Patents by Inventor Shaiw-Rong Liu

Shaiw-Rong Liu 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).

  • FABRICATION OF HARDMETALS HAVING BINDERS WITH RHENIUM OR NI-BASED SUPERALLOY
    Publication number: 20080008616
    Abstract: Hardmetal compositions each including hard particles having a first material and a binder matrix having a second, different material comprising rhenium or a Ni-based superalloy. A two-step sintering process may be used to fabricate such hardmetals at relatively low sintering temperatures in the solid-state phase to produce substantially fully-densified hardmetals.
    Type: Application
    Filed: September 14, 2004
    Publication date: January 10, 2008
    Inventor: Shaiw-Rong Liu
  • High-Performance Friction Stir Welding Tools
    Publication number: 20070119276
    Abstract: Friction stir welding tools made of a hardmetal including hard particles having a first material and a binder matrix having a second, different material.
    Type: Application
    Filed: January 31, 2007
    Publication date: May 31, 2007
    Inventor: Shaiw-Rong Liu
  • Hardmetal materials for high-temperature applications
    Publication number: 20070034048
    Abstract: Hardmetal compositions each including hard particles having a first material and a binder matrix having a second, different material comprising rhenium or a Ni-based superalloy. Tungsten may also be used a binder matrix material. A two-step sintering process may be used to fabricate such hardmetals at relatively low sintering temperatures in the solid-state phase to produce substantially fully-densified hardmetals. A hardmetal coating or structure may be formed on a surface by using a thermal spray method.
    Type: Application
    Filed: August 21, 2006
    Publication date: February 15, 2007
    Inventor: Shaiw-Rong Liu
  • High-performance hardmetal materials
    Publication number: 20050191482
    Abstract: Hardmetal compositions each including hard particles having a first material and a binder matrix having a second, different material comprising rhenium or a Ni-based superalloy. Tungsten may also be used a binder matrix material. A two-step sintering process may be used to fabricate such hardmetals at relatively low sintering temperatures in the solid-state phase to produce substantially fully-densified hardmetals. A hardmetal coating or structure may be formed on a surface by using a thermal spray method.
    Type: Application
    Filed: March 15, 2005
    Publication date: September 1, 2005
    Inventor: Shaiw-Rong Liu