Patents by Inventor Ryuhei Tanaka

Ryuhei Tanaka 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).

  • Patent number: 11984660
    Abstract: An adaptive array antenna system receives a desired wave arriving through K time slots each allocated to one of K transmitting stations. In the adaptive array antenna system, an adaptive control device includes a correlation matrix calculating unit, a correlation matrix storing unit, an inverse matrix calculating unit, and a weighting factor calculating unit. The inverse matrix calculating unit acquires a correlation matrix having been calculated at previous time for another time slot other than the current time slot from the correlation matrix storing unit, regards the acquired correlation matrix as an interference noise correlation matrix, and calculates an inverse matrix of the interference noise correlation matrix. The weighting factor calculating unit calculates values of a plurality of weighting factors used by a beamforming unit using the inverse matrix.
    Type: Grant
    Filed: December 23, 2021
    Date of Patent: May 14, 2024
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yuji Tanaka, Yoshiki Takahashi, Ryuhei Takahashi
  • Patent number: 11976859
    Abstract: A refrigeration cycle apparatus includes a refrigeration cycle, an adsorption section, and a first bypass flow path. The refrigeration cycle includes a compressor, a radiator, an expansion mechanism, and an evaporator, and uses a non-azeotropic refrigerant mixture including a first refrigerant and a second refrigerant. The adsorption section includes an adsorbent and stores the first refrigerant adsorbed by the adsorbent. The adsorbent adsorbs the first refrigerant, and does not adsorb the second refrigerant or the adsorption performance thereof for the second refrigerant is lower than the adsorption performance thereof for the first refrigerant. The first bypass flow path connects a first end which is a high-pressure part of the refrigeration cycle and a second end which is a low-pressure part of the refrigeration cycle. The adsorption section and a valve are disposed in the first bypass flow path.
    Type: Grant
    Filed: September 29, 2023
    Date of Patent: May 7, 2024
    Assignee: Daikin Industries, Ltd.
    Inventors: Hiroki Ueda, Atsushi Yoshimi, Eiji Kumakura, Masaki Tanaka, Masaki Nakayama, Ryuhei Kaji
  • Patent number: 6221359
    Abstract: A hemopoietic stem cell augmenting agent in which at least one type of hepatocyte growth factor is contained as an active component is provided. The hepatocyte growth factor has an augmenting activity on undifferentiated pluripotent hemopoietic stem cells and is useful as a hemopoietic stem cell augmenting agent for treatment of bone marrow suppression and for treatment of bone marrow malfunctions and furthermore is useful for in vitro growth of peripheral blood stem cells and bone marrow stem cells. Furthermore, a hepatocyte growth factor derived from human normal fibroblasts which is considered to be a type of hepatocyte growth factor can be obtained by genetic recombination techniques, and said factor is also useful as a hemopoietic stem cells augmenting agent.
    Type: Grant
    Filed: May 21, 1993
    Date of Patent: April 24, 2001
    Assignee: Toray Industries, Inc.
    Inventors: Atsushi Komiyama, Tatsutoshi Nakahata, Tetsuo Kubo, Ryuhei Tanaka, Genji Kawano, Tetsuo Sudo, Emiko Sano, Katsuaki Kojima