Patents by Inventor Masaoki Ouchi

Masaoki Ouchi 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).

  • Supply system of petroleum heavy oil containing magnetic fine particles
    Patent number: 5543041
    Abstract: The present invention relates to a supply system for pre-treating a petroleum distillation residual oil to be fed to a hydrogenation apparatus. In order to remove iron fine particles having a particle size of less than 25.mu. in the feed oil which could be not removed in the prior art, by constituting a system comprising a heater for heating the feed oil to a given temperature by heat exchange with a high temperature bottom oil of a fractionating tower after hydrogenation treatment of the feed oil, a filter equipped with a back washing mechanism for filtering solid materials in the feed oil after heating, and a high gradient magnetic separator for magnetically separating magnetic iron fine particles having a particle size of less than 25.mu. contained in the feed oil.
    Type: Grant
    Filed: July 6, 1994
    Date of Patent: August 6, 1996
    Assignees: Nippon Oil Company, Ltd., Nippon Petroleum Refining Company, Ltd.
    Inventors: Hajime Okazaki, Manabu Kazato, Masaoki Ouchi, Haruki Nagano, Masaru Ushio, Kozo Kamiya