Patents by Inventor Naoki Minami

Naoki Minami 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: 11967993
    Abstract: Provided is a communication apparatus for making connection to a communication network, including: an optical network unit; and an external power supply input/output terminal, the communication apparatus being configured such that electrical power is fed to the optical network unit from an external terminal that is connected to the external power supply input/output terminal and functions as an auxiliary power supply.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: April 23, 2024
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Toshimitsu Tanaka, Naoki Hanaoka, Toshihiro Hayashi, Hiroya Minami, Hidetoshi Takada
  • Patent number: 11926881
    Abstract: A high-strength cold-rolled steel sheet having a high yield ratio and excellent stretch flangeability and a method for manufacturing the steel sheet. The high-strength cold-rolled steel sheet has a chemical composition including, by mass %, C: 0.10 to 0.30%, Si: 0.50 to 2.00%, Mn: 2.5 to 4.0%, P: 0.050% or less, S: 0.020% or less, Al: 0.10% or less, N: 0.01% or less, Ti: 0.100% or less, and B: 0.0003 to 0.0030%, with the balance being Fe and incidental impurities. N and Ti satisfy a specified formula, and the total area fraction of martensite and bainite is 95% or more. The number density of bainite grains having an area of 3 ?m2 or more and a carbon concentration of less than 0.7C is 1200 grains/mm2 or less.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: March 12, 2024
    Assignee: JFE STEEL CORPORATION
    Inventors: Yuji Tanaka, Hidekazu Minami, Naoki Takayama, Takako Yamashita
  • Patent number: 6915798
    Abstract: The flexible exothermic medium of this invention is composed of an exothermic agent which generates heat in contact with air, and a water-absorptive polymer and/or a second polymer other than the water absorptive polymer. The mixture thereof is pressed at a pressure of 100-8000 kg/cm2 with alcohol, a cross-linking agent or a plasticizer. This results in producing flexible united mediums. The flexibility of the exothermic medium is also obtained by irradiating it with light or heating the mixture. The exothermic medium thus prepared is so flexible as to fit any curved part the body and has excellent exothermic characteristics compared with the prior art. The heating element using these exothermic mediums is fit for various uses such as thermotherapy, body warmers, cosmetics and the like.
    Type: Grant
    Filed: July 21, 2003
    Date of Patent: July 12, 2005
    Assignee: Ferric, Inc.
    Inventor: Naoki Minami
  • Publication number: 20040069298
    Abstract: The flexible exothermic medium of this invention is composed of an exothermic agent which generates heat in contact with air, and a water-absorptive polymer and/or a second polymer other than the water absorptive polymer. The mixture thereof is pressed at a pressure of 100-8000 kg/cm2 with alcohol, a cross-linking agent or a plasticizer. This results in producing flexible united mediums. The flexibility of the exothermic medium is also obtained by irradiating it with light or heating the mixture.
    Type: Application
    Filed: July 21, 2003
    Publication date: April 15, 2004
    Inventor: Naoki Minami
  • Publication number: 20020020406
    Abstract: The flexible exothermic medium of this invention is composed of an exothermic agent which generates heat in contact with air, and a water-absorptive polymer and/or a second polymer other than the water absorptive polymer. The mixture thereof is pressed at a pressure of 100-8000 kg/cm2 with alcohol, a cross-linking agent or a plasticizer. This results in producing flexible united mediums. The flexibility of the exothermic medium is also obtained by irradiating it with light or heating the mixture.
    Type: Application
    Filed: October 9, 2001
    Publication date: February 21, 2002
    Inventor: Naoki Minami
  • Patent number: 5889196
    Abstract: A gas composition sensor for detecting oxygen, and hydrocarbon group fuel or combustible composition produced after combustion having a zirconia solid electrolyte body, a concentration cell composed of a platinoid metal catalytic detecting electrode and a reference electrode opposite to each other and a sensing element composed of a gas diffusion limiting member coating the detecting electrode, which further comprises a pair of the sensing elements and heaters for setting both of the sensing elements to operating temperatures different from each other, whereby a specified gas component is selectively detected by operating both of the sensing elements so as to have sensitivity coefficients to the specified gas component different from each other.
    Type: Grant
    Filed: January 6, 1997
    Date of Patent: March 30, 1999
    Assignees: Hitachi, Ltd., Hitachi Car Engineering Co., Ltd.
    Inventors: Sadayasu Ueno, Shirou Ouchi, Naoki Minami
  • Patent number: 5580440
    Abstract: A method and apparatus are disclosed for measuring atmospheric pressure in conjunction with an air-fuel ratio sensor of the type comprising a concentration cell with atmospheric air and exhaust electrodes on opposite sides of a solid-state electrolyte having oxygen ion conductivity. During an atmospheric pressure measuring cycle, oxygen ions are pumped from the atmospheric air electrode to the exhaust electrode, in a quantity which is either predetermined at a fixed value, or is sufficient to bring the cell to an equilibrium state. Atmospheric pressure is then calculated from measured emf of the cell, using an experimentally derived functional relationship. In a second embodiment, ions are pumped until a predetermined change of the concentration cell emf is achieved, and atmospheric pressure is determined based on the amount of time required to achieve such change. The atmospheric pressure measuring mode is operated on a time shared basis with the air-fuel ration detection mode.
    Type: Grant
    Filed: October 27, 1995
    Date of Patent: December 3, 1996
    Assignee: Hitachi, Ltd.
    Inventors: Sadayasu Ueno, Norio Hasegawa, Naoki Minami, Kanemasa Sato, Shiro Oouchi
  • Patent number: 5323635
    Abstract: An air fuel ratio detecting arrangement using a diffusion suppressing type air fuel ratio sensor applicable to an air fuel ratio control unit for an internal combustion engine incorporating an atmospheric air pressure correction circuit in a signal processing and outputting device for correcting an output voltage signal processed therein based on a change in atmospheric air pressure which is detected when a predetermined operating condition of an internal combustion engine is satisfied. A secular change correction circuit included in the signal processing and outputting device detects a change in electromotive force of a concentration cell portion of the air fuel ratio sensor when a predetermined rich air fuel ratio is reached and corrects a reference voltage for the air fuel ratio sensor based on the detected change in electromotive force of the concentration cell portion in addition to an air calibration circuit.
    Type: Grant
    Filed: May 28, 1993
    Date of Patent: June 28, 1994
    Assignees: Hitachi, Ltd., Hitachi Automotive Engineering Co., Ltd.
    Inventors: Sadayasu Ueno, Takao Sasayama, Seiko Suzuki, Kanemasa Sato, Shiro Ouchi, Naoki Minami, Norio Hasegawa