Patents by Inventor Hiroshi Sugizawa

Hiroshi Sugizawa 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).

  • Production process for aromatic compounds
    Patent number: 5760280
    Abstract: A process for producing aromatic compounds comprises the step of carrying out a reaction between an aromatic carboxylic acid and a polyfluorobenzonitrile, thus forming an aromatic nitrile and a polyfluorobenzene. This process can produce the aromatic compounds with few problems with respect to worker safety and at a low cost when compared with conventional processes, and can convert the starting materials for the reaction into useful substances with ease and little waste and in a high yield.
    Type: Grant
    Filed: May 16, 1997
    Date of Patent: June 2, 1998
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Isamu Maeda, Hiroshi Sugizawa, Noboru Saito