Patents Examined by Christopher G. Paulraj
  • Laser-markable paper and board products
    Patent number: 6306493
    Abstract: There is provided laser-markable paper and board products which include micronized polymers comprising of linear aromatic polyesters and/or of linear polyarylenes having a particle size of from 0.1 to 100 &mgr;m as absorber material and material for carbonization.
    Type: Grant
    Filed: July 30, 1998
    Date of Patent: October 23, 2001
    Assignee: Merck Patent Gesellschaft
    Inventor: Alexandra Brownfield