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
Memory cell and memory cell array using the same
Focusing apparatus that effectively sets a focus area of an image when a focusing mode is changed
Vehicle front fender
Computer network running a distributed application
Automatic pill dispenser
Nucleotide sequence coding for variable regions of .beta. chains of human T lymphocyte receptors, corresponding peptide segments and the diagnostic and therapeutic uses
IR(voltage) drop analysis in integrated circuit timing
  Randomly Featured Patents
Electromagnetic actuator
Device for inserting and removing lighting tubes
Method for bottomless deposition of barrier layers in integrated circuit metallization schemes
Tire tread
Stacked multichip package
Locking assembly
Data retrieval using user evaluation of data presented to construct interference rules and calculate range of inputs needed for desired output and to formulate retrieval queries
Water closet
Apparatus for effecting securement of a transversely moved elastic ribbon to a moving web
Air-atomizing fuel nozzle