electrode stack using a patterned oxide layer
Cutting pen
Optical cable testing
Methods and apparatus for polishing a semiconductor wafer
Cable connector assembly having strain relief member for cable
RMS-DC converter having gain stages with variable weighting coefficients
Liquid cargo transport ship having double-hull structure
Auto-venting for polyurethane foam
Plastid transformation of Brassica