Patents by Inventor Taie Li

Taie Li 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 making machinable lead-free copper alloys with additive
    Patent number: 5614038
    Abstract: Machinable lead free brasses for potable water applications are provided wherein a combination of bismuth and selenium are substituted in the alloy for lead and the bismuth and selenium are added to the alloy in the form of an additive product comprising bismuth selenide. A method of making the brasses which meets environmental and safety regulations is also provided. The bismuth selenide is preferably made by sintering particles of bismuth and selenium in a Bi/Se weight ratio of about 1.8 or greater and fusing the sinter.
    Type: Grant
    Filed: June 21, 1995
    Date of Patent: March 25, 1997
    Assignee: ASARCO Incorporated
    Inventors: Michael G. King, Taie Li
  • Production of spherical bismuth shot
    Patent number: 5540749
    Abstract: A method is provided for producing bismuth and bismuth alloy shot particles by a procedure whereby molten bismuth at a temperature less than about 100.degree. C. above the melting point of the bismuth is used to form drops of molten bismuth which fall through a vessel containing a material more viscous than water with the method having a Reynolds Number less than about 100. Preferred materials are polyethylene glycols having a molecular weight of about 4500 and 8000.
    Type: Grant
    Filed: September 8, 1994
    Date of Patent: July 30, 1996
    Assignee: Asarco Incorporated
    Inventors: Taie Li, David E. Sanger, Duane M. Yantorno
  • Process for the recovery and separation of arsenic from antimony
    Patent number: 5110353
    Abstract: Fume generated by roasting speiss is contacted with an oxygen-containing gas at an elevated temperature for a sufficient time to product arsenic and antimony products which may be separated from each other by means such as condensation. Further, in the roasting of antimony-containing phases (such as speiss) the presence of arsenic can enhance the volatility of the antimony.
    Type: Grant
    Filed: January 29, 1991
    Date of Patent: May 5, 1992
    Assignee: ASARCO Incorporated
    Inventors: Taie Li, Thomas P. Clement, II, John P. Hager
  • Process for the recovery and separation of arsenic from antimony
    Patent number: 4808221
    Abstract: Fume generated by roasting speiss is contacted with an oxygen-containing gas at an elevated temperature for a sufficient time to produce arsenic and antimony products which may be separated from each other by means such as condensation. Further, in the roasting of antimony-containing phases (such as speiss) the presence of arsenic can enhance the volatility of the antimony.
    Type: Grant
    Filed: August 25, 1987
    Date of Patent: February 28, 1989
    Assignee: Asarco Incorporated
    Inventors: Thomas P. Clement, II, Taie Li, John P. Hager