Patents by Inventor Takaharu Sasaki

Takaharu Sasaki 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 purifying acetic acid
    Patent number: 5662780
    Abstract: A process for purifying acetic acid which comprises: introducing a feedstock aqueous solution of acetic acid having an acetic acid concentration of from 10 to 50% by weight into an extractor; supplying an extracting medium containing isopropyl acetate in an amount from 0.6 to 3.
    Type: Grant
    Filed: March 6, 1996
    Date of Patent: September 2, 1997
    Assignee: Showa Denko K.K.
    Inventors: Takaharu Sasaki, Masayuki Fujimoto, Takashige Miyanari, Hiroshi Nishino