Patents by Inventor Koichi Aketa

Koichi Aketa 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 preparing an optically active .alpha.-cyano-3-phenoxybenzyl 2-(4-substituted-phenyl)isovalerate
    Patent number: 4321212
    Abstract: A method for preparing an optically active .alpha.-cyano-3-phenoxybenzyl 2-(4-substituted-phenyl)-isovalerate, which consists substantially of or is rich in (S)-.alpha.-cyano-3-phenoxybenzyl (S)-2-(4-substituted-phenyl)isovalerate.
    Type: Grant
    Filed: March 24, 1981
    Date of Patent: March 23, 1982
    Assignee: Sumitomo Chemical Company Limited
    Inventors: Yukio Suzuki, Masachika Hirano, Koichi Aketa