Patents by Inventor Takamitsu Utsukihara

Takamitsu Utsukihara 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 manufacturing isoxazole derivative or dihydroisoxazole derivative
    Patent number: 7495107
    Abstract: There is provided with a method for manufacturing an isoxazole derivative at a high yield and without discharging waste products, and a novel isoxazole derivative. An isoxazole derivative expressed by Formula (8) is produced by reacting a 1-alkyne compound expressed by Formula (7) with iron(III) nitrate in the presence of acetone or acetophenone: (where R1 is an alkyl, cycloalkyl, phenyl, or other such group); and (where R2 is a methyl or a phenyl).
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: February 24, 2009
    Assignee: Rikkyo Gakuin
    Inventors: C. Akira Horiuchi, Ken-ichi Itoh, Noriko Nakazato, Hideo Iwai, Takamitsu Utsukihara, Wen Chai
  • Method for manufacturing isoxazole derivative or dihydroisoxazole derivative
    Publication number: 20060247288
    Abstract: There is provided with a method for manufacturing an isoxazole derivative at a high yield and without discharging waste products, and a novel isoxazole derivative. An isoxazole derivative expressed by Formula (8) is produced by reacting a 1-alkyne compound expressed by Formula (7) with iron(III) nitrate in the presence of acetone or acetophenone: (where R1 is an alkyl, cycloalkyl, phenyl, or other such group); and (where R2 is a methyl or a phenyl).
    Type: Application
    Filed: October 28, 2005
    Publication date: November 2, 2006
    Inventors: C. Horiuchi, Ken-ichi Itoh, Noriko Nakazato, Hideo Iwai, Takamitsu Utsukihara, Wen Chai
  • L-ascorbic acid-2-phosphoric acid potassium crystal and method for producing the same
    Patent number: 6271397
    Abstract: A high-purity L-ascorbic acid-2-phosphoric acid potassium crystal having excellent stability, and a method for simply producing the high-purity L-ascorbic acid-2-phosphoric acid potassium in a high yield by adding dropwise a solution containing L-ascorbic acid-2-phosphoric potassium to methanol or simultaneously mixing methanol and a solution containing L-ascorbic acid-2-phosphoric acid potassium. By the production method of the present invention, high-purity L-ascorbic acid-2-phosphoric acid potassium crystal having excellent stability can be simply produced in a high yield. The L-ascorbic acid-2-phosphoric acid potassium crystal obtained by the production method of the present invention is used for feedstuff, cosmetic materials, medical products, food additive and the like.
    Type: Grant
    Filed: June 7, 1999
    Date of Patent: August 7, 2001
    Assignee: Showa Denko Kabushiki Kaisha
    Inventors: Kazuhiro Oomori, Yuji Kobayashi, Takamitsu Utsukihara, Sumio Soya