Patents by Inventor Hirofumi Yamada

Hirofumi Yamada 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: 10107793
    Abstract: A method for recovering a metal that uses a reduced amount of a chelating agent is described, where the method includes a complex forming step of forming, in a mixture, a complex between a metal in a sample and a chelating agent; a complex depositing step of depositing the complex in the mixture; and a metal recovering step of recovering the deposited complex from the mixture, thereby recovering the metal in the sample.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: October 23, 2018
    Assignee: ARKRAY, Inc.
    Inventors: Hirofumi Yamada, Akitsugu Kudo
  • Publication number: 20170110385
    Abstract: A heat-conductive sheet includes a laminated sheet and first and insulating sheets bonded to first and second main surfaces of the laminated sheet. The laminated sheet includes graphite sheets and one or more adhesive layers disposed alternately on the graphite sheets to bonds the graphite sheets to each other. The first insulating sheet is bonded to the second insulating sheet outside an outer circumferential edge of the laminated sheet to seal the laminated sheet between the first and second insulating sheets. The laminated sheet includes an outer circumferential portion connected to the outer circumferential edge and an inner portion apart from the outer circumferential edge. The outer circumferential portion of the laminated sheet has a thickness smaller than a thickness of the inner portion. The heat-conductive sheet has high reliability of sealing the insulating sheet.
    Type: Application
    Filed: March 18, 2015
    Publication date: April 20, 2017
    Inventors: KEIJI KAWAJIRI, KAZUHIRO MIURA, MASAFUMI NAKAYAMA, HIROSHI EBINA, HIROFUMI YAMADA
  • Publication number: 20170036199
    Abstract: The resin solid acid is a sulfo group-modified resin obtained by introducing sulfo groups into a raw material resin in an uncarbonized state, the yield of the sulfo group-modified resin based on the weight of the uncarbonized raw material resin is 80% or more, the amount of sulfo groups in the sulfo group-modified resin is 1 mmol/g or more, and the raw material resin is in the form of a powder, granules or fibers. In addition, the method for producing the resin solid acid is a production method for obtaining a sulfo group-modified resin by comprising a step for adding a sulfonating agent in the form of any of sulfuric acid, fuming sulfuric acid or chlorosulfonic acid to a raw material resin in an uncarbonized state, and a step for heating the uncarbonized raw material resin at 200° C. or lower.
    Type: Application
    Filed: December 24, 2014
    Publication date: February 9, 2017
    Inventors: Atsushi Kodama, Hirofumi Yamada, Ryuji Kawakami, Tatsuya Shingu
  • Publication number: 20160228865
    Abstract: A method of production of a shaped solid acid which uses a wood starting material to keep down the prime costs, heat treats the synthetic resin binder itself together with the wood starting material to avoid deterioration of the catalyst performance due to coverage by the binder, and thereby realizes a high degree of freedom of design of shape and further a suitable hardness is provided. The method of production of a synthetic resin binder-shaped solid acid comprises a starting material kneading step (S10) of kneading a wood starting material powder M and synthetic resin binder B to obtain a wood starting material mixture, a shaping step (S20) of shaping the wood starting material mixture into predetermined shapes to obtain starting material shapes, a heat treatment step (S30) of heat treating said starting material shapes in an inert atmosphere to obtain heat treated shapes, and a sulfonating step (S40) of introducing sulfo groups into the heat treated shapes to obtain a shaped solid acid.
    Type: Application
    Filed: September 12, 2014
    Publication date: August 11, 2016
    Inventor: Hirofumi Yamada
  • Publication number: 20160219752
    Abstract: A thermal insulation sheet includes a heat storage sheet, an insulation sheet affixed to the heat storage sheet, and a highly-thermoconductive sheet affixed to the insulation sheet. The heat storage sheet contains a resin and powdery microcapsules mixed with the resin. The powdery microcapsules encapsulate latent-heat storage agent. The heat storage sheet has a void ratio not less than 10% and not more than 30%. Or, the heat storage sheet may have surface roughness Ra not less than 2 ?m and not more than 20 ?m. The thermal insulation sheet suppresses or retards transferring of heat generated in a heat-generating component to outside, and suppresses a rapid rising of a temperature of the heat-generating component.
    Type: Application
    Filed: September 1, 2014
    Publication date: July 28, 2016
    Inventors: MASAFUMI NAKAYAMA, YOSHIYA SAKAGUCHI, HIROFUMI YAMADA
  • Publication number: 20160172270
    Abstract: A heat-insulating sheet includes a heat storage sheet, a first insulating sheet, and a thermally conductive sheet. The heat storage sheet contains a first resin and a plurality of microcapsules containing latent heat storage material and mixed in the form of aggregates with each other. The first insulating sheet has a first face bonded to the heat storage sheet and a second face opposite to the first face. The thermally conductive sheet is bonded to the second face of the first insulating sheet. The content of the microcapsules in the heat storage sheet is falls within a range from 40 wt % to 90 wt %, inclusive. The heat storage sheet includes a layer free from the microcapsules at a portion in contact with the first insulating sheet.
    Type: Application
    Filed: January 8, 2014
    Publication date: June 16, 2016
    Inventors: MASAFUMI NAKAYAMA, YOSHIYA SAKAGUCHI, HIROFUMI YAMADA
  • Publication number: 20150247838
    Abstract: A method for recovering a metal that uses a reduced amount of a chelating agent is described, where the method includes a complex forming step of forming, in a mixture, a complex between a metal in a sample and a chelating agent; a complex depositing step of depositing the complex in the mixture; and a metal recovering step of recovering the deposited complex from the mixture, thereby recovering the metal in the sample.
    Type: Application
    Filed: February 26, 2015
    Publication date: September 3, 2015
    Applicant: ARKRAY, INC.
    Inventors: Hirofumi Yamada, Akitsugu Kudo
  • Patent number: 8796654
    Abstract: A probe needle is successively moved to a plurality of measurement points set in a measurement region on a sample so as to measure a z-displacement amount. An excitation control unit feedback-controls a piezoelectric element so that a vibration amplitude of a cantilever is constant in accordance with the detection output by a displacement detection unit. Moreover, a vertical displacement control unit feedback-controls a vertical position scan unit so as to obtain a constant distance between the probe needle and the sample according to a frequency shift by a frequency detection unit. When changes of outputs of two feedback loops at a certain measurement point are both within a predetermined range, a main control unit issues an instruction to a horizontal position control unit to rapidly move to the next measurement point. As a result, it is possible to adaptively decide such a measurement time that both of the two feedback controls at respective measurement points are established.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: August 5, 2014
    Assignee: Shimadzu Coporation
    Inventors: Masahiro Ohta, Noriaki Oyabu, Kenjiro Kimura, Shinichiro Ido, Kei Kobayashi, Hirofumi Yamada, Kazumi Matsushige
  • Patent number: 8536862
    Abstract: Above a sample (9) having magnetic domains, a distribution of magnetic force in a measurement plane (91) is obtained as a magnetic force image using a MFM, an auxiliary magnetic force image is obtained by performing measurement in a measurement plane (92) away from the measurement plane (91) by a distance d, and a difference between them is divided by the distance d to obtain a magnetic force gradient image. The magnetic force image and the auxiliary magnetic force image are Fourier transformed and substituted into a three-dimensional field obtaining equation derived from a general solution of the Laplace equation, and the three-dimensional field indicating the magnetic force is obtained. A state of the magnetic domains at the surface (93) of the sample (9) can be obtained with high accuracy by obtaining the three-dimensional field.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: September 17, 2013
    Assignee: Kyoto University
    Inventors: Kenjiro Kimura, Kei Kobayashi, Hirofumi Yamada, Kazumi Matsushige, Takashi Horiuchi, Nobuo Satoh, Akifumi Nakai
  • Patent number: 8400254
    Abstract: A surge absorbing element has a first electrode, a second electrode, and a ceramic layer. The second electrode is opposed to the first electrode. The ceramic layer has a polycrystal structure including a plurality of crystal grains showing voltage nonlinearity, and is at least partially brought into contact with the first electrode and the second electrode. The ceramic layer has a void inside therein, and surface discharge is generated on surfaces, exposed to the void, of the crystal grains, whereby electric conduction is attained between the first and second electrodes.
    Type: Grant
    Filed: April 13, 2010
    Date of Patent: March 19, 2013
    Assignee: Panasonic Corporation
    Inventors: Eiichi Koga, Noriko Sawada, Mikinori Amisawa, Seiichi Minami, Hirofumi Yamada, Tomohisa Okimoto
  • Patent number: 8225418
    Abstract: Incident light 19 emitted from a laser light source 18 is reflected on an upper surface of a cantilever 13, so that reflected light 19a enters light detection means 20. Since the incident light 19 and the reflected light 19a are in a plane not including a long axis of the cantilever 13, movements of the reflected light 19a due to change in a deflection amount ? of the cantilever 13 and due to change in a fine vertical movement amount z thereof are different in direction on the light detection means 20. This enables the change in the deflection amount ? of the cantilever 13 and the change in the fine vertical movement amount z thereof to be separated from output of the light detection means 20.
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: July 17, 2012
    Assignee: Kyoto University
    Inventors: Eika Tsunemi, Nobuo Satoh, Kei Kobayashi, Hirofumi Yamada, Kazumi Matsushige
  • Publication number: 20110304946
    Abstract: A surge absorbing element has a first electrode, a second electrode, and a ceramic layer. The second electrode is opposed to the first electrode. The ceramic layer has a polycrystal structure including a plurality of crystal grains showing voltage nonlinearity, and is at least partially brought into contact with the first electrode and the second electrode. The ceramic layer has a void inside therein, and surface discharge is generated on surfaces, exposed to the void, of the crystal grains, whereby electric conduction is attained between the first and second electrodes.
    Type: Application
    Filed: April 13, 2010
    Publication date: December 15, 2011
    Inventors: Eiichi Koga, Noriko Sawada, Mikinori Amisawa, Seiichi Minami, Hirofumi Yamada, Tomohisa Okimoto
  • Publication number: 20110261352
    Abstract: A probe needle is successively moved to a plurality of measurement points set in a measurement region on a sample so as to measure a z-displacement amount. An excitation control unit feedback-controls a piezoelectric element so that a vibration amplitude of a cantilever is constant in accordance with the detection output by a displacement detection unit. Moreover, a vertical displacement control unit feedback-controls a vertical position scan unit so as to obtain a constant distance between the probe needle and the sample according to a frequency shift by a frequency detection unit. When changes of outputs of two feedback loops at a certain measurement point are both within a predetermined range, a main control unit issues an instruction to a horizontal position control unit to rapidly move to the next measurement point. As a result, it is possible to adaptively decide such a measurement time that both of the two feedback controls at respective measurement points are established.
    Type: Application
    Filed: July 31, 2008
    Publication date: October 27, 2011
    Applicant: SHIMADZU CORPORATION
    Inventors: Masahiro Ohta, Noriaki Oyabu, Kenjiro Kimura, Shinichiro Ido, Kei Kobayashi, Hirofumi Yamada, Kazumi Matsushige
  • Publication number: 20110247107
    Abstract: Incident light 19 emitted from a laser light source 18 is reflected on an upper surface of a cantilever 13, so that reflected light 19a enters light detection means 20. Since the incident light 19 and the reflected light 19a are in a plane not including a long axis of the cantilever 13, movements of the reflected light 19a due to change in a deflection amount ? of the cantilever 13 and due to change in a fine vertical movement amount z thereof are different in direction on the light detection means 20. This enables the change in the deflection amount ? of the cantilever 13 and the change in the fine vertical movement amount z thereof to be separated from output of the light detection means 20.
    Type: Application
    Filed: December 7, 2009
    Publication date: October 6, 2011
    Applicant: KYOTO UNIVERSITY
    Inventors: Eika Tsunemi, Nobuo Satoh, Kei Kobayashi, Hirofumi Yamada, Kazumi Matsushige
  • Publication number: 20110062964
    Abstract: A method for measuring surface properties according to the present invention includes the steps of: with distance control feedback applied so that a desired physical quantity to be measured that is attributed to an interaction between a probe and a sample is actually measured while changing a measured distance between the probe and the sample in accordance with a relationship between the desired physical quantity and the measured distance, (i) setting a set value, corresponding to the desired physical quantity, which serves to change the measured distance; and (ii) recording, for each set value thus set, a relationship between the measured distance changed by the set value set in the step (i) and a physical quantity measured with the probe and the sample placed at that measured distance. This allows precise and quick measurement of a physical quantity even in a region where the probe and the sample are very close to each other, while avoiding a collision between them.
    Type: Application
    Filed: April 30, 2009
    Publication date: March 17, 2011
    Inventors: Yoshihiro Hosokawa, Kei Kobayashi, Hirofumi Yamada, Kazumi Matsushige, Yukiko Mori
  • Patent number: 7829863
    Abstract: An electron beam irradiation device of the present invention includes: a projector 8 for generating a two-dimensional light pattern 13; a microchannel plate 11 for (i) generating an electron beam array based on the light pattern 13 having entered, (ii) amplifying the electron beam array, and (iii) emitting the electron beam array as an amplified electron beam array 14; and an electron beam lens section 12 for converging the amplified electron beam array 14. This electron beam irradiation device is capable of manufacturing a semiconductor device whose performance is improved through a finer processing by means of irradiation using an electron beam. Further, the electron beam irradiation device allows cost reduction, because the device allows collective irradiation using a two dimensional pattern.
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: November 9, 2010
    Assignee: Kyoto University
    Inventors: Kenjiro Kimura, Kei Kobayashi, Hirofumi Yamada, Kazumi Matsushige
  • Publication number: 20100219819
    Abstract: Above the sample (9) having magnetic domains, a distribution of magnetic force in a measurement plane (91) is obtained as a magnetic force image with use of a MFM, an auxiliary magnetic force image is obtained by performing measurement in a measurement plane (92) away from the measurement plane (91) by a minute distance d, and a difference between them is divided by the minute distance d to obtain a magnetic force gradient image. The magnetic force image and the auxiliary magnetic force image are Fourier transformed and substituted into a three-dimensional field obtaining equation derived from a general solution of the Laplace equation, and the three-dimensional field indicating the magnetic force is obtained with high accuracy. A state of the magnetic domains at the surface (93) of the sample (9) can be obtained with high accuracy by obtaining the three-dimensional field.
    Type: Application
    Filed: March 28, 2008
    Publication date: September 2, 2010
    Inventors: Kenjiro Kimura, Kei Kobayashi, Hirofumi Yamada, Kazumi Matsushige, Takashi Horiuchi, Nobuo Satoh, Akifumi Nakai
  • Patent number: 7780143
    Abstract: An object is to provide a gate valve capable of preventing operational deficiencies caused by particulate materials accumulating in a valve box, thus providing superior sealing properties and high durability, having a simple structure, and allowing inspection and maintenance to be performed easily.
    Type: Grant
    Filed: November 29, 2007
    Date of Patent: August 24, 2010
    Assignees: Mitsubishi Heavy Industries, Ltd., Hirata Valve Industry Co., Ltd., Clean Coal Power R&D Co., Ltd., Hokkaido Electric Power Co., Incorporated, Tohoku Electric Power Co., Inc., The Tokyo Electric Power Co., Inc., Chubu Electric Power Co., Inc., Hokuriku Electric Power Co., The Kansai Electric Power Co., Inc., The Chugoku Electric Power Co., Inc., Shikoku Electric Power Co., Inc., Kyushu Electric Power Co., Inc., Electric Power Development Co., Ltd., Central Research Institute of Electric Power Industry
    Inventors: Yasunari Shibata, Yoshinori Koyama, Soken Takase, Taizo Hoshino, Shuji Kameyama, Yasuhiro Suzuki, Yoshihiko Horie, Hitoshi Terada, Hirofumi Yamada
  • Publication number: 20090140195
    Abstract: An object is to provide a gate valve capable of preventing operational deficiencies caused by particulate materials accumulating in a valve box, thus providing superior sealing properties and high durability, having a simple structure, and allowing inspection and maintenance to be performed easily.
    Type: Application
    Filed: November 29, 2007
    Publication date: June 4, 2009
    Applicants: MITSUBISHI HEAVY INDUSTRIES, LTD., HIRATA VALVE INDUSTRY CO., LTD., Clean Coal Power R&D Co., LTD., Hokkaido Electric Power Company, Incorporated, Tohoku Electric Power Co., Inc., THE TOKYO ELECTRIC POWER COMPANY, INCORPORATED, CHUBU Electric Power Co., Inc., HOKURIKU ELECTRIC POWER COMPANY, THE KANSAI ELECTRIC POWER CO., INC., THE CHUGOKU ELECTRIC POWER CO., INC., SHIKOKU ELECTRIC POWER CO., INC., KYUSHU ELECTRIC POWER CO., INC., ELECTRIC POWER DEVELOPMENT CO., LTD., Central Research Institute of Electric Power Industry
    Inventors: Yasunari Shibata, Yoshinori Koyama, Soken Takase, Taizo Hoshino, Shuji Kameyama, Yasuhiro Suzuki, Yoshihiko Horie, Hitoshi Terada, Hirofumi Yamada
  • Publication number: 20090127473
    Abstract: An electron beam irradiation device of the present invention includes: a projector 8 for generating a two-dimensional light pattern 13; a microchannel plate 11 for (i) generating an electron beam array based on the light pattern 13 having entered, (ii) amplifying the electron beam array, and (iii) emitting the electron beam array as an amplified electron beam array 14; and an electron beam lens section 12 for converging the amplified electron beam array 14. This electron beam irradiation device is capable of manufacturing a semiconductor device whose performance is improved through a finer processing by means of irradiation using an electron beam. Further, the electron beam irradiation device allows cost reduction, because the device allows collective irradiation using a two dimensional pattern.
    Type: Application
    Filed: November 18, 2005
    Publication date: May 21, 2009
    Inventors: Kenjiro Kimura, Kei Kobayashi, Hirofumi Yamada, Kazumi Matsushige