Patents by Inventor Hakuai Inoue

Hakuai Inoue 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).

  • Ultra-fine spherical particles of metal oxide and a method for the preparation thereof
    Patent number: 4842832
    Abstract: Ultra-fine spherical particles of a metal oxide having an average particle diameter of 40 nm or smaller can be prepared by a method in which a vaporizable metal compound is vaporized and decomposed under heating to give ultra-fine particles of a metal oxide followed by immediate cooling down to a temperature at which coalescence of the fine particles are prevented from coalescence. The fine particles have characteristics such as an excellent power of ultraviolet scattering.
    Type: Grant
    Filed: March 21, 1988
    Date of Patent: June 27, 1989
    Assignee: Idemitsu Kosan Company Limited
    Inventors: Hakuai Inoue, Hiroshi Komiyama