Patents by Inventor Sadayuki Iwamoto

Sadayuki Iwamoto 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).

  • Method for manufacture of ferrosilicon nitride
    Patent number: 4150999
    Abstract: Method for the manufacture of ferrosilicon nitride is disclosed. The method produces ferrosilicon nitride with a silicon nitride content of 65% to 85% by weight by oxidizing the metallic iron which is present in the ferrosilicon nitride in an aqueous medium in the presence of selected oxidizing agents while forcing a mixture of air and steam through the aqueous medium.
    Type: Grant
    Filed: June 1, 1978
    Date of Patent: April 24, 1979
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventor: Sadayuki Iwamoto