Patents by Inventor Toboru Sugiyama

Toboru Sugiyama 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).

  • Welding material for super low temperature steels
    Patent number: 3966424
    Abstract: This invention provides a welding material for super low temperature steels which comprises not more than 0.2% carbon, 5 - 12% manganese, not more than 30% chromium, 4 - 8% niobium, 22% iron and not more than 1.5% silicon, the balance being substantially nickel, and which can give excellent strength and impact value to the weld zone. In one embodiment, the welding material is an integral body composed of a metal-forming material and a flux of lime or lime-titania in which the metal forming components are within the above range.
    Type: Grant
    Filed: October 7, 1974
    Date of Patent: June 29, 1976
    Assignee: Kobe Steel Ltd.
    Inventors: Tomokazu Godai, Toboru Sugiyama, Katushi Nishimura