Patents by Inventor Hikaru Yasuhara

Hikaru Yasuhara 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).

  • Patent number: 7771627
    Abstract: A conductive composition capable of producing a conductive coating with excellent flexibility and a high conductivity comparable to that of metallic silver, without using high temperatures as film forming conditions. The conductive composition includes a particulate silver compound and a binder, and optionally a reducing agent and a binder. Silver oxide, silver carbonate and silver acetate and the like are used as the particulate silver compound. Ethylene glycol, diethylene glycol, and ethylene glycol diacetate and the like are used as the reducing agent, and a fine powder of a thermosetting resin such as a polyvalent phenol compound, phenol resin, alkyd resin or polyester resin, or a thermoplastic resin such as a styrene resin or polyethylene terephthalate, with an average particle diameter from 20 nm to 5 ?m is used as the binder. Furthermore, the average particle diameter of the particulate silver compound may be from 0.01 to 10 ?m.
    Type: Grant
    Filed: April 9, 2003
    Date of Patent: August 10, 2010
    Assignees: Fujikura Ltd., Fujikura Kasei Co., Ltd.
    Inventors: Katsuhiko Takahashi, Kiwako Ohmori, Masanori Endo, Hikaru Yasuhara, Takayuki Imai, Akinobu Ono, Toshiyuki Honda, Koji Okamoto, Masafumi Ito
  • Publication number: 20050116203
    Abstract: A conductive composition capable of producing a conductive paint with excellent flexibility and a high conductivity comparable to that of metallic silver, without using high temperatures as film forming conditions. The conductive composition includes a particulate silver compound and a binder, and optionally a reducing agent and a binder. Silver oxide, silver carbonate and silver acetate and the like are used as the particulate silver compound. Ethylene glycol, diethylene glycol, and ethylene glycol diacetate and the like are used as the reducing agent, and a fine powder of a thermosetting resin such as a polyvalent phenol compound, phenol resin, alkyd resin or polyester resin, or a thermoplastic resin such as a styrene resin or polyethylene terephthalate, with an average particle diameter from 20 nm to 5 ?m is used as the binder. Furthermore, the average particle diameter of the particulate silver compound is preferably from 0.01 to 10 ?m.
    Type: Application
    Filed: April 9, 2003
    Publication date: June 2, 2005
    Inventors: Katsuhiko Takahashi, Kiwako Ohmori, Masanori Endo, Hikaru Yasuhara, Takayuki Imai, Akinobu Ono, Toshiyuki Honda, Koji Okamoto, Masafumi Ito
  • Publication number: 20040259007
    Abstract: An electrically conductive composition can be obtained that provides an electrically conductive coating having low volume resistivity and high electrical conductivity comparable to that of metallic silver independent of high-temperature film deposition conditions, while also enabling the line width of an electrical circuit to be sufficiently narrow without having to increase thickness in the case of forming an electrical circuit of a flexible circuit board and so forth.
    Type: Application
    Filed: June 25, 2004
    Publication date: December 23, 2004
    Inventors: Katsuhiko Takahashi, Kiwako Ohmori, Masanori Endo, Hikaru Yasuhara, Akinobu Ono, Takayuki Imai, Yukihiko Kurosawa, Hiroaki Zaima
  • Patent number: 4013948
    Abstract: The distance from the end of the cable to the dielectric weak point of said cable is measured by applying a D.C. high voltage to said cable and generating a discharge at the dielectric weak point, obtaining a pair of pulse signals one by differentiating a surge signal generated and the other reflected at said dielectric weak point, limiting the amplitude of said pair of pulse signals, and measuring the interval between said pair of pulse signals.
    Type: Grant
    Filed: August 12, 1975
    Date of Patent: March 22, 1977
    Assignee: The Fujikura Cable Works, Ltd.
    Inventors: Shigenobu Tanaka, Hikaru Yasuhara, Munesuke Oguchi