Patents by Inventor Masahiro Hirano

Masahiro Hirano 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: 20110002832
    Abstract: Disclosed is a superconducting compound which has a structure obtained by partially substituting oxygen ions of a compound, which is represented by the following chemical formula; LnTMOPh [wherein Ln represents at least one element selected from Y and rare earth metal elements (La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu), TM represents at least one element selected from transition metal elements (Fe, Ru, Os, Ni, Pd and Pt), and Pn represents at least one element selected from pnictide elements (N, P, As and Sb)] and has a ZrCuSiAs-type crystal structure (space group P4/nmm), with at least one kind of monovalent anion (F?, Cl? or Br?). The superconducting compound alternatively has a structure obtained by partially substituting Ln ions of the compound with at least one kind of tetravalent metal ion (Ti4+, Zr4+, Hf4+, C4+, Si4+, Ge4+, Sn4+ or Pb4+) or a structure obtained by partially substituting Ln ions of the compound with at least one kind of divalent metal ion (Mg2+, Ca2+, Sr2+ or Ba2+).
    Type: Application
    Filed: February 17, 2009
    Publication date: January 6, 2011
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Hideo Hosono, Yoichi Kamihara, Masahiro Hirano, Toshio Kamiya, Hiroshi Yanagi
  • Patent number: 7824746
    Abstract: A liquid crystal sealing material comprising (a) a radiation curable resin represented by the general formula (1) below, (b) a photopolymerization initiator and (c) a filler having an average particle diameter of not more than 3 ?m. (In the formula (1), R1 represents a hydrogen atom or a methyl group; R2 may be the same or different and represents a hydrogen atom, a halogen atom, a hydroxyl group, a monovalent linear, branched or cyclic alkyl group having 1-10 carbon atoms or an alkoxy group having 1-10 carbon atoms; m represents an integer of 1-4; R3 represents a hydrogen atom or a methyl group; R4 represents a linear, branched or cyclic alkyl group having 1-10 carbon atoms; 1 represents a range of positive numbers from 1 to 5; and the repeating unit number n represents a range of positive numbers from 0 to 20.
    Type: Grant
    Filed: October 12, 2005
    Date of Patent: November 2, 2010
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Masahiro Imaizumi, Yasumasa Akatuka, Naoyuki Ochi, Eiichi Nishihara, Masaru Kudou, Toyohumi Asano, Naoki Toneda, Masahiro Hirano
  • Patent number: 7722846
    Abstract: Provided is a method for preparing an electroconductive mayenite type compound with good properties readily and stably at low cost. A production method of an electroconductive mayenite type compound comprising a step of subjecting a precursor to heat treatment, is a method for preparing an electroconductive mayenite type compound, comprising a step of subjecting a precursor to heat treatment; wherein the precursor is a vitreous or crystalline material, which contains Ca and Al, in which a molar ratio of (CaO:Al2O3) is from (12.6:6.4) to (11.7:7.3) as calculated as oxides, and in which a total amount of CaO and Al2O3 is at least 50 mol %, and wherein the heat treatment is heat treatment comprising holding the precursor at a heat treatment temperature T of from 600 to 1415° C. and in an inert gas or vacuum atmosphere with an oxygen partial pressure PO2 in a range of PO2?105×exp [{?7.9×l04/(T+273)}+14.4] in the unit of Pa.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: May 25, 2010
    Assignees: Asahi Glass Company, Limited, Tokyo Institute of Technology
    Inventors: Hideo Hosono, Katsuro Hayashi, Sung Wng Kim, Masahiro Hirano, Satoru Narushima, Setsuro Ito
  • Patent number: 7696386
    Abstract: The invention is a process of using, as a reducing agent, a 12CaO.7Al2O3 electride containing electrons in a number of 1019 or more and 2.3×1021 cm?3 or less in its cages to subject a carbonyl compound to reductive coupling in a solvent, thereby synthesizing a diol or polydiol. The invention is also a process of reducing a ketone compound in a solvent, thereby synthesizing a secondary alcohol or diketone compound. According to the process of the invention, it is possible to synthesize a diol or polydiol, or a secondary alcohol or diketone compound through simple operations in a short period without using an expensive and harmful metal hydride or metal salt nor limiting the atmosphere for the synthesis to an inert gas atmosphere as in conventional processes.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: April 13, 2010
    Assignee: Japan Science and Technology Agency
    Inventors: Hideo Hosono, Haritha Buchammagari, Yoshitake Toda, Masahiro Hirano, Kohtaro Osakada, Daisuke Takeuchi
  • Patent number: 7678433
    Abstract: An objective of this application is to provide a sealant for liquid crystals witch is extremely less apt to contaminate liquid crystals and has high adhesion strength. This application discloses a sealant for liquid crystals comprising as essential ingredients (a) a radiation-curable resin represented by the general formula (1): wherein R1 represents a hydrogen atom or a methyl group, R2 represents a hydrogen atom, a halogen atom, a hydroxyl group, a linear, branch or cyclic monovalent alkyl group having 1 to 10 carbon atoms, or an alkoxy group having 1 to 10 carbon atoms, m represents an integer of 1 to 4, and may be the same or different, R3 represents a hydrogen atom or a methyl group, and the number n of the repeating units is a positive number in the range of 0 to 20; (b) a photopolymerization initiator; and (c) an inorganic filler having an average particle diameter of 3 ?m or less.
    Type: Grant
    Filed: May 18, 2004
    Date of Patent: March 16, 2010
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Naoyuki Ochi, Toyofumi Asano, Masahiro Imaizumi, Masaru Kudo, Eiichi Nishihara, Hiroo Koyanagi, Sumio Ichimura, Masahiro Hirano
  • Patent number: 7670585
    Abstract: Provided is a method for preparing an electroconductive mayenite type compound with good properties readily and stably at low cost without need for expensive facilities, a reaction at high temperature and for a long period of time, or complicated control of reaction. A method for preparing an electroconductive mayenite type compound comprises a step of subjecting a precursor to heat treatment, wherein the precursor contains Ca and/or Sr, and Al, a molar ratio of (a total of CaO and SrO:Al2O3) is from (12.6:6.4) to (11.7:7.3) as calculated as oxides, a total content of CaO, SrO and Al2O3 in the precursor is at least 50 mol %, and the precursor is a vitreous or crystalline material; and the method comprises a step of mixing the precursor with a reducing agent and performing the heat treatment of holding the mixture at 600-1,415° C. in an inert gas or vacuum atmosphere with an oxygen partial pressure of at most 10 Pa.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: March 2, 2010
    Assignees: Asahi Glass Company, Limited, Tokyo Institute of Technology
    Inventors: Hideo Hosono, Katsuro Hayashi, Sung Wng Kim, Masahiro Hirano, Satoru Narushima, Setsuro Ito
  • Patent number: 7662357
    Abstract: Disclosed is a 12CaO.7Al2O3 compound, a 12SrO.7Al2O3 compound, or a mixed crystal compound of 12CaO.7Al2O3 and 12SrO.7Al2O3, which contains a negative hydrogen ion (H?, H2?, H2? at a concentration of 1×1018 cm?3 or more. A negative hydrogen ion comprising a primary component of a hydride ion is incorporated into C12A7 (12CaO.7Al2O3), so that a function of being converted from an insulative material to an electrically conductive material in a sustained manner by means of irradiation with light can be exhibited even in the normal atmosphere at a room temperature. The present invention also provides a solid electrolyte capable of conducting a negative hydrogen ion, and means for releasing a hydride ion from the inside of a solid into a gaseous phase using an electric field.
    Type: Grant
    Filed: April 18, 2003
    Date of Patent: February 16, 2010
    Assignee: Japan Science and Technology Agency
    Inventors: Hideo Hosono, Masahiro Hirano, Katsuro Hayashi
  • Publication number: 20090278122
    Abstract: The present invention relates to an amorphous oxide and a thin film transistor using the amorphous oxide. In particular, the present invention provides an amorphous oxide having an electron carrier concentration less than 1018/cm3, and a thin film transistor using such an amorphous oxide. In a thin film transistor having a source electrode 6, a drain electrode 5, a gate electrode 4, a gate insulating film 3, and a channel layer 2, an amorphous oxide having an electron carrier concentration less than 1018/cm3 is used in the channel layer 2.
    Type: Application
    Filed: July 16, 2009
    Publication date: November 12, 2009
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Hideo HOSONO, Masahiro HIRANO, Hiromichi OTA, Toshio KAMIYA, Kenji NOMURA
  • Publication number: 20090280600
    Abstract: The present invention relates to an amorphous oxide and a thin film transistor using the amorphous oxide. In particular, the present invention provides an amorphous oxide having an electron carrier concentration less than 1018/cm3, and a thin film transistor using such an amorphous oxide. In a thin film transistor having a source electrode 6, a drain electrode 5, a gate electrode 4, a gate insulating film 3, and a channel layer 2, an amorphous oxide having an electron carrier concentration less than 1018/cm3 is used in the channel layer 2.
    Type: Application
    Filed: July 16, 2009
    Publication date: November 12, 2009
    Applicant: Japan Science and Technology Agency
    Inventors: Hideo HOSONO, Masahiro HIRANO, Hiromichi OTA, Toshio KAMIYA, Kenji NOMURA
  • Publication number: 20090275255
    Abstract: [Problems] To provide a liquid crystal sealing material having an extremely low possibility of contaminating liquid crystals and a high bond strength. [Means For Solving Problems] A liquid crystal sealing material comprising: (a) a resin obtained by (meth)acryloylating an epoxy resin (A) represented by formula (1); (b) a photopolymerization initiator; and (c) an inorganic filler having a mean particle diameter of 3 ?m or less, wherein a ratio of a p,p? isomer in a bisphenol F monomer unit constituting the epoxy resin (A) accounts for 40% or more, (wherein a repeating unit number z is in a range of 0 to 2).
    Type: Application
    Filed: December 20, 2005
    Publication date: November 5, 2009
    Inventors: Masahiro Imaizumi, Masaru Kudou, Makoto Ohla, Naoyuki Ochi, Eiichi Nishihara, Toyohumi Asano, Masahiro Hirano
  • Publication number: 20090240085
    Abstract: The invention is a process of using, as a reducing agent, a 12CaO.7Al2O3 electride containing electrons in a number of 1019 or more and 2.3×1021 cm?3 or less in its cages to subject a carbonyl compound to reductive coupling in a solvent, thereby synthesizing a diol or polydiol. The invention is also a process of reducing a ketone compound in a solvent, thereby synthesizing a secondary alcohol or diketone compound. According to the process of the invention, it is possible to synthesize a diol or polydiol, or a secondary alcohol or diketone compound through simple operations in a short period without using an expensive and harmful metal hydride or metal salt nor limiting the atmosphere for the synthesis to an inert gas atmosphere as in conventional processes.
    Type: Application
    Filed: September 28, 2007
    Publication date: September 24, 2009
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Hideo Hosono, Haritha Buchammagari, Yoshitake Toda, Masahiro Hirano, Kohtaro Osakada, Daisuke Takeuchi
  • Publication number: 20090224214
    Abstract: In an electride C12A7 provided by replacing free oxygen in 12CaO.7Al2O3 with electrons, a material having metallic electroconductivity and an electric conductivity of more than 5×102 S/cm at room temperature could not have been produced without difficulties. An electride 12CaO.7Al2O3, which has metallic electroconductivity and has an electric conductivity of more than 5×102 S/cm at room temperature, can be produced by heat-treating titanium metal vapor and 12CaO.7Al2O3 single crystal, sinter, or thin film at a temperature above 600° C. and below 1,450° C. for less than 240 hours. Further, thermoelectric field electron release can also be realized using an electron release chip fabricated from the electride.
    Type: Application
    Filed: November 17, 2006
    Publication date: September 10, 2009
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Hideo Hosono, Sungwng Kim, Katsurou Hayashi, Masashi Miyakawa, Satoru Matsuishi, Toshio Kamiya, Masahiro Hirano, Yoshitake Toda
  • Publication number: 20090188616
    Abstract: Disclosed is a sealing material for liquid crystals having high adhesion strength and excellent gap-forming power at bonding of panels. Also disclosed are a method for producing such a sealing material and a method for producing a liquid crystal display cell which is improved in productivity, high-speed response and reliability. The sealing material for liquid crystals is produced through a step wherein fine particles (D) having an average particle size of not more than 3 ?m are dispersed, using a wet dispersion unit (A), in a reactive resin (C) having an epoxy group and/or a (meth)acryloyl group which resin has been dissolved in a solvent (B) and a following step wherein the solvent (B) is removed.
    Type: Application
    Filed: March 20, 2009
    Publication date: July 30, 2009
    Inventors: Masahiro Imaizumi, Naoyuki Ochi, Toyofumi Asano, Eiichi Nishihara, Masahiro Hirano, Takumi Kobayashi
  • Patent number: 7521100
    Abstract: The present invention relates to a sealant for liquid crystals having extremely low contamination nature to a liquid crystal, excellent coatability and bondability to a substrate, long service life and pot life and high adhesive strength. A sealant for liquid crystals of the present invention is characterized by comprising (a) an epoxy resin represented by general formula (1): (wherein a represents an integer of 2 to 4; n represents 0 to 3 (average value); R represents a divalent hydrocarbon group of 2 to 6 carbon atoms; A represents a polyvalent aromatic group; and G represents a glycidyl group, provided that when n is 0, (a) an epoxy resin represented by general formula (1) is a bisphenol S-type.), (b) a thermo-curing agent, (c) and a filler having average particle diameter of not larger than 3 ?m.
    Type: Grant
    Filed: April 6, 2004
    Date of Patent: April 21, 2009
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Masahiro Imaizumi, Toyofumi Asano, Naoyuki Ochi, Masahiro Hirano, Sumio Ichimura, Masaru Kudo, Katsuhiko Oshimi, Masataka Nakanishi, Yasumasa Akatsuka, Eiichi Nishihara, Masayuki Itai
  • Patent number: 7521099
    Abstract: To provide a photopolymerization initiator having an extremely low possibility of contaminating liquid crystals, and a liquid crystal sealing material using such a photopolymerization initiator. A liquid crystal sealing material comprising (a) a reactive photopolymerization initiator represented by the general formula (1) and (b) a photocurable resin: (wherein R1 represents a divalent straight chain, branched or cyclic lower alkylene group having 1 to 10 carbon atoms or an arylene group; R2 represents a divalent straight chain, branched or cyclic lower alkylene group having 1 to 10 carbon atoms or an arylene group; Ar represents an arylene group; R3 represents a hydrogen atom or a methyl group; X and Y respectively represent O or S; and Z is a hydroxyl group or a morpholino group).
    Type: Grant
    Filed: August 31, 2005
    Date of Patent: April 21, 2009
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Naoyuki Ochi, Toyohumi Asano, Masahiro Imaizumi, Masaru Kudou, Eiichi Nishihara, Masahiro Hirano, Kouta Yoshii, Sumio Itimura, Makiko Kogo
  • Patent number: 7507289
    Abstract: In a solid solution system of Al2O3 and CAO or SrO, it has been difficult to obtain a material having a high electrical conductivity (>10?4 S·cm?) at room temperature. A compound is provided in which electrons at a high concentration are introduced into a 12CaO.7Al2O3 compound, a 12SrO.7Al2O3 compound, or a mixed crystal compound containing 12CaO.7Al2O3 and 12SrO.7Al2O3. The compound formed by substituting all the free oxygen ions with electrons is regarded as an electride compound in which [Ca24Al28O64]4+(4e?) or [Sr24Al28O64]4+(4e?) serves as a cation and electrons serve as anions. When a single crystal or a hydrostatic pressure press molded material of a fine powder thereof is held at approximately 700° C. in an alkaline metal vapor or an alkaline earth metal vapor, melt of a hydrostatic pressure press molded material of a powder is held at approximately 1,600° C. in a carbon crucible, followed by slow cooling for solidification, or a thin film of the compound held at approximately 600° C.
    Type: Grant
    Filed: February 12, 2004
    Date of Patent: March 24, 2009
    Assignee: Japan Science and Technology Agency
    Inventors: Hideo Hosono, Masahiro Hirano, Katsuro Hayashi, Masashi Miyakawa, Isao Tanaka
  • Publication number: 20090042058
    Abstract: A magnetic semiconductor material contains at least one type of transition metals (Mn2+, Fe3+, Ru3+, Re2+, and Os3+) having five electrons in the d atomic orbital as a magnetic ion, in which the magnetic semiconductor material exhibits n-type electrical conduction by injection of an electron carrier and p-type electric conduction by injection of a hole carrier. A specific example is a layered oxy-pnictide compound represented by LnMnOPn (wherein Ln is at least one type selected from Y and rare earth elements of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, and Pn is at least one selected from pnicogen elements of N, P, As, Bi, and Sb). A high-sensitivity magnetic sensor, current sensor, or memory device can be made by using a magnetic pn homojunction structure made of thin films composed of the magnetic semiconductor material.
    Type: Application
    Filed: August 1, 2006
    Publication date: February 12, 2009
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Hideo Hosono, Masahiro Hirano, Hidenori Hiramatsu, Toshio Kamiya, Hiroshi Yanagi, Eiji Motomitsu
  • Patent number: 7465433
    Abstract: To provide a method for preparing a mayenite type compound having electroconductivity imparted. A method for preparing an electroconductive mayenite type compound, which comprises melting a raw material containing Al and at least one element selected from the group consisting of Ca and Sr, holding the melt in a low oxygen partial pressure atmosphere having an oxygen partial pressure of not higher than 10 Pa, followed by cooling or annealing in a low oxygen partial pressure atmosphere or in atmospheric air for solidification, thereby to replace oxygen present in cages by electrons in a high concentration.
    Type: Grant
    Filed: August 14, 2006
    Date of Patent: December 16, 2008
    Assignees: Asahi Glass Company, Limited, Japan Science and Technology Agency
    Inventors: Hideo Hosono, Katsuro Hayashi, Masashi Miyakawa, Masahiro Hirano, Sungwng Kim, Setsuro Ito, Satoru Narushima
  • Publication number: 20080305707
    Abstract: [Problems] To provide a radiation curable resin having an extremely low possibility of contaminating liquid crystals, and a liquid crystal sealing material using such a photopolymerization initiator. [Means for Solving Problems] A liquid crystal sealing material characterized by comprising (a) a radiation curable resin represented by the general formula (1) below, (b) a photopolymerization initiator and (c) a filler having an average particle diameter of not more than 3 ?m.
    Type: Application
    Filed: October 12, 2005
    Publication date: December 11, 2008
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Masahiro Imaizumi, Yasumasa Akatuka, Naoyuki Ochi, Eiichi Nishihara, Masaru Kudou, Toyohumi Asano, Naoki Toneda, Masahiro Hirano
  • Patent number: 7462334
    Abstract: The present invention provides a method for producing negatively charged oxygen atoms comprising: placing a negative electrode (3) on a surface of a member (2) made of calcium-aluminum composite oxide, proximately placing a positive electrode (10) on a side of the member opposite to the surface on which the negative electrode is placed, supplying oxygen to the negative electrode side, and applying voltage between the negative electrode and the positive electrode so as to extract negatively charged oxygen atoms (A) from the side where the positive electrode (10) is placed. The present invention also provides an apparatus for producing negatively charged oxygen atoms which is used for the above method.
    Type: Grant
    Filed: December 11, 2002
    Date of Patent: December 9, 2008
    Assignees: Japan Science and Technology Agency, Oxy Japan Company Limited
    Inventors: Hideo Hosono, Katsuro Hayashi, Masahiro Hirano, Masayoshi Sadakata