Patents by Inventor Nobuharu Takai

Nobuharu Takai 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).

  • Electrode for electrochemical detectors
    Patent number: 5096560
    Abstract: An electrode for a coulometric type of electrochemical detector, comprising a formed product of a porous, graphitic carbon having the following physical properties (1), (2) and (3):(1) an average pore diameter of 0.1 to 50 .mu.m,(2) a specific surface area of 10 m.sup.2 /g or more, and(3) an average interlaminar spacing (d.sub.002) of carbon of 3.35 to 3.42 .ANG., as determined by X-ray diffraction analysis.
    Type: Grant
    Filed: May 29, 1990
    Date of Patent: March 17, 1992
    Assignee: Mitsubishi Petrochemical Co., Ltd.
    Inventors: Nobuharu Takai, Yoshiteru Kageyama, Yoshiaki Sawada, Akira Yoshida
  • Prosthetic body for bone substitute and a method for the preparation thereof
    Patent number: 4846838
    Abstract: The inventive prosthetic body for bone substitute is a sintered body of hydroxyapatite and characterized by the open pore structure with a pore diameter in a specified range forming a porosity of 20 to 40% and a bending strength of at least 100 kg/cm.sup.2. The sintered body can be prepared by blending powders of hydroxyapatite and a thermally decomposable substance, e.g. crystalline cellulose, each having a specified particle size distribution, in a specified proportion and shaping and sintering the powder blend.
    Type: Grant
    Filed: June 18, 1987
    Date of Patent: July 11, 1989
    Assignee: TDK Corporation
    Inventors: Nobuharu Takai, Hiroyasu Noma, Shoichi Wakabayashi, Susumu Takata
  • Composite for decomposing and adsorbing urea dissolved in liquid
    Patent number: 4721652
    Abstract: A composite comprising a core of urease-containing particles covered with fine zeolite powders for decomposing urea dissolved in a liquid and adsorbing a product resulting from said decomposition.
    Type: Grant
    Filed: January 21, 1986
    Date of Patent: January 26, 1988
    Assignee: Catalysts & Chemicals Industries Co., Ltd.
    Inventors: Nobuharu Takai, Sumio Saitoh