Patents by Inventor Tsutomu Sugeta

Tsutomu Sugeta 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).

  • Method of decomposing polychlorobiphenyls
    Patent number: 6124519
    Abstract: A method of decomposing a polychlorobiphenyl compound-containing material into an unharmful state, wherein the material is treated with a supercritical water containing an alkaline substance at a temperature higher than the critical temperature of water and a pressure higher than the critical pressure of water.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: September 26, 2000
    Assignee: Director-General of Agency of Industrial Science and Technology
    Inventors: Takeshi Sako, Masahito Sato, Tsutomu Sugeta, Katsuto Otake, Makoto Okano
  • Method of decomposing polychlorodibenzo-p-dioxins and/or polychlorodibenzofurans
    Patent number: 5777192
    Abstract: A method of decomposing dioxin compounds, such as polychlorodibenzo-p-dioxins and polychlorodibenzofurans, contained in a waste material into unharmful substances, wherein the waste material is treated with a supercritical water at a temperature higher than the critical temperature of water and a pressure higher than the critical pressure of water.
    Type: Grant
    Filed: March 21, 1997
    Date of Patent: July 7, 1998
    Assignee: Director-General of Agency of Industrial Science and Technology
    Inventors: Takeshi Sako, Masahito Sato, Tsutomu Sugeta, Katsuto Otake, Masayuki Tsugumi
  • Process for extracting lipids from mortierella genus fungi
    Patent number: 4857329
    Abstract: Lipids containing gamma-linolenic acid are extracted from cells of Mortierella genus fungi by first grinding the cells in the presence or absence of a hot alcoholic solvent, and then extracting the alcohol-treated ground cells with a solvent in a supercritical state, or a mixture of a solvent in a supercritical state with a lower aliphatic alcohol or a lower aliphatic hydrocarbon.
    Type: Grant
    Filed: August 1, 1986
    Date of Patent: August 15, 1989
    Assignee: Agency of Industrial Science & Technology
    Inventors: Takeshi Sako, Toshihiro Yokochi, Masahito Sato, Osamu Suzuki, Toshikatsu Hakuta, Tsutomu Sugeta, Noriaki Nakazawa