Patents by Inventor Danny T. D. Thieu

Danny T. D. Thieu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Hi-density sintered alloy and spheroidization method for pre-alloyed powders
    Patent number: 5552109
    Abstract: This invention relates to a process of forming a sintered article of powder metal comprising blending graphite and lubricant with a pre-alloyed iron based powder, pressing said blended mixture to shape in a single compaction stage sintering said article, and then high temperature sintering said article in a reducing atmosphere to produce a sintered article having a density greater than 7.4 g/cc.
    Type: Grant
    Filed: June 29, 1995
    Date of Patent: September 3, 1996
    Inventors: Rohith Shivanath, Peter Jones, Danny T. D. Thieu
  • Hi-density sintered alloy
    Patent number: 5516483
    Abstract: A process of forming a sintered article for powder metal comprising blending carbon and ferro alloys and lubricant with compressible elemental iron powder, pressing said blended mixture to form sintering said article, and then high temperature sintering said article in a reducing atmosphere to produce a sintered article having a high density from a single compression.
    Type: Grant
    Filed: February 8, 1994
    Date of Patent: May 14, 1996
    Assignee: Stackpole Limited
    Inventors: Rohith Shivanath, Peter Jones, Danny T. D. Thieu