×

Bio-compatible radiopaque dental fillers for imaging

  • US 9,814,791 B2
  • Filed: 07/01/2015
  • Issued: 11/14/2017
  • Est. Priority Date: 07/01/2014
  • Status: Active Grant
First Claim
Patent Images

1. A method for producing radiopaque particles comprising the steps of:

  • (a) alternating exposure of OH-rich surfaces of cellulose particles to calcium alkoxide or tungsten alkoxide solution to allow for layer-by-layer buildup of Ca—

    O and W—

    O layers on the cellulose particles to a desired thickness; and

    (b) exposing the coated cellulose particles to thermal or hydrothermal conditions to allow for the formation of crystalline calcium tungstate particles.

View all claims
  • 4 Assignments
Timeline View
Assignment View
    ×
    ×