Patents by Inventor Yukari NAKAYAMA

Yukari NAKAYAMA 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 manufacturing transition piece and transition piece
    Patent number: 11684976
    Abstract: The invention provides a method of manufacturing a transition piece that has a high degree of freedom in adjustment of a length, a shape, or the like, can carry out a dissimilar metal welding easily, and is easy to perform, and a transition piece. The transition piece includes one end having the same composition as one material to be welded, another end having the same composition as another material to be welded, and an intermediate layer formed between the one end and the other end. The composition of the one end and the composition of the other end become the same as approaching a center. In the method of manufacturing the transition piece according to the invention, at least the intermediate layer among the one end, the other end, and the intermediate layer is formed by a additive manufacturing method.
    Type: Grant
    Filed: July 16, 2020
    Date of Patent: June 27, 2023
    Assignee: Hitachi-GE Nuclear Energy, Ltd.
    Inventors: Yukari Nakayama, Sei Hirano, Yoshihisa Kiyotoki
  • METHOD OF MANUFACTURING TRANSITION PIECE AND TRANSITION PIECE
    Publication number: 20210031264
    Abstract: The invention provides a method of manufacturing a transition piece that has a high degree of freedom in adjustment of a length, a shape, or the like, can carry out a dissimilar metal welding easily, and is easy to perform, and a transition piece. The transition piece includes one end having the same composition as one material to be welded, another end having the same composition as another material to be welded, and an intermediate layer formed between the one end and the other end. The composition of the one end and the composition of the other end become the same as approaching a center. In the method of manufacturing the transition piece according to the invention, at least the intermediate layer among the one end, the other end, and the intermediate layer is formed by a additive manufacturing method.
    Type: Application
    Filed: July 16, 2020
    Publication date: February 4, 2021
    Inventors: Yukari NAKAYAMA, Sei HIRANO, Yoshihisa KIYOTOKI