Patents by Inventor Kouji Matui

Kouji Matui 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 preparing aromatic compounds having chlorinated side chains and method for stabilizing monochloro-side chain aromatic compounds
    Patent number: 5080767
    Abstract: Photochlorination of aromatic compounds having at least one alkyl side chain is carried out in the presence of an alkylene polyamine previously mixed with an aromatic compound having at least one chlorinated side chain whereby side reactions are suppressed.Aromatic compounds having a monochlorinated side chain are stabilized with an alkylene polyamine. Stainless steel apparatuses can be used in both cases.
    Type: Grant
    Filed: April 4, 1990
    Date of Patent: January 14, 1992
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Sinji Ando, Yukio Fukui, Kouji Matui, Takayoshi Masuda