Patents by Inventor Kaoru Nogawa

Kaoru Nogawa 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).

  • Agent and method for decontaminating soil, groundwater or sediment contaminated with hexavalent chromium
    Patent number: 7455774
    Abstract: It is an objective of the present invention to provide a decontaminant capable of efficiently and rapidly decontaminating soil, groundwater or sediment contaminated with hexavalent chromium, and a decontamination method utilizing the same. By adding at least one of iron (0) and ferrous iron, and a microbial biostimulant of at least one member selected from the group consisting of yeast extract, inactive yeast, active yeast and peptone to soil, groundwater or sediment contaminated with hexavalent chromium. Hexavalent chromium is chemically and biologically reduced efficiently, and iron reducing microorganisms are propagated and activated to sustain reducing power of the added iron over a long period of time.
    Type: Grant
    Filed: August 4, 2004
    Date of Patent: November 25, 2008
    Assignee: Ecocycle Corporation
    Inventors: Shrihari Chandraghatgi, Shingo Maeda, Kaoru Nogawa, Hideki Himi
  • Agent and method for decontaminating soil, groundwater or sediment contaminated with hexavalent chromium
    Publication number: 20070051676
    Abstract: It is an objective of the present invention to provide a decontaminant capable of efficiently and rapidly decontaminating soil, groundwater or sediment contaminated with hexavalent chromium, and a decontamination method utilizing the same. By adding at least one of iron (0) and ferrous iron, and a microbial biostimulant of at least one member selected from the group consisting of yeast extract, inactive yeast, active yeast and peptone to soil, groundwater or sediment contaminated with hexavalent chromium. Hexavalent chromium is chemically and biologically reduced efficiently, and iron reducing microorganisms are propagated and activated to sustain reducing power of the added iron over a long period of time.
    Type: Application
    Filed: August 4, 2004
    Publication date: March 8, 2007
    Applicant: ECOCYCLE CORPORATION
    Inventors: Shrihari Chandraghatgi, Shingo Maeda, Kaoru Nogawa, Hideki Himi