Patents by Inventor Akira Shiroyama

Akira Shiroyama 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).

  • Material for phosphate fertilizer and method for production thereof
    Publication number: 20040163435
    Abstract: Provided is a raw material for phosphate fertilizer having excellent fertilizer characteristics, which raw material consists essentially of a slag containing phosphate generated from dephosphorization reaction in molten iron, and is a method for manufacturing the raw material suitable for manufacturing the phosphate fertilizer. The raw material for phosphate fertilizer consists essentially of a slag containing phosphate generated from dephosphorization reaction in molten iron.
    Type: Application
    Filed: April 5, 2004
    Publication date: August 26, 2004
    Applicant: JFE STEEL CORPORATION
    Inventors: Tatsuhito Takahashi, Haruyoshi Tanabe, Yasuko Yao, Shigeru Inoue, Keiji Watanabe, Tsuneo Isoo, Satoshi Kohira, Ryo Kawabata, Akira Shiroyama, Hidetoshi Matsuno, Takeshi Murai