Patents Assigned to PPR GmbH
  • ABRASIVE FLAP DISC
    Publication number: 20140080392
    Abstract: An abrasive flap disc having improved properties with respect to production and grinding behavior combines an abrasive grit having a special grit mixture consisting of 25% to 75% (high-performance ceramic) zirconium dioxide and of 25% to 75% aluminum oxide with a number of abrasive lamellae per abrasive flap disc in the range between 30 and 46.
    Type: Application
    Filed: September 17, 2013
    Publication date: March 20, 2014
    Applicant: PPR GmbH
    Inventor: Gerd EISENBLAETTER
  • Front surface of a grinding disc
    Patent number: D724635
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: March 17, 2015
    Assignee: PPR GmbH
    Inventor: Gerd Eisenblätter