Patents by Inventor Takashi Kameo

Takashi Kameo 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).

  • Aromatic compound nitration catalyzed by aromatic sulfonic acid supported on solid carrier
    Patent number: 3965200
    Abstract: In nitrating an aromatic compound having at least one of ortho-para orientation substituents, a process which is characterized in that nitration is carried out in the presence of an aromatic sulfonic acid supported on a solid carrier in a weight ratio of 1 : 1 to 1 : 20.
    Type: Grant
    Filed: July 13, 1972
    Date of Patent: June 22, 1976
    Assignee: Osaka City
    Inventors: Osamu Manabe, Takashi Kameo