Patents by Inventor Shingo Yamasaki

Shingo Yamasaki 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: 20120014831
    Abstract: The present invention provides a wire rod with a composition at least including: C: 0.95-1.30 mass %; Si: 0.1-1.5 mass %; Mn: 0.1-1.0 mass %; Al: 0-0.1 mass %; Ti: 0-0.1 mass %; P: 0-0.02 mass %; S: 0-0.02 mass %; N: 10-50 ppm; O: 10-40 ppm; and a balance including Fe and inevitable impurities, wherein 97% or more of an area in a cross-section perpendicular to the longitudinal direction of the wire rod is occupied by a pearlite, and 0.5% or less of an area in a central area in the cross-section and 0.5% or less of an area in a first surface layer area in the cross-section are occupied by a pro-eutectoid cementite.
    Type: Application
    Filed: October 19, 2010
    Publication date: January 19, 2012
    Inventors: Shingo Yamasaki, Toshiyuki Manabe, Daisuke Hirakami, Nariyasu Muroga
  • Publication number: 20110284139
    Abstract: A high-carbon steel wire rod of high ductility for steel cord and the like is provided that experiences little breakage during drawing. The high-carbon steel wire rod of high ductility is a high-carbon steel wire rod fabricated by hot rolling that that has a carbon content of 0.7 mass % or greater, wherein 95% or greater of the wire rod metallographic structure is pearlite structure and the maximum pearlite block size of pearlite at the core of the hot-rolled wire rod is 65 ?m or less. The high-carbon steel wire rod of high ductility has a tensile strength in a range of {248+980×(C mass %)}±40 MPa} and a reduction of area of {72.8?40×(C mass %) %} or greater. The high-carbon steel wire rod of high ductility is characterized in that the average pearlite block size at the core of the hot-rolled wire rod constituted by ferrite grain boundaries of an orientation difference of 9 degrees or greater as measured with an EBSP analyzer is 10 ?m or greater and 30 ?m or less.
    Type: Application
    Filed: May 31, 2011
    Publication date: November 24, 2011
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Seiki Nishida, Shingo Yamasaki, Hitoshi Demachi, Nariyasu Muroga, Shouichi Ohashi, Kenichi Nakamura, Makoto Kosaka, Nobuyuki Komiya, Susumu Sahara
  • Publication number: 20110268600
    Abstract: The invention provides a steel material with satisfactory hydrogen embrittlement resistance, and particularly it relates to high-strength steel with satisfactory hydrogen embrittlement resistance and a strength of 1200 MPa or greater, as well as a process for production thereof. At least one simple or compound deposit of oxides, carbides or nitrides as hydrogen trap sites which trap hydrogen with a specific trap energy is added to steel, where the mean sizes, number densities, and length-to-thickness ratios (aspect ratio) are in specific ranges. By applying the specific steel components and production process it is possible to obtain high-strength steel with excellent hydrogen embrittlement resistance.
    Type: Application
    Filed: July 15, 2011
    Publication date: November 3, 2011
    Applicant: Nippon Steel Corporation
    Inventors: Shingo YAMASAKI, Daisuke Hirakami, Toshimi Tarui, Seiki Nishida
  • Patent number: 8016953
    Abstract: The invention provides a steel material with satisfactory hydrogen embrittlement resistance, and particularly it relates to high-strength steel with satisfactory hydrogen embrittlement resistance and a strength of 1200 MPa or greater, as well as a process for production thereof. At least one simple or compound deposit of oxides, carbides or nitrides as hydrogen trap sites which trap hydrogen with a specific trap energy is added to steel, where the mean sizes, number densities, and length-to-thickness ratios (aspect ratio) are in specific ranges. By applying the specific steel components and production process it is possible to obtain high-strength steel with excellent hydrogen embrittlement resistance.
    Type: Grant
    Filed: January 20, 2004
    Date of Patent: September 13, 2011
    Assignee: Nippon Steel Corporation
    Inventors: Shingo Yamasaki, Daisuke Hirakami, Toshimi Tarui, Seiki Nishida
  • Patent number: 8013018
    Abstract: Provided is a compound that is an NMDA receptor antagonist having a broader safety margin, and is useful as an agent for treating or preventing Alzheimer's disease, cerebrovascular dementia, Parkinson's disease, ischemic apoplexy, or pain. A novel compound or a salt thereof, which is characterized in that it has an amino group and R1 (lower alkyl, cycloalkyl, -lower alkylene-aryl, aryl which may be substituted, and the like) on carbon atoms of indane, cyclopenta[b]thiophene, cyclopenta[b]furan, cyclopenta[b]pyridine, or cyclopenta[c]pyridine ring, or 2,3 -dihydro-1-benzofuran, 2,3-dihydro-1-benzothiophene, indoline ring, or the like, and has R2 and R3 (the same or different, each lower alkyl or aryl) on carbon atoms beside them, and an NMDA receptor antagonist comprising the same as an active component.
    Type: Grant
    Filed: July 17, 2007
    Date of Patent: September 6, 2011
    Assignee: Astellas Pharma Inc.
    Inventors: Satoshi Hayashibe, Shingo Yamasaki, Kazushi Watanabe, Nobuyuki Shiraishi, Daisuke Suzuki, Hiroaki Hoshii, Junya Ohmori, Takatoshi Kanayama
  • Publication number: 20100267695
    Abstract: [Problems] To provide a compound which is useful as an NMDA receptor antagonist. [Means for Solution] The present inventors have studied a compound having an NMDA receptor antagonistic action, and confirmed that the fused indane compound of the present invention has an excellent NMDA receptor antagonistic action, thereby completed the present invention. The fused indane compound of the present invention has an excellent NMDA receptor antagonistic action and can be used as a prophylactic and/or therapeutic agent for Alzheimer's disease, cerebrovascular dementia, Parkinson's disease, intractable depression, attention deficit hyperactivity disorder, migraines, or the like.
    Type: Application
    Filed: November 26, 2008
    Publication date: October 21, 2010
    Applicant: ASTELLAS PHARMA INC.
    Inventors: Satoshi Hayashibe, Shingo Yamasaki, Nobuyuki Shiraishi, Hiroaki Hoshii, Takahiko Tobe
  • Publication number: 20100239884
    Abstract: A plated steel wire for a parallel wire strand (PWS) with excellent twist properties can include, in terms of mass %, about 0.8 to 1.1% of C, about 0.8 to 1.3% of Si, about 0.3 to 0.8% of Mn, about 0.001 to 0.006% of N, and about 0.0004 to 0.0060% of B, where a quantity of solid-solubilized B is at least 0.0002%. Such exemplary wire can include either one or both of about 0.005 to 0.1% of Al and/or about 0.005 to 0.1% of Ti, and may contain, as the remainder, Fe and unavoidable impurities. For example, an area fraction of non-pearlite structures in a region from a surface layer down to a depth of about 50 ?m is likely not more than about 10%, an area fraction of non-pearlite structures within an entire cross-section is likely not more than about 5%, and a surface of the steel wire can be galvanized with a plating quantity within a range from about 300 to 500 g/m2.
    Type: Application
    Filed: December 10, 2007
    Publication date: September 23, 2010
    Applicant: Nippon Steel Corporation
    Inventors: Toshiyuki Manabe, Shingo Yamasaki, Seiki Nishida
  • Publication number: 20100212786
    Abstract: The invention provides wire rod excellent in drawability and steel wire made from the wire rod as starting material with high productivity at good yield and low cost. A hard steel wire rod of a specified composition is heated in a specified temperature range to conduct post-reaustenization patenting and thereby obtain a high-carbon steel wire excellent in ductility that has a pearlite structure of an area ratio of 97% or greater and the balance of non-pearlite structures including bainite, degenerate-pearlite and pro-eutectoid ferrite and whose fracture reduction of area RA satisfies Expressions (1), (2) and (3) below: RA?Ramin??(1), where RAmin=a?b×pearlite block size (?m), a=?0.0001187×TS (MPa)2+0.31814×TS (MPa)?151.32??(2) b=0.0007445×TS (MPa)?0.3753??(3).
    Type: Application
    Filed: April 18, 2007
    Publication date: August 26, 2010
    Inventors: Shingo Yamasaki, Seiki Nishida, Makio Kikuchi
  • Publication number: 20090277545
    Abstract: The invention provides wire rod excellent in drawability and steel wire made from the wire rod as starting material with high productivity at good yield and low cost. A hard steel wire rod of a specified composition is hot rolled, the hot-rolled steel is coiled in a specified temperature range, and the coiled steel is subjected to patenting at a predetermined cooling rate, thereby affording a high-carbon steel wire excellent in workability. It is high-strength steel wire excellent in drawability comprising a pearlite structure of an area ratio of 97% or greater and the balance of non-pearlite structures including bainite, degenerate-pearlite and pro-eutectoid ferrite and having a pearlite block size of not less than 20 ?m and not greater than 45 ?m. The invention also provides a high-carbon steel wire excellent in ductility, which is manufactured by subjecting the wire rod to intermediate patenting and cold drawing and has a tensile strength of 2800 MPa or greater.
    Type: Application
    Filed: April 18, 2007
    Publication date: November 12, 2009
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Shingo Yamasaki, Seiki Nishida, Makio Kikuchi
  • Publication number: 20090229711
    Abstract: A high strength wire rod in which an area fraction of pro-eutectoid ferrite is 3% or less and an area fraction of pearlite structure is 90% or more, being obtained by subjecting a hard steel wire rod having specified composition to a molten salt patenting treatment directly after hot-rolling or after performing re-austenitization subsequent to hot-rolling.
    Type: Application
    Filed: June 29, 2006
    Publication date: September 17, 2009
    Applicant: Nippon Steel Corporation
    Inventors: Shingo Yamasaki, Arata Iso, Seiki Nishida
  • Publication number: 20090186916
    Abstract: Provided is a compound that is an NMDA receptor antagonist having a broader safety margin, and is useful as an agent for treating or preventing Alzheimer's disease, cerebrovascular dementia, Parkinson's disease, ischemic apoplexy, or pain. A novel compound or a salt thereof, which is characterized in that it has an amino group and R1 (lower alkyl, cycloalkyl, -lower alkylene-aryl, aryl which may be substituted, and the like) on carbon atoms of indane, cyclopenta[b]thiophene, cyclopenta[b]furan, cyclopenta[b]pyridine, or cyclopenta[c]pyridine ring, or 2,3-dihydrdo-1-benzofuran, 2,3-dihydrdo-1-benzothiophene, indoline ring, or the like, and has R2 and R3 (the same or different, each lower alkyl or aryl) on carbon atoms beside them, and an NMDA receptor antagonist comprising the same as an active component.
    Type: Application
    Filed: July 17, 2007
    Publication date: July 23, 2009
    Applicant: ASTELLAS PHARMA INC.
    Inventors: Satoshi Hayashibe, Shingo Yamasaki, Kazushi Watanabe, Nobuyuki Shiraishi, Daisuke Suzuki, Hiroaki Hoshii, Junya Ohmori, Takatoshi Kanayama
  • Publication number: 20090151824
    Abstract: A wire rod which is mainly composed of pearlite and has an area fraction of 5% or less of a non-pearlite structure composed of pro-eutectoid ferrite, degenerate-pearlite or bainite in a section, or has an area fraction of 10% or less of a non-pearlite structure in a portion from the surface to a depth of 100 ?m.
    Type: Application
    Filed: June 29, 2006
    Publication date: June 18, 2009
    Inventors: Shingo Yamasaki, Arata Iso, Seiki Nishida
  • Publication number: 20090087336
    Abstract: A high-carbon steel wire rod of high ductility for steel cord and the like is provided that experiences little breakage during drawing. The high-carbon steel wire rod of high ductility is a high-carbon steel wire rod fabricated by hot rolling that that has a carbon content of 0.7 mass % or greater, wherein 95% or greater of the wire rod metallographic structure is pearlite structure and the maximum pearlite block size of pearlite at the core of the hot-rolled wire rod is 65 ?m or less. The high-carbon steel wire rod of high ductility has a tensile strength in a range of {248+980×(C mass %)}±40 MPa} and a reduction of area of {72.8?40×(C mass %) %} or greater. The high-carbon steel wire rod of high ductility is characterized in that the average pearlite block size at the core of the hot-rolled wire rod constituted by ferrite grain boundaries of an orientation difference of 9 degrees or greater as measured with an EBSP analyzer is 10 ?m or greater and 30 ?m or less.
    Type: Application
    Filed: May 31, 2007
    Publication date: April 2, 2009
    Inventors: Seiki Nishida, Shingo Yamasaki, Hitoshi Demachi, Nariyasu Muroga, Shouichi Ohashi, Kenichi Nakamura, Makoto Kosaka, Nobuyuki Komiya, Susumu Sahara
  • Patent number: 7462250
    Abstract: The present invention provides a high strength, high toughness steel wire rod useful for a PC steel wire, galvanized steel strands, spring use steel wire, cables for suspension bridges, etc. By hot rolling, then directly patenting or reaustenitizing, then patenting a high carbon steel wire rod of a specific chemical composition of the steel and chemical composition, size, and numerical density of inclusions, piano wire rod or high carbon steel wire rod having a structure of mainly pearlite, having an average value of the proeutectoid cementite area ratio of 5% or less in a center region of less than 20% of the wire rod diameter from the center of the wire rod, having a micromartensite size of the C section of 100 ?m or less, having a tensile strength of the 170 kgf/mm2 class or more, and having a drawing ratio at break of 30% or more is obtained.
    Type: Grant
    Filed: January 27, 2004
    Date of Patent: December 9, 2008
    Assignee: Nippon Steel Corporation
    Inventors: Shingo Yamasaki, Seiki Nishida, Toshiyuki Kajitani, Wataru Yamada, Yoshitaka Nishikawa, Nariyasu Muroga, Nobuyuki Komiya
  • Publication number: 20070197594
    Abstract: Provided are compounds which are an NMDA antagonist having a broad safety margin and are useful as a treating agent or a preventing agent for Alzheimer's disease, cerebrovascular dementia, Parkinson's disease, ischemic apoplexy, pain, etc. Concretely provided are an amine derivative or its salt characterized in that the amine-containing structure A therein bonds to a 2- or 3-cyclic condensed ring (e.g., indane, tetralone, 4,5,6,7-tetrahydrobenzothiophene, 4,5,6,7-tetrahydrobenzofuran, 7,8-dihydro-6H-indeno[4,5-b]furan, 2,3-dihydro-1H-cyclopenta[1]naphthalene) via X1 (bond or lower alkylene); and an NMDA antagonist containing it as an active ingredient thereof.
    Type: Application
    Filed: September 20, 2005
    Publication date: August 23, 2007
    Applicant: ASTELLAS PHARMA INC.
    Inventors: Satoshi Hayashibe, Takatoshi Kanayama, Junya Ohmori, Takahiko Tobe, Kyoichi Maeno, Yoshitsugu Shitaka, Jotarou Suzuki, Shigeki Kawabata, Nobuyuki Shiraishi, Shingo Yamasaki, Daisuke Suzuki, Hiroaki Hoshii
  • Publication number: 20060144474
    Abstract: The invention provides a steel material with satisfactory hydrogen embrittlement resistance, and particularly it relates to high-strength steel with satisfactory hydrogen embrittlement resistance and a strength of 1200 MPa or greater, as well as a process for production thereof. At least one simple or compound deposit of oxides, carbides or nitrides as hydrogen trap sites which trap hydrogen with a specific trap energy is added to steel, where the mean sizes, number densities, and length-to-thickness ratios (aspect ratio) are in specific ranges. By applying the specific steel components and production process it is possible to obtain high-strength steel with excellent hydrogen embrittlement resistance.
    Type: Application
    Filed: January 20, 2004
    Publication date: July 6, 2006
    Inventors: Shingo Yamasaki, Daisuke Hirakami, Toshimi Tarui, Seiki Nishida
  • Publication number: 20060137776
    Abstract: The present invention provides a high strength, high toughness steel wire rod useful for a PC steel wire, galvanized steel strands, spring use steel wire, cables for suspension bridges, etc. By hot rolling, then directly patenting or reaustenitizing, then patenting a high carbon steel wire rod of a specific chemical composition of the steel and chemical composition, size, and numerical density of inclusions, piano wire rod or high carbon steel wire rod having a structure of mainly pearlite, having an average value of the proeutectoid cementite area ratio of 5% or less in a center region of less than 20% of the wire rod diameter from the center of the wire rod, having a micromartensite size of the C section of 100 ?m or less, having a tensile strength of the 170 kgf/mm2 class or more, and having a drawing ratio at break of 30% or more is obtained.
    Type: Application
    Filed: January 27, 2004
    Publication date: June 29, 2006
    Inventors: Shingo Yamasaki, Seiki Nishida, Toshiyuki Kajitani, Wataru Yamada, Yoshitaka Nishikawa, Nariyasu Muroga, Nobuyuki Komiya