Patents by Inventor Kimiko Ishikawa

Kimiko Ishikawa 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).

  • Cleansing processing agent, cleansing method employing the agent and a molded structural member
    Patent number: 7176175
    Abstract: A cleansing processing agent that is able to remove harmful substances contained in a variety of waste materials and a cleansing method are disclosed. Specifically, there is disclosed a cleansing processing agent containing a polymer having at least one of styrene or conjugate diene and acrylonitrile as constituent unit and into which are introduced ionic groups. This cleansing processing agent is contacted with a material for processing containing harmful substances contained in the material for processing for removing the harmful substances. The waste plastics can be used effectively, while a modified product obtained on chemical modification of the plastics is useful for suppressing environmental destruction caused by leakage of the harmful substances contained in the waste materials.
    Type: Grant
    Filed: May 20, 2004
    Date of Patent: February 13, 2007
    Assignee: Sony Corporation
    Inventors: Yasuhito Inagaki, Yasutoshi Kawate, Kimiko Ishikawa, Hiroyuki Nagasawa
  • Cleansing processing agent, cleansing method employing the agent and a molded structural member
    Publication number: 20040220071
    Abstract: A cleansing processing agent that is able to remove harmful substances contained in a variety of waste materials and a cleansing method are disclosed. Specifically, there is disclosed a cleansing processing agent containing a polymer having at least one of styrene or conjugate diene and acrylonitrile as constituent unit and into which are introduced ionic groups. This cleansing processing agent is contacted with a material for processing containing harmful substances contained in the material for processing for removing the harmful substances. The waste plastics can be used effectively, while a modified product obtained on chemical modification of the plastics is useful for suppressing environmental destruction caused by leakage of the harmful substances contained in the waste materials.
    Type: Application
    Filed: May 20, 2004
    Publication date: November 4, 2004
    Inventors: Yasuhito Inagaki, Yasutoshi Kawate, Kimiko Ishikawa, Hiroyuki Nagasawa