Patents by Inventor Katsuhiko TOMOOKA

Katsuhiko TOMOOKA 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 substance, optically active substance, method for producing chiral molecule, and chiral molecule
    Patent number: 11603337
    Abstract: Provided is a method for producing an optically active substance, the method including an asymmetric induction, wherein an asymmetry inducer is allowed to act on a chiral molecule having a half-life of enantiomeric excess of shorter than 10 hours, thereby increasing abundance of one enantiomer of the chiral molecule. According to this method, one enantiomer of a chiral molecule that is susceptible to racemization can be selectively and efficiently obtained.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: March 14, 2023
    Assignees: DAICEL CORPORATION, KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
    Inventors: Katsuhiko Tomooka, Kazunobu Igawa
  • METHOD FOR PRODUCING OPTICALLY ACTIVE SUBSTANCE, OPTICALLY ACTIVE SUBSTANCE, METHOD FOR PRODUCING CHIRAL MOLECULE, AND CHIRAL MOLECULE
    Publication number: 20200087227
    Abstract: Provided is a method for producing an optically active substance, the method including an asymmetric induction, wherein an asymmetry inducer is allowed to act on a chiral molecule having a half-life of enantiomeric excess of shorter than 10 hours, thereby increasing abundance of one enantiomer of the chiral molecule. According to this method, one enantiomer of a chiral molecule that is susceptible to racemization can be selectively and efficiently obtained.
    Type: Application
    Filed: May 16, 2018
    Publication date: March 19, 2020
    Applicants: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, DAICEL CORPORATION
    Inventors: Katsuhiko TOMOOKA, Kazunobu IGAWA