Patents by Inventor Kensuke Yoshihara

Kensuke Yoshihara 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).

  • Publication number: 20180009979
    Abstract: A resin composition constituted by containing an epoxy resin monomer having a mesogenic structure, a novolac resin containing a compound having a structural unit represented by the following general formula (I), and an inorganic filler is superior in preservation stability before curing, and can attain high thermal conductivity after curing. In the following general formula (I), R1, R2 and R3 independently represent a hydrogen atom, an alkyl group, an aryl group, or an aralkyl group; m represents an integer of 0 to 2; and n an integer of 1 to 7.
    Type: Application
    Filed: September 20, 2017
    Publication date: January 11, 2018
    Inventors: Tomoo NISHIYAMA, Haruaki SUE, Hideyuki KATAGI, Naoki HARA, Hiroyuki TAKAHASHI, Yasuo MIYAZAKI, Yoshitaka TAKEZAWA, Hiroyuki TANAKA, Kensuke YOSHIHARA, Masayoshi JOUMEN
  • Patent number: 9349931
    Abstract: The present invention provides a resin composition including an epoxy resin monomer, a novolac resin containing a compound having a structural unit represented by the following general Formula (I), and a filler, in which a particle size distribution of the filler, measured using laser diffractometry, has peaks in the respective ranges of from 0.01 ?m to less than 1 ?m, from 1 ?m to less than 10 ?m, and from 10 ?m to 100 ?m, and the filler contains boron nitride particles having particle sizes of from 10 ?m to 100 ?m. In the general Formula (I), R1 represents an alkyl group, an aryl group, or an aralkyl group. Each of R2 and R3 independently represents a hydrogen atom, an alkyl group, aryl group, or an aralkyl group. m represents a number from 0 to 2; and n represents a number from 1 to 7.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: May 24, 2016
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Tomoo Nishiyama, Atsushi Kuwano, Toshiaki Shirasaka, Naoki Hara, Kensuke Yoshihara, Hideyuki Katagi
  • Publication number: 20140283972
    Abstract: A resin composition constituted by containing an epoxy resin monomer having a mesogenic structure, a novolac resin containing a compound having a structural unit represented by the following general formula (I), and an inorganic filler is superior in preservation stability before curing, and can attain high thermal conductivity after curing. In the following general formula (I), R1, R2 and R3 independently represent a hydrogen atom, an alkyl group, an aryl group, or an aralkyl group; m represents an integer of 0 to 2; and n an integer of 1 to 7.
    Type: Application
    Filed: June 5, 2014
    Publication date: September 25, 2014
    Applicant: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Tomoo NISHIYAMA, Haruaki SUE, Hideyuki KATAGI, Naoki HARA, Hiroyuki TAKAHASHI, Yasuo MIYAZAKI, Yoshitaka TAKEZAWA, Hiroyuki TANAKA, Kensuke YOSHIHARA, Masayoshi JOUMEN
  • Publication number: 20140015000
    Abstract: The present invention provides a resin composition including an epoxy resin monomer, a novolac resin containing a compound having a structural unit represented by the following general Formula (I), and a filler, in which a particle size distribution of the filler, measured using laser diffractometry, has peaks in the respective ranges of from 0.01 ?m to less than 1 ?m, from 1 ?m to less than 10 ?m, and from 10 ?m to 100 ?m, and the filler contains boron nitride particles having particle sizes of from 10 ?m to 100 ?m. In the general Formula (I), R1 represents an alkyl group, an aryl group, or an aralkyl group. Each of R2 and R3 independently represents a hydrogen atom, an alkyl group, aryl group, or an aralkyl group. m represents a number from 0 to 2; and n represents a number from 1 to 7.
    Type: Application
    Filed: March 28, 2012
    Publication date: January 16, 2014
    Inventors: Tomoo Nishiyama, Atsushi Kuwano, Toshiaki Shirasaka, Naoki Hara, Kensuke Yoshihara, Hideyuki Katagi
  • Publication number: 20130189514
    Abstract: A multilayer resin sheet including: a resin layer that includes an epoxy resin monomer, a curing agent, and a filler; and an adhesive layer positioned on at least one face of the resin layer, the filler having peaks in ranges of from 0.01 ?m to less than 1 ?m, from 1 ?m to less than 10 ?m, and from 10 ?m to 100 ?m, respectively, in terms of particle size distribution as measured by laser diffractometry, and the filler having a particle size of from 10 ?m to 100 ?m including a boron nitride filler.
    Type: Application
    Filed: October 6, 2011
    Publication date: July 25, 2013
    Inventors: Tomoo Nishiyama, Yoshitaka Takezawa, Hideyuki Katagi, Naoki Hara, Yasuo Miyazaki, Kensuke Yoshihara
  • Publication number: 20120251830
    Abstract: A resin composition constituted by containing an epoxy resin monomer having a mesogenic structure, a novolac resin containing a compound having a structural unit represented by the following general formula (I), and an inorganic filler is superior in preservation stability before curing, and can attain high thermal conductivity after curing. In the following general formula (I), R1, R2 and R3 independently represent a hydrogen atom, an alkyl group, an aryl group, or an aralkyl group; m represents an integer of 0 to 2; and n an integer of 1 to 7.
    Type: Application
    Filed: September 28, 2010
    Publication date: October 4, 2012
    Applicant: Hitachi Chemical Company, LTD
    Inventors: Tomoo Nishiyama, Haruaki Sue, Hideyuki Katagi, Naoki Hara, Hiroyuki Takahashi, Yasuo Miyazaki, Yoshitaka Takezawa, Hiroyuki Tanaka, Kensuke Yoshihara, Masayoshi Joumen
  • Publication number: 20120244351
    Abstract: A multilayer resin sheet is constituted by including a resin layer containing an epoxy resin having a mesogenic skeleton, a curing agent and an inorganic filler, and an insulating adhesive layer formed on at least either of the surfaces of the resin layer. A cured multilayer resin sheet originated from the multilayer resin sheet has high thermal conductivity, good insulation and adhesive strength, and, further, superior thermal shock resistance, and is suitable as an electric insulating material to be used for an electric or electronic device.
    Type: Application
    Filed: September 28, 2010
    Publication date: September 27, 2012
    Inventors: Hideyuki Katagi, Yoshitaka Takezawa, Tomoo Nishiyama, Naoki Hara, Hiroyuki Tanaka, Kensuke Yoshihara, Masayoshi Joumen, Hiroyuki Takahashi