Patents by Inventor Kazuhiko Nakahara

Kazuhiko Nakahara 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: 12146910
    Abstract: According to a certain embodiment, the test system includes a first test board, a test executable integrated circuit, and a first measuring apparatus. A device under test (DUT) is mounted on the first test board. The test executable integrated circuit is mounted on the first test board, and is configured to read firmware stored in the DUT in advance and to test the DUT. The first measuring apparatus instructs the test executable integrated circuit to start a test of the DUT. There are provided the test system, the test method, and the non-transitory computer readable medium, capable of reducing costs required for tests and also of shortening test time.
    Type: Grant
    Filed: March 3, 2023
    Date of Patent: November 19, 2024
    Assignee: KIOXIA CORPORATION
    Inventor: Kazuhiko Nakahara
  • Publication number: 20230400514
    Abstract: According to a certain embodiment, the test system includes a first test board, a test executable integrated circuit, and a first measuring apparatus. A device under test (DUT) is mounted on the first test board. The test executable integrated circuit is mounted on the first test board, and is configured to read firmware stored in the DUT in advance and to test the DUT. The first measuring apparatus instructs the test executable integrated circuit to start a test of the DUT. There are provided the test system, the test method, and the non-transitory computer readable medium, capable of reducing costs required for tests and also of shortening test time.
    Type: Application
    Filed: March 3, 2023
    Publication date: December 14, 2023
    Applicant: Kioxia Corporation
    Inventor: Kazuhiko NAKAHARA
  • Patent number: 11827739
    Abstract: There are provided a naphthol resin and an epoxy resin that impart characteristics such as high heat resistance, a low dielectric loss tangent, and a low coefficient of thermal expansion (CTE), and an epoxy resin composition including the naphthol resin or the epoxy resin as an essential component, and cured products thereof. A naphthol resin which is represented by the following formula: where R1 represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, and n represents the number of repetitions and is a number of 2 to 10, and in which, in terms of area ratio in GPC measurement, a ratio of components for which n=6 or more is 15% or more, and a ratio of components for which n=1 in GPC is 30% or less, and a hydroxy group equivalent is 260 to 400 g/eq.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: November 28, 2023
    Assignee: NIPPON STEEL CHEMICAL & MATERIAL CO., LTD.
    Inventors: Tsugutoshi Wasano, Kazuo Ishihara, Kazuhiko Nakahara
  • Publication number: 20230150895
    Abstract: Provided is a soil conditioner that comprises, as an active ingredient, a compound represented by general formula (1), a salt thereof or a solvate of the same. In general formula (1), R1 to R6 independently represent an optionally substituted hydrocarbon group having 1-5 carbon atoms, an optionally substituted alkoxy group having 1-5 carbon atoms, an amino group, a hydroxy group, a halogen atom or a hydrogen atom.
    Type: Application
    Filed: January 5, 2023
    Publication date: May 18, 2023
    Inventors: Tadashi YOSHIHASHI, Guntur Venkata Subbarao, Kazuhiko Nakahara, Hiroshi Ono
  • Publication number: 20220169781
    Abstract: There are provided a naphthol resin and an epoxy resin that impart characteristics such as high heat resistance, a low dielectric loss tangent, and a low coefficient of thermal expansion (CTE), and an epoxy resin composition including the naphthol resin or the epoxy resin as an essential component, and cured products thereof. A naphthol resin which is represented by the following formula: where R1 represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, and n represents the number of repetitions and is a number of 2 to 10, and in which, in terms of area ratio in GPC measurement, a ratio of components for which n=6 or more is 15% or more, and a ratio of components for which n=1 in GPC is 30% or less, and a hydroxy group equivalent is 260 to 400 g/eq.
    Type: Application
    Filed: March 25, 2020
    Publication date: June 2, 2022
    Applicant: NIPPON STEEL CHEMICAL & MATERIAL CO., LTD.
    Inventors: Tsugutoshi Wasano, Kazuo Ishihara, Kazuhiko Nakahara
  • Patent number: 11283415
    Abstract: A MIM capacitor is included in any one or more of a first matching circuit and a second matching circuit. The mat capacitor performs impedance matching of a fundamental wave included in a high-frequency signal with a transmission line, and forms a short-circuit point for a harmonic included in the high-frequency signal at a connection point with the transmission line.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: March 22, 2022
    Assignee: Mitsubishi Electric Corporation
    Inventors: Dai Ninomiya, Eigo Kuwata, Kazuhiko Nakahara, Makoto Kimura, Yoshitaka Kamo
  • Publication number: 20210328557
    Abstract: A MIM capacitor is included in any one or more of a first matching circuit and a second matching circuit. The mat capacitor performs impedance matching of a fundamental wave included in a high-frequency signal with a transmission line, and forms a short-circuit point for a harmonic included in the high-frequency signal at a connection point with the transmission line.
    Type: Application
    Filed: July 14, 2017
    Publication date: October 21, 2021
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Dai NINOMIYA, Eigo KUWATA, Kazuhiko NAKAHARA, Makoto KIMURA, Yoshitaka KAMO
  • Patent number: 10700682
    Abstract: A high-frequency switch includes: a first transistor connected to an input terminal and a first output terminal; a second transistor connected to the first output terminal; a third transistor connected to the second transistor and grounded; a resistor connected to a connection between the second and third transistors and grounded; a switching circuit switchable between a state in which the switching circuit allows passage of a transmitted/received signal between the input terminal and a second output terminal and a state in which the switching circuit cuts off the transmitted/received signal; and a control unit to control the first, second, and third transistors and the switching circuit. At the time of reception, the control unit brings the switching circuit into the state in which the switching circuit cuts off the transmitted/received signal, places the first and third transistors in an on-state, and places the second transistor in an off-state.
    Type: Grant
    Filed: March 5, 2018
    Date of Patent: June 30, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tetsunari Saito, Ryota Komaru, Kazuhiko Nakahara
  • Publication number: 20200044651
    Abstract: A high-frequency switch includes: a first transistor connected to an input terminal and a first output terminal; a second transistor connected to the first output terminal; a third transistor connected to the second transistor and grounded; a resistor connected to a connection between the second and third transistors and grounded; a switching circuit switchable between a state in which the switching circuit allows passage of a transmitted/received signal between the input terminal and a second output terminal and a state in which the switching circuit cuts off the transmitted/received signal; and a control unit to control the first, second, and third transistors and the switching circuit. At the time of reception, the control unit brings the switching circuit into the state in which the switching circuit cuts off the transmitted/received signal, places the first and third transistors in an on-state, and places the second transistor in an off-state.
    Type: Application
    Filed: March 5, 2018
    Publication date: February 6, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Tetsunari SAITO, Ryota KOMARU, Kazuhiko NAKAHARA
  • Patent number: 9674785
    Abstract: To provide a terminal management apparatus capable of improving convenience in a state that power consumption is suppressed. A communication section 501 receives reporting information notifying the presence of a notification utilizing a first communication function directed to a terminal 510. When the communication section 501 has received the reporting information, a control section 502 transmits a message indicating the presence of the notification, to the terminal 510 by using a second communication function different from the first communication function.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: June 6, 2017
    Assignee: Biglobe, Inc.
    Inventors: Nobuyuki Enomoto, Takanori Hiroshima, Kazuhiko Nakahara, Masafumi Kawaseki
  • Publication number: 20150282085
    Abstract: To provide a terminal management apparatus capable of improving convenience in a state that power consumption is suppressed. A communication section 501 receives reporting information notifying the presence of a notification utilizing a first communication function directed to a terminal 510. When the communication section 501 has received the reporting information, a control section 502 transmits a message indicating the presence of the notification, to the terminal 510 by using a second communication function different from the first communication function.
    Type: Application
    Filed: March 19, 2015
    Publication date: October 1, 2015
    Applicant: BIGLOBE INC.
    Inventors: Nobuyuki ENOMOTO, Takanori HIROSHIMA, Kazuhiko NAKAHARA, Masafumi KAWASEKI
  • Patent number: 8546510
    Abstract: Provided are a crystalline resin cured product which shows high thermal conductivity, low thermal expansion, high heat resistance, low moisture absorption, and good gas barrier properties and a crystalline resin composite material produced therefrom. Further provided is a method for producing the crystalline resin cured product and the crystalline resin composite material. The crystalline resin cured product is obtained by the reaction of an aromatic diglycidyl compound or a diglycidyl resin with an aromatic dihydroxy compound or with a dihydroxy resin and it shows a heat of melting of 10 J/g or more in differential thermal analysis while the endothermic peak corresponding to the melting appears in the range of 120 to 320° C. The crystalline resin composite material is obtained by combining the crystalline resin cured product with a filler or a base material. The crystalline resin cured product has a unit represented by -A-O—CH2—CH(OH)—CH2—O—B—, wherein A and B are divalent aromatic groups.
    Type: Grant
    Filed: November 8, 2007
    Date of Patent: October 1, 2013
    Assignee: Nippon Steel & Sumikin Chemical Co., Ltd.
    Inventors: Masashi Kaji, Koichiro Ogami, Kazuhiko Nakahara, Tomomi Fukunaga
  • Patent number: 8268940
    Abstract: Disclosed is a halogen- and phosphorus-free flame-retardant adhesive resin composition which can be used in heat contact bonding of adherends at or below 250° C. and is excellent in heat resistance, solder heat resistance after moisture absorption, and processability. Also disclosed is an adhesive film produced from said composition. The flame-retardant adhesive resin composition comprises 65-98% by weight of a silicone unit-containing polyimide resin and 2-35% by weight of an epoxy resin having an acenaphthylene-substituted naphthalene skeleton. The adhesive film produced from the flame-retardant adhesive resin composition is suitable as an adhesive for a laminate for a multiplayer printed circuit board substrate, an adhesive for a hybrid circuit board substrate, and an adhesive for a coverlay film.
    Type: Grant
    Filed: March 6, 2008
    Date of Patent: September 18, 2012
    Assignee: Nippon Steel Chemical Co., Ltd.
    Inventors: Akira Mori, Kiwamu Tokuhisa, Kazuhiko Nakahara, Masashi Kaji
  • Patent number: 7892312
    Abstract: A nitrification inhibitor and a soil improver and a fertilizer containing the same are offered which can be utilized in a wide area from a tropical to a temperate zone, and can be easily obtained from natural origin materials. It is a nitrification inhibitor to inhibit soil nitrification, containing as a main component either one of linoleic acid, ?-linolenic acid, ?-linolenic acid, and methyl linoleate, or their mixture of two or more. By incorporating this nitrification inhibitor into a soil improver or a fertilizer, nitrification of soil can be effectively inhibited.
    Type: Grant
    Filed: August 4, 2006
    Date of Patent: February 22, 2011
    Assignee: Japan International Research Center for Agricultural Sciences
    Inventors: Guntur V. Subbarao, Kazuhiko Nakahara, Takayuki Ishikawa, Osamu Ito, Hiroshi Ono, Mayumi Kameyama, Mitsuru Yoshida, Marco Rondon, Idupulapati Madhusudana Rao, Carlos Lascano, Manabu Ishitani
  • Publication number: 20100063217
    Abstract: Disclosed is a halogen- and phosphorus-free flame-retardant adhesive resin composition which can be used in heat contact bonding of adherends at or below 250° C. and is excellent in heat resistance, solder heat resistance after moisture absorption, and processability. Also disclosed is an adhesive film produced from said composition. The flame-retardant adhesive resin composition comprises 65-98% by weight of a silicone unit-containing polyimide resin and 2-35% by weight of an epoxy resin having an acenaphthylene-substituted naphthalene skeleton. The adhesive film produced from the flame-retardant adhesive resin composition is suitable as an adhesive for a laminate for a multiplayer printed circuit board substrate, an adhesive for a hybrid circuit board substrate, and an adhesive for a coverlay film.
    Type: Application
    Filed: March 6, 2008
    Publication date: March 11, 2010
    Inventors: Akira Mori, Kiwamu Tokuhisa, Kazuhiko Nakahara, Masashi Kaji
  • Publication number: 20100016473
    Abstract: Provided are a crystalline resin cured product which shows high thermal conductivity, low thermal expansion, high heat resistance, low moisture absorption, and good gas barrier properties and a crystalline resin composite material produced therefrom. Further provided is a method for producing the crystalline resin cured product and the crystalline resin composite material. The crystalline resin cured product is obtained by the reaction of an aromatic diglycidyl compound or a diglycidyl resin with an aromatic dihydroxy compound or with a dihydroxy resin and it shows a heat of melting of 10 J/g or more in differential thermal analysis while the endothermic peak corresponding to the melting appears in the range of 120 to 320° C. The crystalline resin composite material is obtained by combining the crystalline resin cured product with a filler or a base material. The crystalline resin cured product has a unit represented by -A-O—CH2—CH(OH)—CH2—O—B—, wherein A and B are divalent aromatic groups.
    Type: Application
    Filed: November 8, 2007
    Publication date: January 21, 2010
    Applicant: NIPPON STEEL CHEMICAL CO., LTD
    Inventors: Masashi Kaji, Koichiro Ogami, Kazuhiko Nakahara, Tomomi Fukunaga
  • Publication number: 20100016498
    Abstract: Disclosed is an epoxy resin composition that cures with high thermal conductivity and low thermal expansion and is capable of dissipating heat efficiently and displaying good dimensional stability when applied to encapsulation of semiconductor devices or to printed wiring boards. The epoxy resin composition is formulated from epoxy resins 50 wt % or more of which is a diphenyl ether type epoxy resin represented by the following general formula (1) (wherein n is a number of ?0 and m is an integer of 1-3) and curing agents 20 wt % or more of which is a diphenyl ether type phenolic resin represented by the following general formula (2) (wherein n is a number of ?0 and m is an integer of 1-3).
    Type: Application
    Filed: May 8, 2006
    Publication date: January 21, 2010
    Inventors: Masashi Kaji, Koichiro Ogami, Kazuhiko Nakahara
  • Publication number: 20080307843
    Abstract: A nitrification inhibitor and a soil improver and a fertilizer containing the same are offered which can be utilized in a wide area from a tropical to a temperate zone, and can be easily obtained from natural origin materials. It is a nitrification inhibitor to inhibit soil nitrification, containing juglone as a main component. By incorporating this nitrification inhibitor into a soil improver or a fertilizer, nitrification of soil can be effectively inhibited. The nitrification inhibitor is preferably contained in a soil improver or a fertilizer in the range of 20 to 50% weight %.
    Type: Application
    Filed: September 10, 2007
    Publication date: December 18, 2008
    Applicant: JAPAN INTERNATIONAL RESEARCH CENTER FOR AGRICULTURAL SCIENCES
    Inventors: Guntur V. Subbarao, Kazuhiko Nakahara, Takayuki Ishikawa
  • Publication number: 20070293969
    Abstract: According to the present invention, mounting conditions are determined to become closer to a setting value of a parameter regarding electricity consumption. The present invention provides a method of determining mounting conditions under which a piece of equipment mounts a component onto a substrate. The method includes: obtaining a setting value of a parameter regarding electricity consumption required to mount the component; obtaining an actual value of the parameter based on current mounting conditions; and determining new mounting conditions based on a result of comparing the setting value with the actual value.
    Type: Application
    Filed: February 8, 2006
    Publication date: December 20, 2007
    Inventors: Wataru Hirai, Yasuhiro Maenishi, Hiroaki Kurata, Chikashi Konishi, Kazuhiko Nakahara, Masakatsu Fujita, Takuya Yamazaki, Takaaki Yokoi
  • Publication number: 20070028659
    Abstract: A nitrification inhibitor and a soil improver and a fertilizer containing the same are offered which can be utilized in a wide area from a tropical to a temperate zone, and can be easily obtained from natural origin materials. It is a nitrification inhibitor to inhibit soil nitrification, containing as a main component either one of linoleic acid, ?-linolenic acid, ?-linolenic acid, and methyl linoleate, or their mixture of two or more. By incorporating this nitrification inhibitor into a soil improver or a fertilizer, nitrification of soil can be effectively inhibited.
    Type: Application
    Filed: August 4, 2006
    Publication date: February 8, 2007
    Applicants: JAPAN INTERNATIONAL RESEARCH CENTER FOR AGRICULTURE SCIENCES, CENTRO INTERNACIONAL DE AGRICULTURA TROPICAL
    Inventors: Guntur Subbarao, Kazuhiko Nakahara, Takayuki Ishikawa, Osamu Ito, Hiroshi Ono, Mayumi Kameyama, Mitsuru Yoshida, Marco Rondon, Idupulapati Rao, Carlos Lascano, Manabu Ishitani