(under subclass 443) Subject matter including a mass or sheet of material (e.g., resin, etc.) with particles partially or fully embedded therein to affect the light transmission or reflection characteristics of the screen, the particles having characteristics such as a particular geometric shape, size, or refractive index.
(1) Note. The screens in Class 428, Stock Material or Miscellaneous Articles, subclasses 143+ may include particles claimed as light diffusing or as causing translucency. However, if the particles are claimed as having certain refractive index, size or shape, or an index or size relative to the remainder of the screen material, the patent is classified here in subclass 452. Further, if a geometric configuration is formed by the particles in the screen the patent is also classified here in subclass 452.
SEE OR SEARCH CLASS
427, Coating Processes,
162+, for coating processes, per se, wherein the product is an optical element.
428, Stock Material or Miscellaneous Articles,
143+, for a stock material product containing embedded particles which diffuse light, and see (1) Note above.
