Patents by Inventor Hirohisa Katoh

Hirohisa Katoh 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: 6503069
    Abstract: The scroll-type compressor with an integrated motor of the present invention comprises a housing 1, a fixed scroll 21 fixed to the housing 1, a movable scroll 31 installed eccentrically to the fixed scroll 21, and a motor portion 5, and is characterized in that the housing 1 comprises a high pressure chamber 25 to which compressed gases are supplied, a first cooling chamber 26′ installed contiguous to the high pressure chamber 25 and to which cooling fluid is supplied, a second cooling chamber 42 which cools the motor portion 5 and is supplied with the cooling fluid, and a fluid passage 7 that connects the first cooling chamber 26′ and the second cooling chamber 42 and passes the cooling fluid in the direction from the first cooling chamber 26′ to the second cooling chamber 42.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: January 7, 2003
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Takahiro Moroi, Ryuta Kawaguchi, Tsutomu Nasuda, Koji Kawamura, Masato Sowa, Tatsuyuki Hoshino, Yoshiyuki Nakane, Hidehito Kubo, Hirohisa Katoh, Daisuke Satoh
  • Patent number: 6428915
    Abstract: A fuel cell system having a fuel cell, a gas compressor arranged to compress process air and connected to the fuel cell via an air-supply line to supply the compressed process air, a recovery unit connected to the fuel cell via an exhaust gas line, a liquid-gas separating unit arranged in the exhaust gas line to separate produced water from an exhaust gas and to store the separated produced water in a water storing vessel portion thereof, and a water-supply line extending from the bottom of the water storing vessel portion to a water-supply port provided for the gas compressor to supply the gas compressor with the produced water under the pressure of the exhaust gas applied to the produced water stored in the water storing vessel.
    Type: Grant
    Filed: September 23, 1999
    Date of Patent: August 6, 2002
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Takashi Ban, Hirohisa Katoh, Masahiko Kimbara, Hidehito Kubo
  • Publication number: 20020071779
    Abstract: The scroll-type compressor with an integrated motor of the present invention comprises a housing 1, a fixed scroll 21 fixed to the housing 1, a movable scroll 31 installed eccentrically to the fixed scroll 21, and a motor portion 5, and is characterized in that the housing 1 comprises a high pressure chamber 25 to which compressed gases are supplied, a first cooling chamber 26′ installed contiguous to the high pressure chamber 25 and to which cooling fluid is supplied, a second cooling chamber 42 which cools the motor portion 5 and is supplied with the cooling fluid, and a fluid passage 7 that connects the first cooling chamber 26′ and the second cooling chamber 42 and passes the cooling fluid in the direction from the first cooling chamber 26′ to the second cooling chamber 42.
    Type: Application
    Filed: September 26, 2001
    Publication date: June 13, 2002
    Inventors: Takahiro Moroi, Ryuta Kawaguchi, Tsutomu Nasuda, Koji Kawamura, Masato Sowa, Tatsuyuki Hoshino, Yoshiyuki Nakane, Hidehito Kubo, Hirohisa Katoh, Daisuke Satoh
  • Patent number: 6361890
    Abstract: A fuel cell system includes a fuel cell, a motor, a scroll type compressor, connected to the air feeding pipe of the fuel cell and a scroll type regenerator connected to the air exhaust pipe of the fuel cell. The movable scrolls of the compressor and the regenerator are coupled to opposite ends of the motor output shaft in symmetry with each other. A pressure ratio of the regenerator is selected to be smaller than that of the compressor by an amount corresponding to a pressure loss of the exhaust gas across the fuel cell, so that the rotation of the regenerator never transmits a negative torque to the motor output shaft MC. Therefore, the regenerator can efficiently provide power assistance to the compressor.
    Type: Grant
    Filed: November 8, 1999
    Date of Patent: March 26, 2002
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Takashi Ban, Hirohisa Katoh, Masahiko Kimbara, Hidehito Kubo
  • Patent number: 6350536
    Abstract: A fuel cell system including a fuel cell having an air feeding tube, an air discharging tube and a fuel feeding tube, the air discharged from the fuel cell through the air discharging tube containing water. The system also includes a compressor, a water separation tank, and a water supply passage for supplying water collected in the water separation tank to the compressor. When the system is to be stopped, the water supply passage is first blocked while the compressor is operating. The humidity or the temperature of the process air is then detected, and the compressor is stopped when the detected humidity is lower than a predetermined value, or when the detected temperature is higher than a predetermined value.
    Type: Grant
    Filed: October 6, 1999
    Date of Patent: February 26, 2002
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Takashi Ban, Toshiro Fujii, Hirohisa Katoh, Ryuta Kawaguchi
  • Patent number: 6312843
    Abstract: This invention relates to a fuel cell apparatus in which a discharge gas having a pressure energy even after an oxygen has been consumed at the fuel cell is expanded at an expander to collect the pressure energy in the discharge gas as a mechanical energy for assisting driving of a compressor. A clutch (20) is disposed between the electric motor (16) and the expander (15) for connecting/interrupting the expander with/from the electric motor, and a control means (21, 22) for controlling the clutch is provided. The control means detects a pressure in the gas discharge tube (13) between the fuel cell (10) and the expander (15), to interrupt the clutch as long as a detected pressure is lower than a predetermined value, and to connect the clutch when the detected pressure becomes higher than the predetermined value.
    Type: Grant
    Filed: September 10, 1999
    Date of Patent: November 6, 2001
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Masahiko Kimbara, Takashi Ban, Hidehito Kubo, Hirohisa Katoh
  • Patent number: 6270744
    Abstract: A diagnostic agent for angiopathic diseases containing a monoclonal antibody against human smooth muscle myosin or active fragments of the antibody labeled with a radioactive isotope; a kit thereof; and a method of diagnostic imaging for angiopathic diseases by using the same. The invention permits the diagnostic imaging of angiopathic diseases such as dissecting aortic aneurysm and angiitis and the specification of the region affected by these diseases.
    Type: Grant
    Filed: January 4, 1999
    Date of Patent: August 7, 2001
    Assignee: Yamasa Corporation
    Inventors: Tsutomu Iwasaki, Ryozo Nagai, Hirohisa Katoh
  • Patent number: 6124052
    Abstract: A solid polymer electrolyte type fuel cell system having a reduced size and weight, which exhibits an improved efficiency. To supply reaction gas to an anode or a cathode, a water lubricated type compressor is employed with the following operational advantages. The face pressure of sliding faces of the water lubricated type compressor, that is the compression ratio and number of revolutions thereof, can be greatly improved, as compared to the conventional oil free type compressor. The compression efficiency is improved by reducing of leakage of reaction gas between the sliding faces. No oil film is formed so as not to deteriorate the battery performance. The size of the water lubricated type compressors can be greatly reduced to about one-third to a half of the conventional oil free type compressor. In addition, the improvement of the compression efficiency and reduction of the friction loss result in a great reduction of driving power.
    Type: Grant
    Filed: July 9, 1998
    Date of Patent: September 26, 2000
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Hirohisa Katoh, Hidehito Kubo, Toshiro Fujii
  • Patent number: 5908757
    Abstract: By measuring smooth muscle myosin heavy chain in the blood of a patient using an antibody to the smooth muscle myosin heavy chain, dissecting aortic aneurysm can be diagnosed very easily and rapidly without any special equipment.
    Type: Grant
    Filed: April 10, 1997
    Date of Patent: June 1, 1999
    Assignee: Yamasa Corporation
    Inventors: Hirohisa Katoh, Ryozo Nagai