Patents by Inventor Makoto Hiroishi

Makoto Hiroishi 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 of casting molten metal using mold additives
    Patent number: 3949803
    Abstract: A mould flux which comprises at least 30% by weight of a mixture comprising:I. wollastonite;Ii. at least one low melting fluxing agent.
    Type: Grant
    Filed: July 30, 1974
    Date of Patent: April 13, 1976
    Assignee: Foseco International Limited
    Inventors: Makoto Hiroishi, Kazuo Mitsunaga, Yoshiyuki Fujisawa