Patents by Inventor Kazunori Nobuhara

Kazunori Nobuhara 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).

  • Porous silica-carbon composites and a method of producing the same
    Patent number: 9795944
    Abstract: Porous silica-carbon composites are obtained by mixing fine particulate carbon dispersed in water by a surfactant, alkali metal silicate aqueous solution, and mineral acid so as to produce co-dispersion in which silica hydrosol, produced by reaction of the alkali metal silicate and the mineral acid, and the fine particulate carbon are uniformly dispersed, and gelling silica hydrosol, contained in the co-dispersion, and making the co-dispersion into porous bodies. The porous silica-carbon composites are prepared so as to have specific surface area from 20 to 1000 m2/g, pore volume from 0.3 to 2.0 ml/g, and average pore diameter from 2 to 100 nm.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: October 24, 2017
    Assignee: FUJI SILYSIA CHEMICAL LTD.
    Inventors: Mitsuhiro Kamimura, Kazunori Nobuhara, Kanae Nobuhara, Takuya Nobuhara, Mai Nobuhara
  • POROUS SILICA-CARBON COMPOSITES AND A METHOD OF PRODUCING THE SAME
    Publication number: 20150072145
    Abstract: Porous silica-carbon composites are obtained by mixing fine particulate carbon dispersed in water by a surfactant, alkali metal silicate aqueous solution, and mineral acid so as to produce co-dispersion in which silica hydrosol, produced by reaction of the alkali metal silicate and the mineral acid, and the fine particulate carbon are uniformly dispersed, and gelling silica hydrosol, contained in the co-dispersion, and making the co-dispersion into porous bodies. The porous silica-carbon composites are prepared so as to have specific surface area from 20 to 1000 m2/g, pore volume from 0.3 to 2.0 ml/g, and average pore diameter from 2 to 100 nm.
    Type: Application
    Filed: September 6, 2012
    Publication date: March 12, 2015
    Inventors: Mitsuhiro Kamimura, Kazunori Nobuhara
  • Method for refining ultraviolet absorbent, ultraviolet absorbent and cosmetic material
    Publication number: 20060193796
    Abstract: The process for purifying an ultraviolet absorber of the present invention is characterized by including an adsorbent treatment step of bringing the ultraviolet absorber into contact with an absorbent. According to the process, an ultraviolet absorber having a reduced odor, an improved hue and less skin irritation can be obtained.
    Type: Application
    Filed: March 9, 2004
    Publication date: August 31, 2006
    Inventors: Takanori Mizuoka, Yoshiaki Iwamoto, Yoshiaki Takagi, Keiji Ashitaka, Kazunori Nobuhara