Patents by Inventor Yoshiko Obata

Yoshiko Obata 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).

  • Process for preparing fluorine-containing carboxylic acid ester
    Patent number: 4855487
    Abstract: An improved process for preparing a fluorine-containing carboxylic acid ester useful as an intermediate for producing a fluorine-containing carboxylic acid is disclosed. The process comprises reacting a fluorine-containing alkyl halide with carbon monoxide and an alcohol in the presence of a transition metal catalyst of the Group VIII of the Periodic Table and a base, and provides the desired carbonylated compound in high yield.
    Type: Grant
    Filed: July 10, 1987
    Date of Patent: August 8, 1989
    Assignee: Sagami Chemical Research Center
    Inventors: Takamasa Fuchikami, Hisao Urata, Yoshimitsu Ishii, Yoshiko Obata