Patents by Inventor Yasushi Kurata

Yasushi Kurata 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: 9714262
    Abstract: A composition for forming a passivation layer, comprising a compound represented by Formula (I): M(OR1)m. In Formula (I), M comprises at least one metal element selected from the group consisting of Nb, Ta, V, Y and Hf, each R1 independently represents an alkyl group having from 1 to 8 carbon atoms or an aryl group having from 6 to 14 carbon atoms, and m represents an integer from 1 to 5.
    Type: Grant
    Filed: July 19, 2013
    Date of Patent: July 25, 2017
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Shuichiro Adachi, Masato Yoshida, Takeshi Nojiri, Yasushi Kurata, Tooru Tanaka, Akihiro Orita, Tsuyoshi Hayasaka, Takashi Hattori, Mieko Matsumura, Keiji Watanabe, Masatoshi Morishita, Hirotaka Hamamura
  • Publication number: 20160359078
    Abstract: A composition for forming an n-type diffusion layer, comprising glass particles that comprise a donor element, a dispersing medium, and an organometallic compound; a method of forming an n-type diffusion layer; a method of producing a semiconductor substrate with n-type diffusion layer; and a method of producing a photovoltaic cell element.
    Type: Application
    Filed: August 20, 2014
    Publication date: December 8, 2016
    Applicant: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Tetsuya SATO, Masato YOSHIDA, Takeshi NOJIRI, Yasushi KURATA, Toranosuke ASHIZAWA, Yoichi MACHII, Mitsunori IWAMURO, Akihiro ORITA, Mari SHIMIZU, Elichi SATOU
  • Publication number: 20160211389
    Abstract: A composition for forming a passivation layer, including a resin and a compound represented by Formula (I): M(OR1)m. In Formula (I), M includes at least one metal element selected from the group consisting of Nb, Ta, V, Y and Hf, each R1 independently represents an alkyl group having from 1 to 8 carbon atoms or an aryl group having from 6 to 14 carbon atoms, and m represents an integer from 1 to 5.
    Type: Application
    Filed: March 24, 2016
    Publication date: July 21, 2016
    Inventors: Tooru TANAKA, Masato YOSHIDA, Takeshi NOJIRI, Yasushi KURATA, Akihiro ORITA, Shuichiro ADACHI, Tsuyoshi HAYASAKA, Takashi HATTORI, Mieko MATSUMURA, Keiji WATANABE, Masatoshi MORISHITA, Hirotaka HAMAMURA
  • Publication number: 20160118513
    Abstract: A composition for forming an electrode includes a phosphorus-containing copper alloy particle, a tin-containing particle, a specific metal element M-containing particle, a glass particle, a solvent and a resin, in which M is at least one selected from the group consisting of Li, Be, Na, Mg, K, Ca, Rb, Sr, Cs, Ba, Fr, Ra, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Y, Zr, Nb, Mo, Tc, Ru, Pd, Ag, Cd, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, W, Re, Os, Ir, Pt, Au, Hg, Al, Ga, Ge, In, Sb, Tl, Pb, Bi and Po.
    Type: Application
    Filed: May 13, 2013
    Publication date: April 28, 2016
    Inventors: Shuichiro ADACHI, Masato YOSHIDA, Takeshi NOJIRI, Yasushi KURATA, Yoshiaki KURIHARA, Takahiko KATO
  • Patent number: 9293344
    Abstract: The present invention relates to a CMP polishing slurry comprising cerium oxide particles, a dispersant, a water-soluble polymer and water, wherein the water-soluble polymer is a polymer obtained in polymerization of a monomer containing at least one of a carboxylic acid having an unsaturated double bond and the salt thereof by using at least one of a cationic azo compound and the salt thereof as a polymerization initiator. The present invention provides a polishing slurry and a polishing method allowing polishing efficiently uniformly at high speed without scratch and also allowing easy process management in the CMP technology of smoothening an interlayer dielectric film, BPSG film, and insulation film for shallow trench isolation.
    Type: Grant
    Filed: July 20, 2005
    Date of Patent: March 22, 2016
    Assignee: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Masato Fukasawa, Naoyuki Koyama, Yasushi Kurata, Kouji Haga, Toshiaki Akutsu, Yuuto Ootsuki
  • Publication number: 20150228812
    Abstract: A composition for forming a passivation layer, including a resin and a compound represented by Formula (I): M(OR1)m. In Formula (I), M includes at least one metal element selected from the group consisting of Nb, Ta, V, Y and Hf, each R1 independently represents an alkyl group having from 1 to 8 carbon atoms or an aryl group having from 6 to 14 carbon atoms, and m represents an integer from 1 to 5.
    Type: Application
    Filed: July 19, 2013
    Publication date: August 13, 2015
    Inventors: Tooru Tanaka, Masato Yoshida, Takeshi Nojira, Yasushi Kurata, Akihiro Orita, Shuichiro Adachi, Tsuyoshi Hayasaka, Takashi Hattori, Mieko Matsumura, Keiji Watanabe, Masatoshi Morishita, Hirotaka Hamamura
  • Publication number: 20150179829
    Abstract: The composition for forming a passivation layer includes an organic aluminum compound represented by Formula (I) and an organic compound represented by Formula (II). In Formula (I), each R1 independently represents an alkyl group having from 1 to 8 carbon atoms. n represents an integer from 0 to 3. Each of X2 and X3 independently represents an oxygen atom or a methylene group. Each of R2, R3 and R4 independently represents a hydrogen atom, or an alkyl group having from 1 to 8 carbon atoms.
    Type: Application
    Filed: July 12, 2013
    Publication date: June 25, 2015
    Inventors: Tooru Tanaka, Masato Yoshida, Yasushi Kurata, Akihiro Orita, Tetsuya Sato, Tsuyoshi Hayasaka
  • Publication number: 20150166582
    Abstract: A composition for forming a passivation layer, comprising a compound represented by Formula (I): M(OR1)m. In Formula (I), M comprises at least one metal element selected from the group consisting of Nb, Ta, V, Y and Hf, each R1 independently represents an alkyl group having from 1 to 8 carbon atoms or an aryl group having from 6 to 14 carbon atoms, and m represents an integer from 1 to 5.
    Type: Application
    Filed: July 19, 2013
    Publication date: June 18, 2015
    Inventors: Shuichiro Adachi, Masato Yoshida, Takeshi Nojiri, Yasushi Kurata, Tooru Tanaka, Akihiro Orita, Tsuyoshi Hayasaka, Takashi Hattori, Mieko Matsumura, Keiji Watanabe, Masatoshi Morishita, Hirotaka Hamamura
  • Patent number: 8999281
    Abstract: The scintillator single crystal of the invention comprises a cerium-activated orthosilicate compound represented by the following general formula (1). The scintillator single crystal of the invention exhibits improved scintillation properties by reduced segregation between elements in the crystal ingot. Lm2?(x+y+z)LnxLuyCezSiO5??(1) (Wherein Lm represents at least one element selected from among Sc and Y and lanthanoid elements with lower atomic numbers than Lu, Ln represents at least one element selected from among Sc, Y, B, Al, Ga and In and lanthanoid elements with ion radii intermediate between Lm and Lu, x represents a value of greater than zero and no greater than 0.5, y represents a value of greater than 1 and less than 2, and z represents a value of greater than zero and no greater than 0.1.).
    Type: Grant
    Filed: May 30, 2008
    Date of Patent: April 7, 2015
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Yasushi Kurata, Naoaki Shimura, Tatsuya Usui
  • Publication number: 20150069298
    Abstract: The scintillator single crystal of the invention comprises a cerium-activated orthosilicate compound represented by the following formula (1). Gd2?(a+x+y+z)LnaLuxCeyLmzSiO5??(1) (In formula (1), Lm represents at least one element selected from among Pr, Tb and Tm, Ln represents at least one element selected from among lanthanoid elements excluding Pr, Tb and Tm, and Sc, and Y, a represents a value of at least 0 and less than 1, x represents a value of greater than 1 and less than 2, y represents a value of greater than 0 and no greater than 0.01, and z represents a value of greater than 0 and no greater than 0.01. The value of a+x+y+z is no greater than 2.
    Type: Application
    Filed: November 17, 2014
    Publication date: March 12, 2015
    Applicant: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Yasushi Kurata, Tatsuya Usui, Naoaki Shimura
  • Publication number: 20150017754
    Abstract: The invention provides composition for forming an n-type diffusion layer, the composition comprising a compound containing a donor element, a dispersing medium, and an organic filler; a method for producing a semiconductor substrate having an n-type diffusion layer; and a method for producing a photovoltaic cell element.
    Type: Application
    Filed: January 10, 2013
    Publication date: January 15, 2015
    Inventors: Tetsuya Sato, Masato Yoshida, Takeshi Nojiri, Toranosuke Ashizawa, Yasushi Kurata, Yoichi Machii, Mitsunori Iwamuro, Akihiro Orita, Mari Shimizu
  • Publication number: 20140158196
    Abstract: An element of the present invention includes a silicon substrate; an electrode which is provided on the silicon substrate and which is a sintered product of a paste composition for an electrode containing a phosphorus-containing copper alloy particle, a glass particle, a solvent and a resin; and a solder layer containing a flux, which is provided on the electrode.
    Type: Application
    Filed: July 24, 2012
    Publication date: June 12, 2014
    Inventors: Yoshiaki Kurihara, Masato Yoshida, Takeshi Nojiri, Yasushi Kurata, Shuichiro Adachi, Takahiko Kato
  • Patent number: 8728232
    Abstract: A single crystal heat treatment method having a step of heating a single crystal of a specific cerium-doped silicate compound in an oxygen-poor atmosphere at a temperature T1 (units: ° C.) that satisfies the conditions represented by formula (3) below 800?T1<(Tm1?550)??(3) (wherein Tm1 (units: ° C.) represents the melting point of the single crystal).
    Type: Grant
    Filed: March 14, 2006
    Date of Patent: May 20, 2014
    Assignee: Hitachi Chemical Co., Ltd.
    Inventors: Tatsuya Usui, Naoaki Shimura, Yasushi Kurata, Kazuhisa Kurashige
  • Patent number: 8696929
    Abstract: A polishing slurry including an oxidant, a metal oxide dissolver, a metal inhibitor and water and having a pH from 2 to 5. The polishing slurry having a high metal-polishing rate, reducing etching rate and polishing friction, results in the production, with high productivity, of semiconductor devices reduced in dishing and erosion in metal wiring.
    Type: Grant
    Filed: June 6, 2007
    Date of Patent: April 15, 2014
    Assignee: Hitachi Chemical Co., Ltd.
    Inventors: Yasushi Kurata, Katsuyuki Masuda, Hiroshi Ono, Yasuo Kamigata, Kazuhiro Enomoto
  • Patent number: 8616936
    Abstract: To polish polishing target surfaces of SiO2 insulating films or the like at a high rate without scratching the surface, the present invention provides an abrasive comprising a slurry comprising a medium and dispersed therein at least one of i) cerium oxide particles constituted of at least two crystallites and having crystal grain boundaries or having a bulk density of not higher than 6.5 g/cm3 and ii) abrasive grains having pores. Also provided are a method of polishing a target member and a process for producing a semiconductor which make use of this abrasive.
    Type: Grant
    Filed: March 2, 2012
    Date of Patent: December 31, 2013
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Masato Yoshida, Toranosuke Ashizawa, Hiroki Terazaki, Yuuto Ootuki, Yasushi Kurata, Jun Matsuzawa, Kiyohito Tanno
  • Publication number: 20130042912
    Abstract: The solder bonded body according to the present invention contains: an oxide body to be bonded having an oxide layer on the surface thereof; and a solder layer bonded to the oxide layer, which the solder layer is formed by an alloy containing at least two metals selected from the group consisting of tin, copper, silver, bismuth, lead, aluminum, titanium and silicon and having a melting point of lower than 450° C. and has a zinc content of 1% by mass or less.
    Type: Application
    Filed: August 10, 2012
    Publication date: February 21, 2013
    Inventors: Yoshiaki KURIHARA, Masato Yoshida, Takeshi Nojiri, Shuichiro Adachi, Takashiko Kato, Yasushi Kurata
  • Publication number: 20120227331
    Abstract: To polish polishing target surfaces of SiO2 insulating films or the like at a high rate without scratching the surface, the present invention provides an abrasive comprising a slurry comprising a medium and dispersed therein at least one of i) cerium oxide particles constituted of at least two crystallites and having crystal grain boundaries or having a bulk density of not higher than 6.5 g/cm3 and ii) abrasive grains having pores. Also provided are a method of polishing a target member and a process for producing a semiconductor which make use of this abrasive.
    Type: Application
    Filed: March 2, 2012
    Publication date: September 13, 2012
    Inventors: Masato YOSHIDA, Toranosuke Ashizawa, Hiroki Terazaki, Yuuto Ootuki, Yasushi Kurata, Jun Matsuzawa, Kiyohito Tanno
  • Patent number: 8231735
    Abstract: The present invention is directed to a CMP polishing slurry comprising cerium oxide particles, an organic compound having an acetylene bond (triple bond between carbon and carbon) and water, and a method for polishing a substrate which comprises a step of polishing a film to be polished of the substrate with the polishing slurry. In a CMP (chemical mechanical polishing) technique for flattening inter layer dielectrics, insulating films for shallow trench isolation and the like in a manufacturing process of semiconductor devices, the present invention enables the effective and high-speed polishing.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: July 31, 2012
    Assignee: Hitachi Chemical Co., Ltd.
    Inventors: Kouji Haga, Yuto Ootsuki, Yasushi Kurata, Kazuhiro Enomoto
  • Patent number: 8168541
    Abstract: The present invention relates to a CMP polishing slurry, comprising cerium oxide particles, a dispersing agent, a water-soluble polymer and water, wherein the water-soluble polymer is a compound having a skeleton of any one of an N-mono-substituted product and an N,N-di-substituted product of any one selected from the group consisting of acrylamide, methacrylamide and ?-substituted products thereof. The amount of the water-soluble polymer is preferably in the range of 0.01 part or more by weight and 10 parts or less by weight for 100 parts by weight of the polishing slurry. Thus it is possible to provide a polishing slurry and a polishing method which make it possible to polish a film made of silicon oxide or the like effectively and rapidly and further control the process therefore easily in CMP technique for flattening an interlayer insulating film, a BPSG film, an insulator film for shallow trench isolation, and other films.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: May 1, 2012
    Assignee: Hitachi Chemical Co., Ltd.
    Inventors: Masato Fukasawa, Masato Yoshida, Naoyuki Koyama, Yuto Ootsuki, Chiaki Yamagishi, Kazuhiro Enomoto, Kouji Haga, Yasushi Kurata
  • Patent number: 8162725
    Abstract: To polish polishing target surfaces of SiO2 insulating films or the like at a high rate without scratching the surface, the present invention provides an abrasive comprising a slurry comprising a medium and dispersed therein at least one of i) cerium oxide particles constituted of at least two crystallites and having crystal grain boundaries or having a bulk density of not higher than 6.5 g/cm3 and ii) abrasive grains having pores. Also provided are a method of polishing a target member and a process for producing a semiconductor device which make use of this abrasive.
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: April 24, 2012
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Masato Yoshida, Toranosuke Ashizawa, Hiroki Terazaki, Yuuto Ootuki, Yasushi Kurata, Jun Matsuzawa, Kiyohito Tanno