Patents by Inventor Junko Umeda

Junko Umeda 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).

  • Amorphous silica and its manufacturing method
    Patent number: 7998448
    Abstract: A production method of amorphous silica comprises a step of preparing organic waste containing silicon oxide as a starting material, a step of immersing the organic waste in a carboxylic acid aqueous solution having a hydroxyl group, a step of washing the organic waste in water, and a step of heating the organic waste in the air atmosphere.
    Type: Grant
    Filed: October 17, 2007
    Date of Patent: August 16, 2011
    Assignees: Kurimoto, Ltd.
    Inventors: Katsuyoshi Kondoh, Yoshisada Michiura, Junko Umeda
  • AMORPHOUS SILICA AND ITS MANUFACTURING METHOD
    Publication number: 20100061910
    Abstract: A production method of amorphous silica comprises a step of preparing organic waste containing silicon oxide as a starting material, a step of immersing the organic waste in a carboxylic acid aqueous solution having a hydroxyl group, a step of washing the organic waste in water, and a step of heating the organic waste in the air atmosphere.
    Type: Application
    Filed: October 17, 2007
    Publication date: March 11, 2010
    Inventors: Katsuyoshi Kondoh, Yoshisada Michiura, Junko Umeda