Patents by Inventor Syuuhou Koseki

Syuuhou Koseki 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).

  • Hard-coated tool and its production method
    Patent number: 9534292
    Abstract: A hard-coated tool comprising a titanium carbonitride layer formed directly on a WC-based cemented carbide substrate by a chemical vapor deposition method; the titanium carbonitride layer having a composition comprising 74-81% by mass of titanium, 13-16% by mass of carbon and 6-10% by mass of nitrogen; the titanium carbonitride layer having a structure comprising columnar crystal grains having an average transverse cross section diameter of 0.01-0.22 ?m; a layer of W diffused from the substrate to the titanium carbonitride layer having an average thickness of 30-200 nm; and the titanium carbonitride layer having an X-ray diffraction peak of a (422) plane in a 2? range of 122.7-123.7°.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: January 3, 2017
    Assignee: Hitachi Tool Engineering, Ltd.
    Inventors: Yuuzoh Fukunaga, Syuuhou Koseki, Kazuyuki Kubota, Kenichi Inoue
  • HARD-COATED TOOL AND ITS PRODUCTION METHOD
    Publication number: 20150240353
    Abstract: A hard-coated tool comprising a titanium carbonitride layer formed directly on a WC-based cemented carbide substrate by a chemical vapor deposition method; the titanium carbonitride layer having a composition comprising 74-81% by mass of titanium, 13-16% by mass of carbon and 6-10% by mass of nitrogen; the titanium carbonitride layer having a structure comprising columnar crystal grains having an average transverse cross section diameter of 0.01-0.22 ?m; a layer of W diffused from the substrate to the titanium carbonitride layer having an average thickness of 30-200 nm; and the titanium carbonitride layer having an X-ray diffraction peak of a (422) plane in a 2? range of 122.7-123.7°.
    Type: Application
    Filed: September 30, 2013
    Publication date: August 27, 2015
    Applicant: HITACHI TOOL ENGINEERING, LTD.
    Inventors: Yuuzoh Fukunaga, Syuuhou Koseki, Kazuyuki Kubota, Kenichi Inoue