Patents by Inventor Ayu Onishi

Ayu Onishi 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).

  • Metal fine particles and manufacturing method therefor
    Patent number: 8512436
    Abstract: There is provided a method for efficiently manufacturing metal nano particles without condensing laser beams by using a lens etc. In this method, first, metallic foil pieces, which are a starting material, are dispersed in a dispersion liquid. Next, laser beams are irradiated directly to the metallic foil pieces without providing a condensing means, by which many metal fine particles are yielded. The particle diameters of the metal fine particles obtained can be controlled to sizes from nano particles to submicron particles by utilizing the relationship between the shape (especially thickness) of the metallic foil piece which is a starting material and the absorbed energy of the laser beam.
    Type: Grant
    Filed: August 22, 2005
    Date of Patent: August 20, 2013
    Assignees: Kyoto University, Fukuda Metal Foil & Powder Co., Ltd., Hitachi Chemical Company, Ltd.
    Inventors: Mitsuo Kawasaki, Osamu Kajita, Ayu Onishi, Sachiko Masuoka, Takafumi Iwamoto, Eitaro Yasuda
  • Metal Fine Particles and Manufacturing Method Therefor
    Publication number: 20090053523
    Abstract: There is provided a method for efficiently manufacturing metal nano particles without condensing laser beams by using a lens etc. In this method, first, metallic foil pieces, which are a starting material, are dispersed in a dispersion liquid. Next, laser beams are irradiated directly to the metallic foil pieces without providing a condensing means, by which many metal fine particles are yielded. The particle diameters of the metal fine particles obtained can be controlled to sizes from nano particles to submicron particles by utilizing the relationship between the shape (especially thickness) of the metallic foil piece which is a starting material and the absorbed energy of the laser beam.
    Type: Application
    Filed: August 22, 2005
    Publication date: February 26, 2009
    Inventors: Mitsuo Kawasaki, Osamu Kajita, Ayu Onishi, Sachiko Masuoka, Takafumi Iwamoto, Eitaro Yasuda