Patents by Inventor Larry D. Zellman

Larry D. Zellman 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).

  • AL-SI-MG-ZN-CU ALLOY FOR AEROSPACE AND AUTOMOTIVE CASTINGS
    Publication number: 20100047113
    Abstract: The present invention provides an aluminum casting alloy with a composition including 4%-9% Si; 0.1%-0.7% Mg; less than or equal to 5% Zn; less than 0.15% Fe; less than 4% Cu; less than 0.3% Mn; less than 0.05% B; less than 0.15% Ti; and the remainder consisting essentially of aluminum. The inventive AlSiMg composition provides increased mechanical properties (Tensile Yield Strength and Ultimate Tensile Strength) in comparison to similiarly prepared E357 alloy at room temperature and high temperature. The present invention also includes a shaped casting formed from the inventive composition and a method of forming a shaped casting from the inventive composition.
    Type: Application
    Filed: November 3, 2009
    Publication date: February 25, 2010
    Applicant: Alcoa Inc.
    Inventors: Jen C. Lin, Xinyan Yan, Cagatay Yanar, Larry D. Zellman, Xavier Dumant, Robert Tombari
  • Al-Si-Mg-Zn-Cu alloy for aerospace and automotive castings
    Patent number: 7625454
    Abstract: The present invention provides an aluminum casting alloy with a composition including 4%-9% Si; 0.1%-0.7% Mg; less than or equal to 5% Zn; less than 0.15% Fe; less than 4% Cu; less than 0.3% Mn; less than 0.05% B; less than 0.15% Ti; and the remainder consisting essentially of aluminum. The inventive AlSiMg composition provides increased mechanical properties (Tensile Yield Strength and Ultimate Tensile Strength) in comparison to similiarly prepared E357 alloy at room temperature and high temperature. The present invention also includes a shaped casting formed from the inventive composition and a method of forming a shaped casting from the inventive composition.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: December 1, 2009
    Assignee: Alcoa Inc.
    Inventors: Jen C. Lin, Xinyan Yan, Cagatay Yanar, Larry D. Zellman, Xavier Dumant, Robert Tombari