Patents Examined by Ngoolan T. Mai
  • Method of making a cemented carbide power with low compacting pressure
    Patent number: RE40717
    Abstract: The present invention relates to a method of making a cemented carbide with submicron WC grain size with a powder metallurgical technique including milling, pressing and sintering. The method includes milling all components except WC for about three hours, then adding the WC powder and milling for about ten additional hours. In this way a cemented carbide powder with acceptable low compacting pressure is obtained.
    Type: Grant
    Filed: July 12, 2006
    Date of Patent: June 9, 2009
    Assignee: Sandvik Intellectual Property AB
    Inventor: Mats Waldenstrom