Patents by Inventor Tetsuro Horinouchi

Tetsuro Horinouchi 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).

  • Purification of nitrile
    Patent number: 5969175
    Abstract: A method for purifying a nitrile which comprises contacting a nitrile containing an aldehyde with a cation exchange resin carrying a polyamine to remove the aldehyde from the nitrile. The ion exchange resin can be regenerated and reused repeatedly.
    Type: Grant
    Filed: June 13, 1997
    Date of Patent: October 19, 1999
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Kouzo Murao, Katsuo Ishii, Tetsuro Horinouchi