Patents by Inventor Hao-Shang Liu

Hao-Shang 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).

  • Low nickel containing chromium-nickel-manganese- copper austenitic stainless steel
    Patent number: 7780908
    Abstract: An austenitic stainless steel includes (a) 0.03 wt % to 0.12 wt % of C, (b) 0.2 wt % to 1.0 wt % of Si, (c) 8.55 wt % to 10.12 wt % of Mn, (d) 14.0 wt % to 16.0 wt % of Cr, (e) 4.05 wt % to 4.31 wt % of Ni, (f) 0.04 wt % to 0.07 wt % of N, (g) 1.0 wt % to 3.5 wt % of Cu, (h) trace amount of Mo, and the balance being Fe and incidental impurities. The austenitic stainless steel has a ?-ferrite content less than 8.5 and equal to 6.77[(d)+(h)+1.5(b)]?4.85[(e)+30(a)+30(f)+0.5(c)+0.3(g)]?52.75.
    Type: Grant
    Filed: October 3, 2007
    Date of Patent: August 24, 2010
    Assignee: Yieh United Steel Corp.
    Inventors: Meng-Hsin Hsieh, Yi-Cheng Wu, Pei-Te Huang, Hao-Shang Liu
  • LOW NICKEL CONTAINING CHROMIUM-NICKEL-MANGANESE- COPPER AUSTENITIC STAINLESS STEEL
    Publication number: 20080075623
    Abstract: An austenitic stainless steel includes (a) 0.03 wt % to 0.12 wt % of C, (b) 0.2 wt % to 1.0 wt % of Si, (c) 8.55 wt % to 10.12 wt % of Mn, (d) 14.0 wt % to 16.0 wt % of Cr, (e) 4.05 wt % to 4.31 wt % of Ni, (f) 0.04 wt % to 0.07 wt % of N, (g) 1.0 wt % to 3.5 wt % of Cu, (h) trace amount of Mo, and the balance being Fe and incidental impurities. The austenitic stainless steel has a ?-ferrite content less than 8.5 and equal to 6.77[(d)+(h)+1.5(b)]?4.85[(e)+30(a)+30(f)+0.5(c)+0.3(g)]?52.75.
    Type: Application
    Filed: October 3, 2007
    Publication date: March 27, 2008
    Applicant: Yieh United Steel Corp.
    Inventors: Meng-Hsin Hsieh, Yi-Cheng Wu, Pei-Te Huang, Hao-Shang Liu
  • Low nickel containing chromim-nickel-mananese-copper austenitic stainless steel
    Publication number: 20050103404
    Abstract: An austenitic stainless steel includes (a) 0.03 wt % to 0.12 wt % of C, (b) 0.2 wt % to 1.0 wt % of Si, (c) 7.5 wt % to 10.5 wt % of Mn, (d) 14.0 wt % to 16.0 wt % of Cr, (e) 4.05 wt % to 4.31 wt % of Ni, (f) 0.04 wt % to 0.07 wt % of N, (g) 1.0 wt % to 3.5 wt % of Cu, (h) trace amount of Mo, and the balance being Fe and incidental impurities. The austenitic stainless steel has a ?-ferrite content less than 8.5 and equal to 6.77[(d)+(h)+1.5(b)]?4.85[(e)+30(a)+30(f)+0.5(c)+0.3(g)]?52.75.
    Type: Application
    Filed: November 19, 2004
    Publication date: May 19, 2005
    Applicant: Yieh United Steel Corp.
    Inventors: Meng-Hsin Hsieh, Yi-Cheng Wu, Pei-Te Huang, Hao-Shang Liu
  • Low nickel containing chromium-nickel-maganese-copper austenitic stainless steel
    Publication number: 20040079451
    Abstract: An austenitic stainless steel includes (a) 0.03 wt % to 0.12 wt % of C, (b) 0.2 wt % to 1.0 wt % of Si, (c) 7.5 wt % to 10.5 wt % of Mn, (d) 14.0 wt % to 16.0 wt % of Cr, (e) 1.0 wt % to 5.0 wt % of Ni, (f) 0.04 wt % to 0.25 wt % of N, (g) 1.0 wt % to 3.5 wt % of Cu, (h) trace amount of Mo, and the balance being Fe and incidental impurities. The austenitic stainless steel has a &dgr;-ferrite content less than 8.5 and equal to 6.77[(d)+(h)+1.5(b)]−4.85[(e)+30(a)+30(f)+0.5(c)+0.3(g)]−52.75.
    Type: Application
    Filed: January 28, 2003
    Publication date: April 29, 2004
    Applicant: Yieh United Steel Corp.
    Inventors: Meng-Hsin Hsieh, Yi-Cheng Wu, Pei-Te Huang, Hao-Shang Liu