Patents by Inventor Chwen Chih Yang

Chwen Chih Yang 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).

  • Method for manufacturing castable metal matrix composite bodies and bodies produced thereby
    Patent number: 6223805
    Abstract: The present invention relates to a novel method for forming cast metal matrix composite bodies. In particular, the present invention relates to a novel method for forming or recycling metal matrix composite bodies so as to render such bodies in a condition for casting or recasting as a cast metal matrix composite body. Specifically, a scrap metal matrix composite body and preferably a scrap cast metal matrix composite body is placed into a crucible, optionally along with unreinforced matrix metal and/or virgin metal matrix composite material. Whether the scrap and/or virgin materials are placed into the crucible in solid or molten form, the contents of the crucible are ultimately rendered molten to form a composite melt.
    Type: Grant
    Filed: April 22, 1994
    Date of Patent: May 1, 2001
    Assignee: Lanxide Technology Company, LP
    Inventors: Charles Robert Banning, John Thomas Burke, Alan Scott Nagelberg, Vilupanur Alwar Ravi, Michael Allan Richmond, Chwen Chih Yang
  • Method for making graded composite bodies and bodies produced thereby
    Patent number: 5549151
    Abstract: The present invention relates to the formation of bodies having graded properties. Particularly, the invention provides a method for forming a metal matrix composite body having graded properties. The graded properties are achieved by, for example, locating differing amounts of filler material in different portions of a formed body and/or locating different compositions of filler material in different portions of a formed body and/or locating different sizes of filler materials in different portions of a formed body. In addition, the invention provides for the formation of macrocomposite bodies wherein, for example, an excess of matrix metal can be integrally bonded or attached to a graded metal matrix composite portion of a macrocomposite body. Moreover, if desired, it is possible to produce a metal matrix composite body with substantially the same properties throughout.
    Type: Grant
    Filed: December 12, 1994
    Date of Patent: August 27, 1996
    Assignee: Lanxide Technology Company, LP
    Inventor: Chwen-Chih Yang
  • Method for making graded composite bodies and bodies produced thereby
    Patent number: 5372777
    Abstract: The present invention relates to the formation of bodies having graded properties. Particularly, the invention provides a method for forming a metal matrix composite body having graded properties. The graded properties are achieved by, for example, locating differing amounts of filler material in different portions of a formed body and/or locating different compositions of filler material in different portions of a formed body and/or locating different sizes of filler materials in different portions of a formed body. In addition, the invention provides for the formation of macrocomposite bodies wherein, for example, an excess of matrix metal can be integrally bonded or attached to a graded metal matrix composite portion of a macrocomposite body.
    Type: Grant
    Filed: August 30, 1993
    Date of Patent: December 13, 1994
    Assignee: Lanxide Technology Company, LP
    Inventor: Chwen-Chih Yang
  • Method for making graded composite bodies produced thereby
    Patent number: 5240672
    Abstract: The present invention relates to the formation of bodies having graded properties. Particularly, the invention provides a method for forming a metal matrix composite body having graded properties. The graded properties are achieved by, for example, locating differing amounts of filler material in different portions of a formed body and/or locating different compositions of filler material in different portions of a formed body and/or locating different sizes of filler materials in different portions of a formed body. In addition, the invention provides for the formation of macrocomposite bodies wherein, for example, an excess of matrix metal can be integrally bonded or attached to a graded metal matrix composite portion of a macrocomposite body.
    Type: Grant
    Filed: April 29, 1991
    Date of Patent: August 31, 1993
    Assignee: Lanxide Technology Company, LP
    Inventor: Chwen-Chih Yang