Patents by Inventor Kozo Sonobe

Kozo Sonobe 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).

  • Slag treatment material
    Patent number: 5187126
    Abstract: A method for improving the characteristics of fused slag material is disclosed. This improved method results in a fused slag having resistance against pulverization at the cooling process or generation of yellowish turbid water due to contact of slag lumps with rain water, this method characterized by forming a slag treatment material by rough crushing a substantially dehydrated heat-treated material containing boron, and adding that slag treatment material to molten slag.
    Type: Grant
    Filed: November 20, 1990
    Date of Patent: February 16, 1993
    Assignee: Nippon Chemical Industrial Co., Ltd.
    Inventors: Kozo Sonobe, Takashi Fukuzawa, Kohsuke Takeuchi, Tatushi Tabata, Hiroshi Fukuoka, Kunio Hisamatsu, Makoto Katamura
  • Modified steel slag and method of manufacturing the same
    Patent number: 4882303
    Abstract: A steel slag or iron slag which is a by-product generated at the time of steel or iron metallurgy and a method of manufacturing the same are disclosed. This slag is characterized in that it contains at least 0.15 wt % of boron component in the form of B.sub.2 O.sub.3 and has resistance against degradation in the fused slag cooling-down process and against generation of yellowish turbid water at the time of contact of slag with rain water.
    Type: Grant
    Filed: August 1, 1988
    Date of Patent: November 21, 1989
    Assignee: Nippon Chemical Industrial Co., Ltd.
    Inventors: Kozo Sonobe, Takashi Fukuzawa, Kohsuke Takeuchi, Tatushi Tabata, Hiroshi Fukuoka, Kunio Hisamatsu, Makoto Katamura
  • Slag treatment material
    Patent number: RE34912
    Abstract: A method for improving the characteristics of fused slag material is disclosed. This improved method results in a fused slag having resistance against pulverization at the cooling process for generation of yellowish turbid water due to contact of slag lumps with rain water, this method characterized by forming a slag treatment material by rough crushing a substantially dehydrated heat-treated material containing boron, and adding that slag treatment material to molten slag.
    Type: Grant
    Filed: September 21, 1993
    Date of Patent: April 18, 1995
    Assignee: Nippon Chemical Industrial Co., Ltd.
    Inventors: Kozo Sonobe, Takashi Fukuzawa, Kohsuke Takeuchi, Tatushi Tabata, Hiroshi Fukuoka, Kunio Hisamatsu, Makoto Katamura