Patents by Inventor Masami Orisaku

Masami Orisaku 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).

  • Process for preparing silicon nitride, silicon carbide or fine powdery mixture thereof
    Patent number: 4613490
    Abstract: Fine silicon nitride powders, fine silicon carbide powders, or fine powdery mixture of silicon nitride and silicon carbide are prepared by vapor phase reaction of an aminosilane compound, a cyanosilane compound, a silazane compound, an alkoxysilane compound or a siloxane compound and heat treatment of the resulting fine powders in a non-oxidizing gas atmosphere.
    Type: Grant
    Filed: May 2, 1985
    Date of Patent: September 23, 1986
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Takashi Suzuki, Takamasa Kawakami, Rieko Nakano, Takeshi Koyama, Kansei Izaki, Akira Mori, Masami Orisaku
  • Fine amorphous powder and process for preparing fine powdery mixture of silicon nitride and silicon carbide
    Patent number: 4594330
    Abstract: Fine spherical amorphous powder represented by the general formula:SiCxNyHzwherein 0.1<x<2.0, 0.1<y<1.5 and 0<z<4, is prepared by vapor phase oxidation of organosilicon compound substantially free from halogen atoms and oxygen atoms. An ultimately crystalline, uniform and fine powder of silicon nitride and silicon carbide is prepared by heat treatment of the fine spherical amorphous powder. The powder and the crystalline uniform, and fine powder are used as raw materials for composite ceramics and as functional materials for solar cell.
    Type: Grant
    Filed: March 15, 1985
    Date of Patent: June 10, 1986
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Takashi Suzuki, Takamasa Kawakami, Takeshi Koyama, Masami Orisaku, Kansei Izaki, Rieko Nakano, Akira Mori
  • Process for producing p-cresol
    Patent number: 4465872
    Abstract: p-Cresol is produced in one step by direct oxidation of p-tolualdehyde with a peroxide in formic acid as a solvent while keeping 3 to 15% by weight of water in formic acid on the basis of formic acid and a reaction temperature in a range of 50.degree. to 150.degree. C.
    Type: Grant
    Filed: June 23, 1982
    Date of Patent: August 14, 1984
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Takashi Suzuki, Shoichiro Hashimoto, Masami Orisaku, Rieko Nakano