Patents by Inventor Nana Enomoto

Nana Enomoto 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).

  • Conductive fine particles and anisotropic conductive material
    Patent number: 8383016
    Abstract: Conductive fine particles have core particle surfaces coated with a metal-plated coating film layer containing nickel and phosphorus and a multilayer conductive layer comprising a palladium layer as the outer surface. The phosphorus content in region A of the metal-plated coating film layer, at a distance of no greater than 20% of the thickness of the entire metal-plated coating film layer from the surface of the core particle, is 7-15 wt % of the entire region A. The phosphorus content in region B of the metal-plated coating film layer, at a distance of no greater than 10% of the thickness of the entire metal-plated coating film layer from the surface of the metal-plated coating film layer on the palladium layer side, is 0.1-3 wt % of the entire region B, and the phosphorus content of the entire metal-plated coating film layer is 7 wt % or greater.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: February 26, 2013
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Nana Enomoto, Kunihiko Akai
  • CONDUCTIVE FINE PARTICLES AND ANISOTROPIC CONDUCTIVE MATERIAL
    Publication number: 20120228559
    Abstract: Conductive fine particles have core particle surfaces coated with a metal-plated coating film layer containing nickel and phosphorus and a multilayer conductive layer comprising a palladium layer as the outer surface. The phosphorus content in region A of the metal-plated coating film layer, at a distance of no greater than 20% of the thickness of the entire metal-plated coating film layer from the surface of the core particle, is 7-15 wt % of the entire region A. The phosphorus content in region B of the metal-plated coating film layer, at a distance of no greater than 10% of the thickness of the entire metal-plated coating film layer from the surface of the metal-plated coating film layer on the palladium layer side, is 0.1-3 wt % of the entire region B, and the phosphorus content of the entire metal-plated coating film layer is 7 wt % or greater.
    Type: Application
    Filed: March 9, 2012
    Publication date: September 13, 2012
    Applicant: Hitachi Chemical Company, Ltd.
    Inventors: Nana Enomoto, Kunihiko Akai
  • CONDUCTIVE FINE PARTICLES AND ANISOTROPIC CONDUCTIVE MATERIAL
    Publication number: 20110031449
    Abstract: The invention provides conductive fine particles with a satisfactory monodisperse property, low cost, resistance to migration and excellent conductivity. Conductive fine particles having core particle surfaces coated with a metal-plated coating film layer containing nickel and phosphorus and a multilayer conductive layer comprising a palladium layer as the outer surface, wherein the phosphorus content in region A of the metal-plated coating film layer, at a distance of no greater than 20% of the thickness of the entire metal-plated coating film layer from the surface of the core particle, is 7-15 wt % of the entire region A, the phosphorus content in region B of the metal-plated coating film layer, at a distance of no greater than 10% of the thickness of the entire metal-plated coating film layer from the surface of the metal-plated coating film layer on the palladium layer side, is 0.
    Type: Application
    Filed: August 6, 2010
    Publication date: February 10, 2011
    Applicant: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Nana Enomoto, Kunihiko Akai