Patents by Inventor Koji SHIMOJIMA

Koji SHIMOJIMA 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).

  • High temperature oxidation resistant rare metal-free hard sintered body and method of manufacturing the same
    Patent number: 10493529
    Abstract: Provided is a hard sintered body which exhibits excellent high temperature oxidation resistance and has a high hardness at a high temperature. In the hard sintered body, a binder phase is contained at from 8.8 to 34.4 mol % and the balance is composed of a hard phase and inevitable impurities. The binder phase contains iron aluminide containing FeAl as a main component and alumina that is dispersed in iron aluminide and has a particle size of 1 ?m or less. The hard phase is composed of at least one kind selected from carbides, nitrides, carbonitrides and borides of Group 4 metals, Group 5 metals and Group 6 metals in the periodic table, and solid solutions of these.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: December 3, 2019
    Assignee: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Koji Shimojima, Ryouichi Furushima, Hiroyuki Hosokawa, Kiyotaka Katou, Akihiro Matsumoto
  • HIGH TEMPERATURE OXIDATION RESISTANT RARE METAL-FREE HARD SINTERED BODY AND METHOD OF MANUFACTURING THE SAME
    Publication number: 20170304898
    Abstract: Provided is a hard sintered body which exhibits excellent high temperature oxidation resistance and has a high hardness at a high temperature. In the hard sintered body, a binder phase is contained at from 8.8 to 34.4 mol % and the balance is composed of a hard phase and inevitable impurities. The binder phase contains iron aluminide containing FeAl as a main component and alumina that is dispersed in iron aluminide and has a particle size of 1 ?m or less. The hard phase is composed of at least one kind selected from carbides, nitrides, carbonitrides and borides of Group 4 metals, Group 5 metals and Group 6 metals in the periodic table, and solid solutions of these.
    Type: Application
    Filed: October 2, 2015
    Publication date: October 26, 2017
    Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Koji SHIMOJIMA, Ryouichi FURUSHIMA, Hiroyuki HOSOKAWA, Kiyotaka KATOU, Akihiro MATSUMOTO