Patents by Inventor Ryu Oi

Ryu Oi 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 producing m-hydroxybenzyl alcohol
    Patent number: 4684449
    Abstract: A process for producing m-hydroxybenzyl alcohol which comprises electrolytically reducing m-hydroxybenzoic acid in an acidic aqueous solution at a temperature of 20.degree. to 70.degree. while m-hydroxybenzyl alcohol is present always in the electrolytic solution. The constant presence of m-hydroxybenzyl alcohol is effected by (1) continuously adding m-hydroxybenzoic acid to the electrolytic solution in an amount corresponding to that consumed as the electrolytic reaction proceeds, or (2) by continuously adding m-hydroxybenzoic acid and the acidic aqueous solution to the electrolytic solution.
    Type: Grant
    Filed: November 19, 1986
    Date of Patent: August 4, 1987
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Shinji Takenaka, Ryu Oi, Chitoshi Shimakawa