Patents by Inventor Kaoru Ishizuka

Kaoru Ishizuka 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).

  • Construction material and method
    Patent number: 6589654
    Abstract: Construction material from granular material reclaimed from the ash of a municipal waste combustor wherein the ash is subjected to sorting and separating recovered metals, the granular material including particles having a maximum particle diameter of 5 to 40 mm, a U-coefficient of 10 or more, and ignition loss of 10% or less in weight and being subjected to at least one heavy metal immobilization agent, preferably phosphoric acid; and a second heavy metal immobilization agent consisting of ferrous sulfate. The ash is further subjected to drying before subjecting the ash to the at least one heavy metal immobilization agent. The ash is further subjected to mulling the material after subjecting the ash to the at least one heavy metal immobilization agent.
    Type: Grant
    Filed: October 10, 1997
    Date of Patent: July 8, 2003
    Assignee: Duos Engineering (USA), Inc.
    Inventors: Gianni B. Arcaini, Gary M. Carraux, William R. Gibbes, Takemoto Yashiro, Takanori Hirao, Kaoru Ishizuka
  • Process for treating sludge and system for the same
    Patent number: 5624550
    Abstract: Sludge which is supplied from an untreated sludge tank 3 and diluting water from a diluting water supply facility 14 is charged into a continuous kneading mixer 12 for diluting the sludge to make the specific weight of the sludge 1.15 to 1.35. The diluted sludge is supplied to a dehydrating machine 25 in accordance with the capacity of the used dehydrating machine 25. The diluted sludge is firstly added with an inorganic flocculating agent G and is mixed in a first blender 24A and is then added with a high molecular flocculating agent G2 and is mixed in a second blender 24B. Thereafter, the sludge is supplied to a belt press dehydrating machine 25 in which it is subjected to a dehydrating treatment.
    Type: Grant
    Filed: August 10, 1995
    Date of Patent: April 29, 1997
    Assignees: Chemical Grouting Co., Ltd., Front Engineering Co., Ltd., Kurita Water Industries Ltd., Shoeisangyo Corporation
    Inventors: Masahiro Iji, Masami Yoda, Shin Suzuki, Kaoru Ishizuka, Sotoo Kubo, Isao Yamaki, Toshikuni Hashimoto
  • Process for treating sludge and system for the same
    Patent number: 5462672
    Abstract: Sludge which is supplied from an untreated sludge tank 3 and diluting water from a diluting water supply facility 14 is charged into a continuous kneading mixer 12 for diluting the sludge to make the specific weight of the sludge 1.15 to 1.35. The diluted sludge is supplied to a dehydrating machine 25 in accordance with the capacity of the used dehydrating machine 25. The diluted sludge is firstly added with an inorganic flocculating agent G and is mixed in a first blender 24A and is then added with a high molecular flocculating agent G2 and is mixed in a second blender 24B. Thereafter, the sludge is supplied to a belt press dehydrating machine 25 in which it is subjected to a dehydrating treatment.
    Type: Grant
    Filed: August 12, 1993
    Date of Patent: October 31, 1995
    Assignees: Chemical Grouting Co., Ltd., Front Engineering Co. Ltd., Kurita Water Industries Ltd., Shoesangyo Corporation
    Inventors: Masahiro Iji, Masami Yoda, Shin Suzuki, Kaoru Ishizuka, Sotoo Kubo, Isao Yamaki, Toshikuni Hashimoto