Patent ID: 8765856

Claim:
A method of manufacturing a lead-free, non-toxic radiation shielding device, said method comprising: combining a liquid thermosetting polymer, at least one heavy particulate filler, and at least one light particulate filler to form a lead-free, non-toxic composite material, wherein said at least one heavy particulate filler is selected from a group consisting of tungsten, osmium, iridium, platinum, gold, molybdenum, tantalum, and combinations thereof, said at least one heavy particulate filler having an average particle size between 0.1 micron and 15 microns, and further wherein said at least one light particulate filler is selected from the group consisting of barium sulfate, bismuth, iodine, zirconium oxide, nickel, copper, silver, titanium, titanium oxide, zinc oxide, zinc sulfide, antimony oxide, aluminum, and combinations thereof, said at least one light particulate filler having an average particle size between 0.5 micron and 15 microns; and casting said lead-free, non-toxic composite material to form a lead-free, non-toxic radiation shielding device.