Patents by Inventor Hiroshi Takahoso

Hiroshi Takahoso 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).

  • Method for producing aromatic iodides
    Patent number: 7514589
    Abstract: The present invention is directed to provide a means, which enables production of a product superior in color tone in high yield by using an easy-to-handle and highly safe technique, in a method for producing an aromatic iodide. The present invention relates to a method for producing an aromatic iodide, characterized in that an aromatic compound and an active iodinating agent are fed into a flow reactor equipped with a high-speed mixer and hydrogen atom on the aromatic ring of said aromatic compound is continuously substituted by iodine atom.
    Type: Grant
    Filed: December 28, 2005
    Date of Patent: April 7, 2009
    Assignees: Nippoh Chemicals Co., Ltd., Kyoto University
    Inventors: Koji Midorikawa, Hiroshi Takahoso, Junichi Yoshida, Seiji Suga
  • Method for Producing Aromatic Iodides
    Publication number: 20080146853
    Abstract: The present invention is directed to provide a means, which enables production of a product superior in color tone in high yield by using an easy-to-handle and highly safe technique, in a method for producing an aromatic iodide. The present invention relates to a method for producing an aromatic iodide, characterized in that an aromatic compound and an active iodinating agent are fed into a flow reactor equipped with a high-speed mixer and hydrogen atom on the aromatic ring of said aromatic compound is continuously substituted by iodine atom.
    Type: Application
    Filed: December 28, 2005
    Publication date: June 19, 2008
    Applicants: NIPPOH CHEMICALS CO., LTD., KYOTO UNIVERSITY
    Inventors: Koji Midorikawa, Hiroshi Takahoso, Junichi Yoshida, Seiji Suga
  • Method for production of 3-cyano-3,5,5-trimethyl cyclohexanone
    Patent number: 5179221
    Abstract: A method for the production of 3-cyano-3,5,5-trimethyl cyclohexanone by the reaction of isophorone with hydrogen cyanide in the presence of a quaternary ammonium salt or quaternary phosphonium salt and a basic compound as a catalyst in the form dissolved or dispersed in water or in the absence of water, which method comprises effecting said reaction by using said quaternary ammonium salt or quaternary phosphonium salt in an amount in the range of from 0.001 to 0.1 mol per mol of isophorone and said basic compound and in an amount in the range of from 0.5 to 3.0 mols per mol of said quaternary ammonium salt or quaternary phosphonium salt and, when water is used, using water in an amount in the range of 0.1 to 25% by weight based on the amount of isophorone and introducing hydrogen cyanidehydrocyanic acid at a ratio in the range of from 0.6 to 1.0 mol per mol of isophorone at a temperature in the range of from 90.degree. to 140.degree. C.
    Type: Grant
    Filed: July 9, 1991
    Date of Patent: January 12, 1993
    Assignee: Nippon Chemicals Co., Ltd.
    Inventors: Hiroshi Takahoso, Norio Takahashi, Koji Midorikawa, Toshiyasu Sato