Patents by Inventor Kazuhiko Kamaya

Kazuhiko Kamaya 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 purifying &bgr;-phenylethyl alcohol
    Patent number: 6207867
    Abstract: A method for purifying &bgr;-phenylethyl alcohol, comprising an extractive distillation process in which crude &bgr;-phenylethyl alcohol is extractive-distilled using an extraction solvent (A), and an extracting process in which the extraction solvent (A) after use in the extractive distillation process is extracted using other extraction solvent (B).
    Type: Grant
    Filed: April 5, 2000
    Date of Patent: March 27, 2001
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Kazuhiko Kamaya, Yoshimitsu Onodera