Patents by Inventor Hwehyun Song

Hwehyun Song 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).

  • Violin structure and process
    Patent number: 4252863
    Abstract: An improved technique for making the finished shell of a violin. The wood used in the construction of a violin shell is subjected to a heating and treating process which improves the sound properties of the wood in a completed violin. The wood is first subjected to a temperature of 180.degree. F. to 350.degree. F. for a period of 1 to 2 months and then coated with iodine and again heated to a temperature of 300.degree. for a period of 2 to 7 days until the wood becomes charcoal-like. The wood is then scraped and varnished to produce the finished shell of a violin.
    Type: Grant
    Filed: November 13, 1979
    Date of Patent: February 24, 1981
    Inventor: Hwehyun Song