Patents Assigned to PPT Research Inc
  • Stable aqueous slurry suspensions
    Patent number: 7381690
    Abstract: An aqueous slurry composition for lapping, saw wire cutting, and finishing operations which contains about 0.1 to 70% by weight of abrasive particles, 0.1 to 20% by weight of suspending particles that have a density of less than or similar to the aqueous or semi-aqueous carrier medium, and the method for creating the suspension.
    Type: Grant
    Filed: September 25, 2003
    Date of Patent: June 3, 2008
    Assignee: PPT Research Inc
    Inventors: Deliang Ding, Jesse Leaymen, Irl E. Ward