Patents by Inventor Hitomi Yanagi

Hitomi Yanagi 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).

  • Nickel powder, method for manufacturing same, conductor paste, and multilayer ceramic electronic component using same
    Patent number: 8734562
    Abstract: A nickel powder with an average particle size of 0.05 to 1.0 ?m, which is composed of nickel particles having an oxidized surface layer and containing sulfur, wherein the sulfur content with respect to the total weight of the powder is 100 to 2000 ppm, and the intensity of a peak identified to sulfur bonded to nickel in surface analysis by ESCA of the nickel particles varies in a direction toward the center from the surface of the particles, and this intensity has its maximum at a location deeper than 3 nm from the particle outermost surface. This nickel powder is manufactured by bringing a nickel powder containing sulfur and dispersed in a non-oxidizing gas atmosphere into contact with an oxidizing gas at a high temperature.
    Type: Grant
    Filed: January 16, 2012
    Date of Patent: May 27, 2014
    Assignee: Shoei Chemical Inc.
    Inventors: Yuji Akimoto, Kazuro Nagashima, Hidenori Ieda, Hitomi Yanagi
  • NICKEL POWDER, METHOD FOR MANUFACTURING SAME, CONDUCTOR PASTE, AND MULTILAYER CERAMIC ELECTRONIC COMPONENT USING SAME
    Publication number: 20120114945
    Abstract: A nickel powder with an average particle size of 0.05 to 1.0 ?m, which is composed of nickel particles having an oxidized surface layer and containing sulfur, wherein the sulfur content with respect to the total weight of the powder is 100 to 2000 ppm, and the intensity of a peak identified to sulfur bonded to nickel in surface analysis by ESCA of the nickel particles varies in a direction toward the center from the surface of the particles, and this intensity has its maximum at a location deeper than 3 nm from the particle outermost surface. This nickel powder is manufactured by bringing a nickel powder containing sulfur and dispersed in a non-oxidizing gas atmosphere into contact with an oxidizing gas at a high temperature.
    Type: Application
    Filed: January 16, 2012
    Publication date: May 10, 2012
    Inventors: Yuji Akimoto, Kazuro Nagashima, Hidenori Ieda, Hitomi Yanagi
  • Nickel powder, method for manufacturing same, conductor paste, and multilayer ceramic electronic component using same
    Patent number: 8128725
    Abstract: A nickel powder with an average particle size of 0.05 to 1.0 ?m, which is composed of nickel particles having an oxidized surface layer and containing sulfur, wherein the sulfur content with respect to the total weight of the powder is 100 to 2000 ppm, and the intensity of a peak identified to sulfur bonded to nickel in surface analysis by ESCA of the nickel particles varies in a direction toward the center from the surface of the particles, and this intensity has its maximum at a location deeper than 3 nm from the particle outermost surface. This nickel powder is manufactured by bringing a nickel powder containing sulfur and dispersed in a non-oxidizing gas atmosphere into contact with an oxidizing gas at a high temperature.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: March 6, 2012
    Assignee: Shoei Chemical Inc.
    Inventors: Yuji Akimoto, Kazuro Nagashima, Hidenori Ieda, Hitomi Yanagi
  • Nickel powder, method for manufacturing same, conductor paste, and multilayer ceramic electronic component using same
    Publication number: 20080226487
    Abstract: A nickel powder with an average particle size of 0.05 to 1.0 ?m, which is composed of nickel particles having an oxidized surface layer and containing sulfur, wherein the sulfur content with respect to the total weight of the powder is 100 to 2000 ppm, and the intensity of a peak identified to sulfur bonded to nickel in surface analysis by ESCA of the nickel particles varies in a direction toward the center from the surface of the particles, and this intensity has its maximum at a location deeper than 3 nm from the particle outermost surface. This nickel powder is manufactured by bringing a nickel powder containing sulfur and dispersed in a non-oxidizing gas atmosphere into contact with an oxidizing gas at a high temperature.
    Type: Application
    Filed: February 29, 2008
    Publication date: September 18, 2008
    Inventors: Yuji Akimoto, Kazuro Nagashima, Hidenori Ieda, Hitomi Yanagi