Patents by Inventor Yoshiharu Hatakeyama

Yoshiharu Hatakeyama 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: 20200048093
    Abstract: Provided is a carbon nanotube aggregate excellent in gripping force in a wide temperature range including high-temperature conditions. The carbon nanotube aggregate of the present invention is a carbon nanotube aggregate of a sheet shape, including a plurality of carbon nanotubes, wherein the carbon nanotube aggregate satisfies the following condition for FFM differential voltages when a frictional curve is obtained by scanning a front surface and/or a back surface of the carbon nanotube aggregate with a probe of a scanning probe microscope under a state in which the probe is brought into contact therewith: a ratio of an FFM differential voltage at 210° C. to an FFM differential voltage at 25° C. is from 0.3 to 5.
    Type: Application
    Filed: August 8, 2017
    Publication date: February 13, 2020
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yoshiharu HATAKEYAMA, Tomoaki ICHIKAWA, Shotaro MASUDA, Yohei MAENO
  • Publication number: 20200039826
    Abstract: Provided is a carbon nanotube aggregate excellent in gripping force. The carbon nanotube aggregate of the present invention is a carbon nanotube aggregate of a sheet shape, including a plurality of carbon nanotubes, wherein the carbon nanotube aggregate has a cohesive strength N of 3 nJ or more on a front surface and/or a back surface thereof, which is measured by a nanoindentation method with an indentation load of 500 ?N.
    Type: Application
    Filed: August 14, 2017
    Publication date: February 6, 2020
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yoshiharu HATAKEYAMA, Tomoaki ICHIKAWA, Shotaro MASUDA, Yohei MAENO
  • Patent number: 10544341
    Abstract: The present invention provides a thermal conductive polymer composition with low probability for mixing of an air bubble in a thermal conductive molded article, which is a thermal conductive polymer composition including thermal conductive inorganic particles having a specific particle size distribution and an electrically insulating polymer.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: January 28, 2020
    Assignees: NITTO DENKO CORPORATION, NITTO SHINKO CORPORATION
    Inventors: Kenichi Fujikawa, Yoshiharu Hatakeyama, Miho Yamaguchi, Yuji Yamagishi, Akihiro Oohashi
  • Publication number: 20190218426
    Abstract: Provided is a pressure-sensitive adhesive structure including a carbon nanotube aggregate formed on a base material in which carbon nanotubes forming the carbon nanotube aggregate are hardly detached. The pressure-sensitive adhesive structure of the present invention includes: a base material; an intermediate layer; and a carbon nanotube aggregate layer, wherein the carbon nanotube aggregate layer includes a plurality of carbon nanotube aggregates, wherein the intermediate layer includes a layer containing the carbon nanotubes and a fixing agent, and wherein the intermediate layer has a thickness of 100 nm or more.
    Type: Application
    Filed: August 2, 2017
    Publication date: July 18, 2019
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yoshiharu HATAKEYAMA, Shotaro MASUDA, Tomoaki ICHIKAWA, Yohei MAENO
  • Publication number: 20190177165
    Abstract: Provided is a carbon nanotube aggregate that can maintain a sheet shape. The carbon nanotube aggregate of the present invention includes a plurality of carbon nanotubes, the carbon nanotube aggregate being formed into a sheet shape, wherein the carbon nanotube aggregate includes a non-aligned portion of the carbon nanotubes. In one embodiment, the carbon nanotube aggregate further includes an aligned portion of the carbon nanotubes. In one embodiment, the non-aligned portion is present at an end portion in a lengthwise direction of the carbon nanotube aggregate.
    Type: Application
    Filed: July 28, 2017
    Publication date: June 13, 2019
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yoshiharu HATAKEYAMA, Tomoaki ICHIKAWA, Shotaro MASUDA, Yohei MAENO
  • Patent number: 10265693
    Abstract: Organic-inorganic composite particles that can be dispersed in a solvent and/or a resin as primary particles having an organic group on the surface of inorganic particles, the organic-inorganic composite particles having negative birefringence.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: April 23, 2019
    Assignee: NITTO DENKO CORPORATION
    Inventors: Yoshiharu Hatakeyama, Takahiro Fukuoka, Junichi Nagase, Shusaku Shibata, Tatsuki Nagatsuka, Saori Yamamoto
  • Publication number: 20190071265
    Abstract: Provided is a transport fixing jig that has a high gripping force, hardly contaminates an object to be processed (object to be transported), and is excellent in heat resistance. The transport fixing jig of the present invention includes: a first base material; a carbon nanotube aggregate; and an adhesive layer arranged between the first base material and the carbon nanotube aggregate, wherein the first base material and the carbon nanotube aggregate are bonded to each other via the adhesive layer, and wherein a ratio (adhesive layer/base material) between a linear expansion coefficient of the first base material and a linear expansion coefficient of the adhesive layer is from 0.7 to 1.8.
    Type: Application
    Filed: March 14, 2017
    Publication date: March 7, 2019
    Applicant: NITTO DENKO CORPORATION
    Inventors: Shotaro MASUDA, Tomoaki ICHIKAWA, Yohei MAENO, Yoshiharu HATAKEYAMA
  • Publication number: 20180024057
    Abstract: The present invention provides a measurement device which is compact and portable and is simply operated, and which is capable of quantifying the amount of an object to be inspected with high sensitivity and high accuracy. A measurement device of the present invention includes an SPR sensor cell, a light source, and a light receiving element. The SPR sensor cell includes a plurality of optical waveguides. At least one of the plurality of optical waveguides forms a detection unit together with a metal layer onto which a recognition substance for an object to be inspected is fixed, and at least another one of the plurality of optical waveguides forms a reference unit together with a metal layer free of the recognition substance.
    Type: Application
    Filed: January 29, 2016
    Publication date: January 25, 2018
    Inventors: Terukazu IHARA, Hajime NISHIO, Yoshiharu HATAKEYAMA, Chiharu YANO, Junko NA KANO
  • Patent number: 9847544
    Abstract: Ion conductive organic-inorganic composite particles are particles that have an organic group on the surface of inorganic particles and have at least a configuration that does not allow the inorganic particles to contact with each other by steric hindrance of the organic group, the organic group containing an ion conductive group.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: December 19, 2017
    Assignee: NITTO DENKO CORPORATION
    Inventors: Yoshiharu Hatakeyama, Hideyuki Emori, Hiroyuki Nishii, Junichi Nagase, Shusaku Shibata, Saori Fukuzaki, Tatsuki Nagatsuka, Takahiro Fukuoka
  • Publication number: 20170189895
    Abstract: Organic-inorganic composite particles that can be dispersed in a solvent and/or a resin as primary particles having an organic group on the surface of inorganic particles, the organic-inorganic composite particles having negative birefringence.
    Type: Application
    Filed: March 22, 2017
    Publication date: July 6, 2017
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yoshiharu HATAKEYAMA, Takahiro FUKUOKA, Junichi NAGASE, Shusaku SHIBATA, Tatsuki NAGATSUKA, Saori FUKUZAKI
  • Patent number: 9663635
    Abstract: The present invention provides, as an aluminum nitride powder excellent in the water resistance, an aluminum nitride powder subjected to a surface treatment with a predetermined organic compound. The present invention also provides a resin composition including the aluminum nitride powder and a resin, and a thermal conductive molded article obtained by molding the resin composition.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: May 30, 2017
    Assignees: NITTO DENKO CORPORATION, NITTO SHINKO CORPORATION
    Inventors: Yoshiharu Hatakeyama, Kenichi Fujikawa, Miho Yamaguchi, Yuji Yamagishi, Akihiro Oohashi
  • Publication number: 20170081579
    Abstract: The present invention provides a thermal conductive polymer composition with low probability for mixing of an air bubble in a thermal conductive molded article, which is a thermal conductive polymer composition including thermal conductive inorganic particles having a specific particle size distribution and an electrically insulating polymer.
    Type: Application
    Filed: December 16, 2014
    Publication date: March 23, 2017
    Applicants: NITTO DENKO CORPORATION, NITTO SHINKO CORPORATION
    Inventors: Kenichi FUJIKAWA, Yoshiharu HATAKEYAMA, Miho YAMAGUCHI, Yuji YAMAGISHI, Akihiro OOHASHI
  • Publication number: 20170066908
    Abstract: The present invention provides, as an aluminum nitride powder excellent in the water resistance, an aluminum nitride powder subjected to a surface treatment with a predetermined organic compound. The present invention also provides a resin composition including the aluminum nitride powder and a resin, and a thermal conductive molded article obtained by molding the resin composition.
    Type: Application
    Filed: December 16, 2014
    Publication date: March 9, 2017
    Applicants: NITTO DENKO CORPORATION, NITTO SHINKO CORPORATION
    Inventors: Yoshiharu HATAKEYAMA, Kenichi FUJIKAWA, Miho YAMAGUCHI, Yuji YAMAGISHI, Akihiro OOHASHI
  • Publication number: 20170022407
    Abstract: The present invention provides a thermal conductive polymer composition including aluminum nitride particles having a specific particle size distribution, and a polymer, as a polymer composition with low probability for mixing of an air bubble in a thermal conductive molded article, despite a high volume filling of aluminum nitride particle.
    Type: Application
    Filed: December 16, 2014
    Publication date: January 26, 2017
    Applicants: NITTO DENKO CORPORATION, NITTO SHINKO CORPORATION
    Inventors: Yoshiharu HATAKEYAMA, Kenichi FUJIKAWA, Miho YAMAGUCHI, Akihiro OOHASHI, Yuji YAMAGISHI
  • Publication number: 20160222194
    Abstract: Organic-inorganic composite particles that can be dispersed in a solvent and/or a resin as primary particles having an organic group on the surface of inorganic particles, the organic-inorganic composite particles having negative birefringence.
    Type: Application
    Filed: April 13, 2016
    Publication date: August 4, 2016
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yoshiharu HATAKEYAMA, Takahiro FUKUOKA, Junichi NAGASE, Shusaku SHIBATA, Tatsuki NAGATSUKA, Saori FUKUZAKI
  • Publication number: 20150090922
    Abstract: A thermally conductive sheet is a thermally conductive sheet 1 formed from a thermally conductive composition containing boron nitride particles 2 in a plate shape and a rubber component. The content ratio of the boron nitride particles 2 is 35 vol % or more and the thermal conductivity in a direction perpendicular to a plane direction PD of the thermally conductive sheet 1 is 4 W/m·K or more.
    Type: Application
    Filed: February 7, 2013
    Publication date: April 2, 2015
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yoshiharu Hatakeyama, Kenichi Fujikawa, Miho Yamaguchi, Saori Yamamoto, Seiji Izutani
  • Publication number: 20150065340
    Abstract: Organic-inorganic composite particles that can be dispersed in a solvent and/or a resin as primary particles having an organic group on the surface of inorganic particles, the organic-inorganic composite particles having negative birefringence.
    Type: Application
    Filed: November 7, 2014
    Publication date: March 5, 2015
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yoshiharu HATAKEYAMA, Takahiro FUKUOKA, Junichi NAGASE, Shusaku SHIBATA, Tatsuki NAGATSUKA, Saori FUKUZAKI
  • Publication number: 20140367883
    Abstract: A method for producing a thermally conductive sheet includes the steps of preparing a material component containing boron nitride particles in a plate shape and a polymer matrix, forming a long-length sheet from the material component with a calender, and pressing the long-length sheet.
    Type: Application
    Filed: February 7, 2013
    Publication date: December 18, 2014
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yoshiharu Hatakeyama, Saori Yamamoto, Miho Yamaguchi, Seiji Izutani, Kenichi Fujikawa
  • Publication number: 20130266886
    Abstract: Ion conductive organic-inorganic composite particles are particles that have an organic group on the surface of inorganic particles and have at least a configuration that does not allow the inorganic particles to contact with each other by steric hindrance of the organic group, the organic group containing an ion conductive group.
    Type: Application
    Filed: April 11, 2011
    Publication date: October 10, 2013
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yoshiharu Hatakeyama, Hideyuki Emori, Hiroyuki Nishii, Junichi Nagase, Shusaku Shibata, Saori Fukuzaki, Tatsuki Nagatsuka, Takahiro Fukuoka
  • Publication number: 20130109770
    Abstract: Organic-inorganic composite particles that can be dispersed in a solvent and/or a resin as primary particles having an organic group on the surface of inorganic particles, the organic-inorganic composite particles having negative birefringence.
    Type: Application
    Filed: April 11, 2011
    Publication date: May 2, 2013
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yoshiharu Hatakeyama, Takahiro Fukuoka, Junichi Nagase, Shusaku Shibata, Tatsuki Nagatsuka, Saori Fukuzaki