Patents by Inventor Yoshiaki Shingu

Yoshiaki Shingu 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).

  • Patent number: 5643530
    Abstract: The invention intends to develop a functional material provided with sufficient non-magnetism, strength and ductility. The material is a non-magnetic high manganese cast product composed of 0.2 to 0.03% C, not more than 1.0%. Si, 10 to 20% Mn, not more than 0.1% P, not more than 0.05% S, 15.0 to 20.0% Cr, 2.5 to 6.0% Ni and not more than 0.20% N, and is used in a state of as cast. In this non-magnetic high manganese cast product, a magnetic permeability in the state as cast is not more than 1.05, and the non-magnetic high manganese steel has mechanical properties such that a tensile strength is not less than 620N/mm.sup.2, a proof strength is not less than 250N/mm.sup.2, an elongation is not less than 40%, and a reduction of area is not less than 30%. The material is preferably applied to a complicated or large-sized product.
    Type: Grant
    Filed: July 13, 1995
    Date of Patent: July 1, 1997
    Assignee: Kurimoto, Ltd.
    Inventors: Yoshiaki Shingu, Yasushi Ueda