Patents by Inventor Kunio Okamoto

Kunio Okamoto 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 an alumina catalyst carrier
    Patent number: 4224302
    Abstract: A catalyst carrier high in strength and suitable for use in internal combustion engines is produced by transforming a boehmite into .gamma.-alumina at a high temperature, transforming the .gamma.-alumina into .alpha.-alumina at a high temperature and sintering the .alpha.-alumina, boehmite having been prepared by forming a large number of agglomerates of adequate size from powdered aluminum hydroxide (Al.sub.2 O.sub.3.3H.sub.2 O) and contacting the agglomerates with water vapor at a high temperature and a high pressure to transform the aluminum hydroxide into boehmite.
    Type: Grant
    Filed: March 5, 1979
    Date of Patent: September 23, 1980
    Assignee: Nippon Soken Inc.
    Inventors: Kunio Okamoto, Junichiro Naito, Mitsuru Asano