Patents by Inventor Hee-Man Son

Hee-Man Son 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).

  • Corrosion resistance improved steel sheet for automotive muffler and method of producing the steel sheet
    Patent number: 7922968
    Abstract: Provided are a steel sheet for an automotive muffler and a method for producing the steel sheet. The steel sheet includes 0.01% by weight or less of C, 0.1 to 0.3% by weight of Si, 0.3 to 0.5% by weight of Mn, 0.015% by weight or less of P, 0.015% or less by weight of S, 0.02 to 0.05% by weight of Al, 0.004% or less of N, 0.2 to 0.6% by weight of Cu, 0.01 to 0.04% by weight of Co, and a remainder of Fe and unavoidable impurities. The method includes 0.01% by weight or less of C, 0.1 to 0.3% by weight of Si, 0.3 to 0.5% by weight of Mn, 0.015% by weight or less of P, 0.015% or less by weight of S, 0.02 to 0.05% by weight of Al, 0.004% or less of N, 0.2 to 0.6% by weight of Cu, 0.01 to 0.
    Type: Grant
    Filed: October 25, 2006
    Date of Patent: April 12, 2011
    Assignee: Posco
    Inventors: Won-Ho Son, Jai-Ik Kim, Seung-Hee Lee, Jeong-Bong Yoon, Hee-Man Son
  • Corrosion Resistance Improved Steel Sheet for Autmotive Muffler and Method of Producing the Steel Sheet
    Publication number: 20080257461
    Abstract: Provided are a steel sheet for an automotive muffler and a method for producing the steel sheet. The steel sheet includes 0.01% by weight or less of C, 0.1 to 0.3% by weight of Si, 0.3 to 0.5% by weight of Mn, 0.015% by weight or less of P, 0.015% or less by weight of S, 0.02 to 0.05% by weight of Al, 0.004% or less of N, 0.2 to 0.6% by weight of Cu, 0.01 to 0.04% by weight of Co, and a remainder of Fe and unavoidable impurities. The method includes 0.01% by weight or less of C, 0.1 to 0.3% by weight of Si, 0.3 to 0.5% by weight of Mn, 0.015% by weight or less of P, 0.015% or less by weight of S, 0.02 to 0.05% by weight of Al, 0.004% or less of N, 0.2 to 0.6% by weight of Cu, 0.01 to 0.
    Type: Application
    Filed: October 25, 2006
    Publication date: October 23, 2008
    Inventors: Won-Ho Son, Jai-Ik Kim, Seung-Hee Lee, Jeong-Bong Yoon, Hee-Man Son