Patents by Inventor Norihide Enomoto

Norihide Enomoto 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 pyromellitic dianhydride
    Patent number: 4925957
    Abstract: A catalyst comprising an inert support that carries on it vanadium oxide, sodium oxide and molybdenum oxide in predetermined amounts, at least one additional component in a predetermined amount which is selected from among chromium oxide, manganese oxide, niobium oxide and titanium oxide is capable of producing pyromellitic dianhydride in high yield from inexpensive durene over a broad optimal temperature range while suppressing the generation of heat in the catalyst bed.
    Type: Grant
    Filed: February 22, 1989
    Date of Patent: May 15, 1990
    Assignee: Kawasaki Steel Corp.
    Inventors: Norihide Enomoto, Yoshihiro Naruse