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Phosphorescent marking material

  • US 5,116,533 A
  • Filed: 06/11/1991
  • Issued: 05/26/1992
  • Est. Priority Date: 04/05/1990
  • Status: Expired due to Term
First Claim
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1. A phosphorescent marking material comprising a wax base vehicle, filler particles, and phosphorescent particles, said phosphorescent particles being suspended in a mixture of said wax base vehicle and said filler particles, said mixture comprising a range of 10 percent to 30 percent by weight of said filler particles and a range of 10 to 50 percent by weight of said phosphorescent particles, said phosphorescent particles having a particle size in the size range of 5 to 20 microns, said filler particles being at least partially transparent to actimic radiation.

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