Patents by Inventor Kyohko Kobayashi

Kyohko Kobayashi 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 aromatic hydroxy compound
    Patent number: 5322946
    Abstract: An industrially useful process for the production of an aromatic hydroxy compound which comprises reacting an aromatic sulfonic acid alkali metal salt and/or an aromatic sulfonic acid with an alkali metal hydroxide in the presence of a surface active agent, wherein the reaction is effected by uniformly dispersing these-materials in a reaction medium selected from aliphatic, alicyclic and aromatic hydrocarbons. By employing this process, the product can be obtained with high purity, high yield and high selectivity using a minimum amount of the alkali metal hydroxide.
    Type: Grant
    Filed: January 8, 1993
    Date of Patent: June 21, 1994
    Assignee: Kawasaki Steel Corporation
    Inventors: Masato Takagi, Yoshihiro Naruse, Akinori Matsuura, Kyohko Kobayashi