Patents by Inventor Jien-Wei Yeh

Jien-Wei Yeh 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).

  • Publication number: 20040258557
    Abstract: A high strength multi-component alloy contains multi-principal elements and is formulated under a design concept different from the prior art. The multi-component alloy contains Fe, Co, Ni, Cr, Cu and Al as main elements. Each main element of the multi-component alloy is in the range of about 5 to about 35 atom % based on the total number of atoms of the alloy. The multi-component alloy has high strength at high temperature.
    Type: Application
    Filed: November 21, 2003
    Publication date: December 23, 2004
    Inventors: Tao-Tsung Shun, Jien-Wei Yeh
  • Publication number: 20020159914
    Abstract: The present invention is related to high-entropy multielement alloys. The features of the alloys are that there are five to eleven major metallic elements and with or without minor elements, the minor elements are selected from the element group other than the major metallic elements, the mole fraction of each major metallic element in the alloy is between 5% and 30%, and the mole fraction of each minor element in the alloy is less than 3.5%. The high-entropy multielement alloys in the present invention are high in hardness, heat resistance, and corrosion resistance.
    Type: Application
    Filed: April 29, 2002
    Publication date: October 31, 2002
    Inventor: Jien-Wei Yeh
  • Patent number: 5571348
    Abstract: A method for improving the properties of an alloy is provided. The method includes steps of a) preparing a raw alloy to be worked, b) providing a working apparatus, and c) repetitively kneading the raw alloy in the working apparatus until a desired property is achieved. The present invention also provides the working apparatus and discloses the product produced thereby.
    Type: Grant
    Filed: November 23, 1994
    Date of Patent: November 5, 1996
    Assignee: National Tsing Hua University
    Inventor: Jien-Wei Yeh
  • Patent number: 5332198
    Abstract: Disclosed is a method and an apparatus for producing rapidly-solidified flake particles, which combines centrifugal atomization with metal substrate cooling. A stream of molten metal is disintegrated centrifugally into droplets by a rotating disk. Then the molten droplets are solidified as flake particles as soon as impinging upon the annular planar surface of a cooled rotating concave disk. The solidified flake particles are subsequently departed from the annular planar surface by the centrifugal force and collected in a chamber.
    Type: Grant
    Filed: November 3, 1992
    Date of Patent: July 26, 1994
    Assignee: National Science Council
    Inventors: Jien-Wei Yeh, Kuo-Shung Liu, Kuang-Yuan Shue, Yung-Chiun Ho
  • Patent number: 5259861
    Abstract: Disclosed is a method and an apparatus for producing rapidly-solidified flake particles, which combines centrifugal atomization with metal substrate cooling. A stream of molten metal is disintegrated centrifugally into droplets by a rotating disk. Then the molten droplets are solidified as flake particles as soon as impinging upon the annular planar surface of a cooled rotating concave disk. The solidified flake particles are subsequently departed from the annular planar surface by the centrifugal force and collected in a chamber.
    Type: Grant
    Filed: March 5, 1992
    Date of Patent: November 9, 1993
    Assignee: National Science Council
    Inventors: Jien-Wei Yeh, Kuo-Shung Liu, Kuang-Yuan Shue, Yung-Chiun Ho
  • Patent number: 5213440
    Abstract: A method of making a yellow, transparent tempered glass and the product so made that comprises adding a certain quantity of CeO2 and TiO2 to the glass composition prior to a rapid cooling of the composition. Each additive is in the amount of about 1% to 6% and together they produce a yellow color. Also, at the same time, from 1% to 5% of BaO or PbO is added as an additive for enhancing the transparency and refractive index of the glass. The resulting yellow transparent tempered glass is especially suited for use in a reflecting roadstud and used for separating the traffic lanes on roads.
    Type: Grant
    Filed: September 26, 1991
    Date of Patent: May 25, 1993
    Inventors: Jien-Wei Yeh, Jenn-Jye Chu