Patents by Inventor Chikau Onodera

Chikau Onodera 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: 6657005
    Abstract: A thermoplastic resin composition is formed by mixing (A) 30-84.9 wt. % of a crystalline thermoplastic resin, (B) 15-65 wt. % of a graft copolymer obtained by graft-polymerizing an ethylenically unsaturated monomer onto a rubber trunk polymer having an alkylene oxide group and (C) 0.1-5 wt. % of an anionic surfactant. As a result, it is possible to obtain a non-black thermoplastic resin composition which shows an antistatic property at a level suitable for use as an ESD (electrical static dissipative) and can be colored into arbitrary hues.
    Type: Grant
    Filed: October 18, 2001
    Date of Patent: December 2, 2003
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Naomitsu Nishihata, Shiro Arai, Chikau Onodera, Masahito Tada
  • Patent number: 5580542
    Abstract: Disclosed is an acetyltransferase activity measuring agent which contains an arylamine derivative. As the arylamine derivative, sodium p-aminohippurate can be used preferably. Use of the acetyltransferase activity measuring agent of this invention permits a simple and safe diagnosis of the progress of the pathema of nephritis, which is accompanied by a mesangial proliferative lesion, or renal insufficiency. Furthermore, the scattering of measured values is small, thereby assuring an accurate diagnosis.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: December 3, 1996
    Assignee: Kureha Kagaku Kogyo K.K.
    Inventors: Chikau Onodera, Hiromi Yoshihara, Mikiro Yanaka
  • Patent number: 5168880
    Abstract: A method of heating a tract organ of the living body with high-frequency electric current, includes the step of controlling a flow volume of a coolant supplied into a first electrode so as to be substantially equal to that of a blood which flows in a living body tissue at a portion where the first electrode is disposed while controlling a temperature of the coolant to a temperature range of the living body tissue at the portion, the coolant being an aqueous solution of salts at a predetermined concentration.The method makes it possible to effect safely a hyperthermic treatment.An apparatus for carrying out the method is also disclosed.
    Type: Grant
    Filed: September 19, 1990
    Date of Patent: December 8, 1992
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Akira Sogawa, Tadashi Onuma, Atsushi Yoshihara, Kiyoshi Kitagawa, Chikau Onodera
  • Patent number: 5086786
    Abstract: An electrode device for heating a tumor in an endotract organ by high frequency convergent electric current has a container of a flexible polymeric material provided with thick side wall, a thick bottom wall connected to one end of the side wall and an opening defined by the other end of the side wall. The device further has a deformable electrode member disposed near an inner surface of the thick bottom wall, and a flexible polymeric film fluid-tightly attached to the other end of the thick side wall. A mesh-like member of a flexible polymeric material is disposed between the electrode member and the flexible polymeric film, and has a plurality of first passages leading to a top surface thereof and a bottom surface thereof, and a plurality of second passages each communicating the first passages with each other.
    Type: Grant
    Filed: March 14, 1990
    Date of Patent: February 11, 1992
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Akira Sogawa, Kiyoshi Kitagawa, Chikau Onodera, Tadashi Onuma
  • Patent number: 4961435
    Abstract: A high-frequency capacitive heating electrode device comprises a cap-shaped electrode, a flexible support for supporting the electrode with one end thereof capped with the electrode, a flexible polymer film which surrounds the electrode and forms a gastight space between the support and the flexible polymer film, and passages for respectively introducing and discharging a cooling medium to and from the gastight space. The high-frequency capacitive heating electrode device is disposed in the vicinity of the target portion of a living body to be heated and is useful for the hyperthermia therapy for a cancer of the uterine cervix.
    Type: Grant
    Filed: October 17, 1988
    Date of Patent: October 9, 1990
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaishi
    Inventors: Kiyoshi Kitagawa, Yoshio Hosoi, Akira Sogawa, Chikau Onodera, Tadashi Onuma
  • Patent number: 4617104
    Abstract: The disclosed invention relates to a cell unit for use in observing an electophoresis which utilizes a measurement cell which accommodates a liquid specimen. A pair of conduit elements are used to introduce and discharge the liquid specimen into and from the measurement cell with one of the conduit elements having a flexible tube portion. Also included is a pair of valves for closing a pair of conduit elements with at least one of the valves being utilized as a pinch valve to pinch the flexible tube. A pair of housing elements accommodate a pair of electrodes with the electrodes producing an electric potential gradient in the specimen. Lastly, a pair of diaphragm elements are each disposed between the measurement cell and one of the pair of housing elements in order to separate a space in the measurement cell from the space in the associated housing element.
    Type: Grant
    Filed: December 19, 1983
    Date of Patent: October 14, 1986
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Yoshio Kawai, Kiyoshi Kitagawa, Kazue Endo, Chikau Onodera