Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Zinc silicate phosphor particles and method for making them










Image Number 2 for United States Patent #4440831.

Improved zinc silicate phosphor particles are made by using silicic acid particles in the range from 0.7 to 10 micrometers coated with Mn.sub.2 O.sub.3 .multidot.xH.sub.2 O and then a layer of ZnO particles about an order of magnitude smaller which are fired to form the phosphors. The particle size is held within the range preferred and preferably is even narrower. The particles are not milled or mechanically crushed. Instead, the ZnO powder prevents agglomeration during firing. Baths are provided for formation of the particles prior to firing. Brightness and persistance are improved over conventional phosphors.








 
 
  Recently Added Patents
Display module
Multicolored light converting LED with minimal absorption
Implicit certificate scheme
Modulation of TIM receptor activity in combination with cytoreductive therapy
Owner-brokered knowledge sharing machine
Non-transitory computer readable recording medium storing print management program, print management device, print management method, and print system
Television receiver
  Randomly Featured Patents
Circuitry for eliminating double ram row addressing
Suction pipe
Pulse forming converter
Polycarbonate with high refractive index
Full grip cookware handle
Natural feeling condom and method
Method of treating extensible hydrocarbon articles
Conveyor belt
Laptop computer case
Television titling apparatus and method