Patents Assigned to Rona/EMI Industries, Inc.
  • Methods and compositions related to laser sensitive pigments for laser marking of plastics
    Patent number: 6706785
    Abstract: Platelet-shaped substrates that are coated with metal oxides and that are useful in the laser marking of plastics are disclosed. The platelet-shaped substrates may be employed as an additive to plastic for laser marking of a wide variety of plastics and for use with a number of different laser types.
    Type: Grant
    Filed: February 18, 2000
    Date of Patent: March 16, 2004
    Assignee: Rona/EMI Industries, Inc.
    Inventor: Guoyi Fu