Patents Assigned to Sherwood Technology, Inc.
  • Laser coding
    Patent number: 6888095
    Abstract: A method for making an object, wherein the object comprises a material including a functional group and a metal compound or acid that causes an elimination reaction on irradiation with a laser, to form a reaction product of contrasting colour, comprises directing a laser beam on to the areas of the object to be marked. For example, by using a carbohydrate and a metal salt, effective marking can be achieved on the coating of a pill or other edible material.
    Type: Grant
    Filed: February 27, 2002
    Date of Patent: May 3, 2005
    Assignee: Sherwood Technology, Inc.
    Inventor: Nazir Khan