Patents by Inventor Naoshi Ishihara

Naoshi Ishihara 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).

  • Sintered alloy, method for production thereof and valve sheet
    Publication number: 20040194576
    Abstract: To provide a sintered alloy capable of showing wear resistance and a process for producing the same as well as a valve seat of good wear resistance.
    Type: Application
    Filed: May 5, 2004
    Publication date: October 7, 2004
    Inventors: Kimihiko Ando, Hiroyuki Murase, Noriyuki Tsuge, Kunihiko Endoh, Yukiharu Tomita, Naoshi Ishihara, Masahiro Hayakawa