Patents by Inventor Masami Takei

Masami Takei 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).

  • Wireless Communication Environment Evaluation Method and System
    Publication number: 20240106553
    Abstract: The position of a movable body is estimated without requiring the movable body to recognize and report its own position, and the position is reflected in a structural model constructed in a computer for the purpose of wireless communication environment evaluation.
    Type: Application
    Filed: September 11, 2023
    Publication date: March 28, 2024
    Inventors: Ken TAKEI, Yuichi IGARASHI, Masami OHNISHI
  • IgA nephropathy-related DNA
    Patent number: 6962984
    Abstract: A novel DNA whose expression level fluctuates in leukocytes of IgA nephropathy patients in comparison with leukocytes of healthy persons, a process for isolating the DNA, a novel protein encoded by the DNA, an antibody recognizing the protein, methods for detecting the protein and the DNA, and methods of diagnosis and treatment of IgA nephropathy.
    Type: Grant
    Filed: December 7, 2000
    Date of Patent: November 8, 2005
    Assignee: Nihon University
    Inventors: Tetsuyoshi Ishiwata, Mikiko Sakurada, Ayako Kawabata, Satoshi Nakagawa, Tatsunari Nishi, Tetsuro Kuga, Shigemasa Sawada, Masami Takei, Kenji Shibata, Akiko Furuya
  • IGA nephropathy-related genes
    Patent number: 6828428
    Abstract: The present invention relates to a novel DNA related to IgA nephropathy obtained by a differential display method [FEBS Letters, 351, 231 (1994)] taking note of an mRNA whose expression level fluctuates in leukocytes of IgA nephropathy patients in comparison with leukocytes of healthy persons, a process for isolating the DNA, a method for detecting the DNA, a novel protein encoded by the DNA, an antibody recognizing the protein, a method for detecting the protein, and diagnosis and treatment of IgA nephropathy.
    Type: Grant
    Filed: June 4, 1998
    Date of Patent: December 7, 2004
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Tetsuyoshi Ishiwata, Mikiko Sakurada, Ayako Nishimura, Satoshi Nakagawa, Tatsunari Nishi, Tetsuro Kuga, Shigemasa Sawada, Masami Takei
  • DNA encoding IGA nephropathy indicating protein
    Patent number: 6790944
    Abstract: The present invention relates to a novel protein isolated from the leukocyte of IgA nephropathy patients, and DNA encoding the protein. It also relates to an oligonucleotide based on the nucleotide sequence complementary with the DNA, an antibody which specifically reacts with the protein and, furthermore, diagnostic and therapeutic drugs of IgA nephropathy comprising it.
    Type: Grant
    Filed: August 5, 1998
    Date of Patent: September 14, 2004
    Assignees: Kyowa Hakko Kogyo Co., Ltd., Kazusa DNA Research Institute Foundation
    Inventors: Tetsuyoshi Ishiwata, Mikiko Sakurada, Ayako Kawabata, Satoshi Nakagawa, Tetsuro Kuga, Tatsunari Nishi, Nobuo Nomura, Takahiro Nagase, Shigemasa Sawada, Masami Takei
  • IgA nephropathy-related DNA
    Publication number: 20030207828
    Abstract: A novel DNA whose expression level fluctuates in leukocytes of IgA nephropathy patients in comparison with leukocytes of healthy persons, a process for isolating the DNA, a novel protein encoded by the DNA, an antibody recognizing the protein, methods for detecting the protein and the DNA, and methods of diagnosis and treatment of IgA nephropathy.
    Type: Application
    Filed: December 7, 2000
    Publication date: November 6, 2003
    Inventors: Tetsuyoshi Ishiwata, Mikiko Sakurada, Ayako Kawabata, Satoshi Nakagawa, Tatsunari Nishi, Tetsuro Kuga, Shigemasa Sawada, Masami Takei, Kenji Shibata, Akiko Furuya
  • IGA NEPHROPATHY-RELATED GENES
    Publication number: 20020068707
    Abstract: The present invention relates to a novel DNA related to IgA nephropathy obtained by a differential display method [FEBS Letters, 351, 231 (1994)] taking note of an mRNA whose expression level fluctuates in leukocytes of IgA nephropathy patients in comparison with leukocytes of healthy persons, a process for isolating the DNA, a method for detecting the DNA, a novel protein encoded by the DNA, an antibody recognizing the protein, a method for detecting the protein, and diagnosis and treatment of IgA nephropathy.
    Type: Application
    Filed: June 4, 1998
    Publication date: June 6, 2002
    Inventors: TETSUYOSHI ISHIWATA, MIKIKO SAKURADA, AYAKO NISHIMURA, SATOSHI NAKAGAWA, TATSUNARI NISHI, TETSURO KUGA, SHIGEMASA SAWADA, MASAMI TAKEI
  • Composite diffusion type nitriding method, composite diffusion type nitriding apparatus and method for producing nitride
    Patent number: 5865908
    Abstract: A composite diffusion type nitriding method and a composite diffusion type nitriding apparatus of the present invention are effectively used for nitriding various materials, such as machine parts, as well as a material which is difficult for nitriding by a conventional method. The composite diffusion nitriding apparatus is formed of a container filled with solid granular materials, a furnace for housing the container therein, a nitriding gas introduction path for introducing the nitriding gas into the container, and an exhausting path for exhausting the gas from the container. In the method, the material to be nitrided is placed in the solid granular materials, and the nitriding gas is supplied to flow through the solid granular materials to thereby nitride the material.
    Type: Grant
    Filed: January 27, 1997
    Date of Patent: February 2, 1999
    Assignees: Shimadzu Mekutemu Kabushiki Kaisya, Lihit Seiko Co., Ltd.
    Inventors: Masami Takei, Hideto Fujita, Ryoji Fujino