Patents by Inventor Chiaki Sugiki

Chiaki Sugiki 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 optically active cyclopropane carboxylic acid
    Patent number: 5180671
    Abstract: The present relates to a process for preparing optically active cyclopropane carboxylic acid derivatives of salts thereof represented by the formula (III) ##STR1## wherein X is chlorine atom, bromine atom, methyl group or trifluoromethyl group and R' is hydrogen atom or metal ion, by asymmetrically hydrolyzing cyclopropane carboxylic acid esters having the formula (II) ##STR2## wherein X is as defined above and R is C.sub.1-4 alkyl group or halogen-substituted C.sub.1-4 alkyl group with specific strains of microorganisms or esterase derived therefrom.
    Type: Grant
    Filed: November 30, 1990
    Date of Patent: January 19, 1993
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Kanji Nishizawa, Satoshi Mitsuda, Ryohei Komaki, Masako Sugimoto, Chiaki Sugiki, Yasutaka Ogami, Kazumi Sonoda, Fumitaka Kishimoto
  • Novel microorganism, a novel esterase and method for preparing the same
    Patent number: 4904593
    Abstract: A novel esterase (molecular weight 54,000.+-.2,000) derived from a microorganism belonging to genus Bacilus is extensively utilizable for organic synthetic reaction, especially for asymmetric hydrolysis of ethyl 2,2-dimethyl-3-(2,2-dichlorovinyl)cyclopropane carboxylate (ethyl permethrate), in the same manner as pig liver esterase.The microorganism suitable for production of the above novel esterase is Bacillus sp. DC-1 (FERM BP-1254).
    Type: Grant
    Filed: April 22, 1987
    Date of Patent: February 27, 1990
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Chiaki Sugiki, Kanji Nishizawa, Masako Sugimoto, Kazumi Sonoda, Fumitaka Kishimoto