Patents by Inventor Yukio Takagi

Yukio Takagi 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: 10882033
    Abstract: A slurry composition for a catalyst and a method for producing the same, a catalyst and a method for producing the same using the slurry composition for a catalyst. The method omits many heretofore required treatment steps and reduces catalyst production cost. The method comprising the steps of providing a slurry composition for a catalyst, comprising at least an aluminosilicate, Cu, and water, and having a solid concentration of 0.1% by mass to 90% by mass, wherein a component for a catalyst has composition represented by Al2O3·xSiO2·yT2O·zCuO (wherein T is a quaternary ammonium cation, and x, y and z are numbers that satisfy 10?x?40, 0.1?y<2.0, and 0.1?z<2.0, respectively) in terms of molar ratio based on an oxide; coating at least one side of a support with this slurry composition; and heat-treating at 350° C. or higher.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: January 5, 2021
    Assignee: N.E. CHEMCAT CORPORATION
    Inventors: Yukio Takagi, Kiyohiko Saito, Yasuyuki Banno, Makoto Nagata
  • Publication number: 20200299239
    Abstract: An aromatic nitro compound has a structure in which a nitro group and a halogen atom, in a separated state, are directly bonded as substituents to the ring structure of the same ring; a reaction composition is provided which, in a hydrogenation reaction of the nitro group of said aromatic nitro compound, allows selectively hydrogenating the nitro group, and sufficiently reducing the separation of the halogen atom from the ring; also provided is a reaction system that uses this reaction composition. This reaction composition includes a catalyst which, with the aforementioned aromatic nitro compound as reactant, is used in a hydrogenation reaction of at least one of the one or more nitro groups of said reactant. Further, the reaction composition includes a base and an organic solvent. The catalyst includes a carrier, and Fe oxide particles and Pt particles supported by the carrier.
    Type: Application
    Filed: February 15, 2017
    Publication date: September 24, 2020
    Applicant: N.E. CHEMCAT CORPORATION
    Inventors: Hiroyasu Suzuka, Tomoteru Mizusaki, Yusuke Nakaya, Yoshiyuki Wada, Yukio Takagi
  • Publication number: 20200290024
    Abstract: Provided is a catalyst mixture which, in a nitro group hydrogenation reaction of an aromatic nitro compound having a structure in which nitro groups and halogen atoms are directly bonded as substituents to a ring skeleton of the same ring while separated from each other, is capable of selectively hydrogenating the nitro groups and sufficiently reducing the removal of the halogen atoms from the ring. This catalyst mixture includes a catalyst which is used in a hydrogenation reaction of at least one among one or more nitro groups present in a reactant, which is an aromatic nitro compound having a structure in which one or more nitro groups and one or more halogen atoms are directly bonded as substituents to a ring skeleton of the same ring while separated from each other. This catalyst mixture further includes a base.
    Type: Application
    Filed: February 15, 2017
    Publication date: September 17, 2020
    Applicant: N.E. CHEMCAT CORPORATION
    Inventors: Tomoteru Mizusaki, Hiroyasu Suzuka, Yusuke Nakaya, Yoshiyuki Wada, Yukio Takagi
  • Publication number: 20200188897
    Abstract: An organometallic complex catalyst is disclosed for use in a cross-coupling reaction. In formula (1), M is the coordination center and represents a metal atom such as Pd or an ion thereof. R1, R2, and R3 may be the same or different and are a substituent such as a hydrogen atom. R4, R5, R6, and R7 may be the same or different and are a substituent such as a hydrogen atom. X represents a halogen atom. R8 represents a substituent that has a ? bond and 3-20 carbon atoms. With regard to the electron-donating properties of R1-R7 with respect to the coordination center M of the ligand containing R1-R7 that is indicated in formula (2), R1-R7 are arranged in combination such that the TEP value obtained from infrared spectroscopy shifts toward the low frequency side compared to the TEP value of the ligand of formula (2-1).
    Type: Application
    Filed: December 6, 2017
    Publication date: June 18, 2020
    Applicants: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, N.E. CHEMCAT CORPORATION
    Inventors: Junchul Choi, Norihisa Fukaya, Shunya Onozawa, Kazuhiko Sato, Hiroyuki Yasuda, Tomoteru Mizusaki, Yukio Takagi
  • Publication number: 20200016576
    Abstract: A catalyst, which can be used even under mild conditions and also has durability so as to enable repeated use while maintaining high activity, and with which a reduction reaction for converting an amide compound into an amine compound can be carried out, is provided by means of an amide compound hydrogenation reaction catalyst characterized in that platinum and vanadium are supported on a carrier and a method for producing an amine compound using the same.
    Type: Application
    Filed: March 28, 2018
    Publication date: January 16, 2020
    Applicants: OSAKA UNIVERSITY, N. E. CHEMCAT COROPORATION
    Inventors: Kiyotomi KANEDA, Takato MITSUDOME, Yukio TAKAGI
  • Publication number: 20190308182
    Abstract: An organometallic complex catalyst is disclosed for use in a cross-coupling reaction. In formula (1), M is the coordination center and represents a metal atom such as Pd or an ion thereof. R1, R2, and R3 may be the same or different and are a substituent such as a hydrogen atom. R4, R5, R6, and R7 may be the same or different and are a substituent such as a hydrogen atom. X represents a halogen atom. R8 represents a substituent that has a ? bond and 3-20 carbon atoms. With regard to the electron-donating properties of R1-R7 with respect to the coordination center M of the ligand containing R1-R7 that is indicated in formula (2), R1-R7 are arranged in combination such that the TEP value obtained from infrared spectroscopy shifts toward the high frequency side compared to the TEP value of the ligand of formula (2-1).
    Type: Application
    Filed: December 6, 2017
    Publication date: October 10, 2019
    Applicants: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, N.E. CHEMCAT CORPORATION
    Inventors: Junchul Choi, Norihisa Fukaya, Shunya Onozawa, Kazuhiko Sato, Hiroyuki Yasuda, Tomoteru Mizusaki, Yukio Takagi
  • Publication number: 20190160455
    Abstract: A slurry composition for a catalyst and a method for producing the same, a catalyst and a method for producing the same using the slurry composition for a catalyst. The method omits many heretofore required treatment steps and reduces catalyst production cost. The method comprising the steps of providing a slurry composition for a catalyst, comprising at least an aluminosilicate, Cu, and water, and having a solid concentration of 0.1% by mass to 90% by mass, wherein a component for a catalyst has composition represented by Al2O3.xSiO2.yT2O.zCuO (wherein T is a quaternary ammonium cation, and x, y and z are numbers that satisfy 10?x?40, 0.1?y<2.0, and 0.1?z<2.0, respectively) in terms of molar ratio based on an oxide; coating at least one side of a support with this slurry composition; and heat-treating at 350° C. or higher.
    Type: Application
    Filed: November 21, 2018
    Publication date: May 30, 2019
    Applicant: N.E. CHEMCAT Corporation
    Inventors: Yukio TAKAGI, Kiyohiko SAITO, Yasuyuki BANNO, Makoto NAGATA
  • Patent number: 9707544
    Abstract: Conventionally, a silver-cerium oxide composite containing a silver particle and cerium oxide covering the surface of the silver particle has been synthesized through a multi-stage process, and is disadvantageous not only in that there is a need to use an organic solvent and a surfactant, causing the time and cost to be increased, but also in that there is a possibility that fulminating silver is formed, leading to a problem about the safety. A method for producing a catalyst having a silver-cerium oxide composite and an alkaline carrier having supported thereon the oxide composite, the silver-cerium oxide composite containing a silver particle and cerium oxide covering the surface of the silver particle, the method having preparing a mixture containing a silver compound, a cerium compound, and an alkaline carrier, and drying the mixture is provided.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: July 18, 2017
    Assignees: OSAKA UNIVERSITY, N.E. CHEMCAT CORPORATION
    Inventors: Kiyotomi Kaneda, Yukio Takagi
  • Publication number: 20160310931
    Abstract: Conventionally, a silver-cerium oxide composite containing a silver particle and cerium oxide covering the surface of the silver particle has been synthesized through a multi-stage process, and is disadvantageous not only in that there is a need to use an organic solvent and a surfactant, causing the time and cost to be increased, but also in that there is a possiblity that fulminating silver is formed, leading to a problem about the safety. A method for producing a catalyst having a silver-cerium oxide composite and an alkaline carrier having supported thereon the oxide composite, the silver-cerium oxide composite containing a silver particle and cerium oxide covering the surface of the silver particle, the method having preparing a mixture containing a silver compound, a cerium compound, and an alkaline carrier, and drying the mixture is provided.
    Type: Application
    Filed: April 22, 2016
    Publication date: October 27, 2016
    Applicants: OSAKA UNIVERSITY, N.E. CHEMCAT CORPORATION
    Inventors: KIYOTOMI KANEDA, YUKIO TAKAGI
  • Patent number: 8507630
    Abstract: The invention has an object to obtain an organic inorganic composite material having high activity and high selectivity, and suitable as a catalyst material having small elution of an active metal from a carrier, and further to obtain an organosilicon compound suitable for the preparation of the composite material. The composite material is an organic inorganic composite material comprising an organosilicon compound having at least two groups containing reactive silicon at a molecular end, bonded to one silicon atom constituting the organosilicon compound, and an inorganic oxide material, the organosilicon compound and the inorganic oxide material being bonded to each other through a plurality of groups containing reactive silicon of the organosilicon compound. The organosilicon compound is represented by the following general formula (1) or (2).
    Type: Grant
    Filed: March 5, 2009
    Date of Patent: August 13, 2013
    Assignees: National Institute of Advanced Industrial Science and Technology, N.E. Chemcat Corporation
    Inventors: Shun-ya Onozawa, Norihisa Fukaya, Kaori Saitou, Toshiyasu Sakakura, Hiroyuki Yasuda, Yukio Takagi, Masae Ueda
  • Publication number: 20110004010
    Abstract: The invention has an object to obtain an organic inorganic composite material having high activity and high selectivity, and suitable as a catalyst material having small elution of an active metal from a carrier, and further to obtain an organosilicon compound suitable for the preparation of the composite material. The composite material is an organic inorganic composite material comprising an organosilicon compound having at least two groups containing reactive silicon at a molecular end, bonded to one silicon atom constituting the organosilicon compound, and an inorganic oxide material, the organosilicon compound and the inorganic oxide material being bonded to each other through a plurality of groups containing reactive silicon of the organosilicon compound. The organosilicon compound is represented by the following general formula (1) or (2). Formula (1) wherein symbols are the same as defined in claim 17. Formula (2) wherein symbols are the same as defined in claim 18.
    Type: Application
    Filed: March 5, 2008
    Publication date: January 6, 2011
    Applicants: National Instit of Advanced Indust Sci and Tech, N.E. Chemcat Corporation
    Inventors: Shun-ya Onozawa, Norihisa Fukaya, Kaori Saitou, Toshiyasu Sakakura, Hiroyuki Yasuda, Yukio Takagi, Masae Ueda
  • Patent number: 7541742
    Abstract: The present invention provides colored glass containing no hazardous substances, such as CdS, CdSe and PbCrO4, and used for lamps and covers for lighting, a colored glass bulb with yellow to orange color produced by using said colored glass, and a method for producing said colored glass and said colored glass bulb. Glass composition having a formula of R?2O—RO—SiO2 (wherein R? is an alkali metal element and R is an alkaline earth metal element) is added with 0.01-0.6 of weight ratio of Mo (molybdenum) as MoO3 and 0.01-1.0 of weight ratio of S to obtain the colored glass and the colored glass bulb therefrom. The colored glass having a formula of R?2O—RO—SiO2 is formed to a desired shape to obtain the colored glass bulb, and the shaped hollow article is heated to 400-620° C. to apply a coloring treatment thereto.
    Type: Grant
    Filed: December 1, 2005
    Date of Patent: June 2, 2009
    Assignees: Maeda Kogyo Co., Ltd., Nippon Electric Glass Co., Ltd.
    Inventors: Hideki Oyama, Yukio Takagi
  • Patent number: 7049255
    Abstract: The present invention provides colored glass containing no hazardous substances, such as CdS, CdSe and PbCrO4, and used for lamps and covers for lighting, a colored glass bulb with yellow to orange color produced by using said colored glass, and a method for producing said colored glass and said colored glass bulb. Glass composition having a formula of R?2O—RO—SiO2 (wherein R? is an alkali metal element and R is an alkaline earth metal element) is added with 0.01–0.6 of weight ratio of Mo (molybdenum) as MoO3 and 0.01–1.0 of weight ratio of S to obtain the colored glass and the colored glass bulb therefrom. The colored glass having a formula of R?2O—RO—SiO2 is formed to a desired shape to obtain the colored glass bulb, and the shaped hollow article is heated to 400–620° C. to apply a coloring treatment thereto.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: May 23, 2006
    Assignees: Maeda Kogyo Co., LTD, Nippon Electric Glass Co., LTD
    Inventors: Hideki Oyama, Yukio Takagi
  • Publication number: 20060084562
    Abstract: The present invention provides colored glass containing no hazardous substances, such as CdS, CdSe and PbCrO4, and used for lamps and covers for lighting, a colored glass bulb with yellow to orange color produced by using said colored glass, and a method for producing said colored glass and said colored glass bulb. Glass composition having a formula of R?2O—RO—SiO2 (wherein R? is an alkali metal element and R is an alkaline earth metal element) is added with 0.01-0.6 of weight ratio of Mo (molybdenum) as MoO3 and 0.01-1.0 of weight ratio of S to obtain the colored glass and the colored glass bulb therefrom. The colored glass having a formula of R?2O—RO—SiO2 is formed to a desired shape to obtain the colored glass bulb, and the shaped hollow article is heated to 400-620° C. to apply a coloring treatment thereto.
    Type: Application
    Filed: December 1, 2005
    Publication date: April 20, 2006
    Applicants: MAEDA KOGYO CO., LTD., NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Hideki Oyama, Yukio Takagi
  • Patent number: 7026753
    Abstract: The present invention provides glass for a fluorescent lamp, comprising: CeO2 of 0.1% to 1.0%, Sb2O3 of 0.05% or lower, SiO2 of 60% to 75%, Al2O3 of 0.5% to 10%, B2O3 of 0% to 5%, CaO of 0% to 8%, MgO of 0% to 8%, SrO of 0% to 15%, BaO of 1% to 12%, R2O of 13% to 22% (R represents Li, Na or K), Fe2O3 of 0% to 0.2%, TiO2 of 0% to 1.0%, and PbO of 0.05% or lower, the percent each being by mass; a glass tube for a fluorescent lamp comprises the above glass; and a fluorescent lamp comprises the above glass tube as an envelope.
    Type: Grant
    Filed: October 26, 2001
    Date of Patent: April 11, 2006
    Assignee: Nippon Electric Glass Co., Ltd.
    Inventors: Tsutomu Futagami, Yukio Takagi
  • Publication number: 20020074930
    Abstract: The present invention provides glass for a fluorescent lamp, comprising: CeO2 of 0.1% to 1.0%, Sb2O3 of 0.05% or lower, SiO2 of 60% to 75%, Al2O3 of 0.5% to 10%, B2O3 of 0% to 5%, CaO of 0% to 8%, MgO of 0% to 8%, SrO of 0% to 15%, BaO of 1% to 12%, R2O of 13% to 22% (R represents Li, Na or K), Fe2O3 of 0% to 0.2%, TiO2 of 0% to 1.0%, and PbO of 0.05% or lower, the percent each being by mass; a glass tube for a fluorescent lamp comprises the above glass; and a fluorescent lamp comprises the above glass tube as an envelope.
    Type: Application
    Filed: October 26, 2001
    Publication date: June 20, 2002
    Inventors: Tsutomu Futagami, Yukio Takagi
  • Publication number: 20020042338
    Abstract: The present invention provides colored glass containing no hazardous substances, such as CdS, CdSe and PbCrO4, and used for lamps and covers for lighting, a colored glass bulb with yellow to orange color produced by using said colored glass, and a method for producing said colored glass and said colored glass bulb, Glass composition having a formula of R′2O—RO—SiO2 (wherein R′ is an alkali metal element and R is an alkaline earth metal element) is added with 0.01-0.6 of weight ratio of Mo (molybdenum) as MoO3 and 0.01-1.0 of weight ratio of S to obtain the colored glass and the colored glass bulb therefrom. The colored glass having a formula of R′2O—RO—SiO2 is formed to a desired shape to obtain the colored glass bulb, and the shaped hollow article is heated to 400-620° C. to apply a coloring treatment thereto.
    Type: Application
    Filed: September 27, 2001
    Publication date: April 11, 2002
    Inventors: Hideki Oyama, Yukio Takagi
  • Patent number: 5546123
    Abstract: An automatic steering device is presented for controlling the direction of travel of an asphalt finisher during a paving operation. The device is provided with a laser generator (18) which projects a laser beam of a slit shape on a series of objects along the roadside which is selected to served as a reference line (A). An image recording device (17), a CCD camera, is disposed on the vehicle member (2), which records the projected laser light illuminating the objects and outputs a generated image (Ba) to a master controller (22). The master controller (22) determines the current deviation of the vehicle member (2) from the reference line (A) by the changes in the position of the generated image (Ba), and operates the automatic control device so as to steer the vehicle member (2) in the correct direction to permit the asphalt finisher to follow the reference line (A).
    Type: Grant
    Filed: April 6, 1994
    Date of Patent: August 13, 1996
    Assignee: Niigata Engineering Co. Ltd.
    Inventors: Hachiro Ikeda, Noriaki Miyamoto, Ryoei Umeda, Hidenori Yasu, Mitsuo Fukukawa, Yukiei Masuyama, Shoji Kinoshita, Yukio Takagi, Tomohiro Gocho, Fumio Goto, Akio Ishii, Tetsuo Ogawa, Yoshun Hasegawa, Keitaro Hironaka, Yasuhiro Ogoshi
  • Patent number: 5484227
    Abstract: Efficient paving operation requires that the levelling operation of asphalt be carried out accurately along a reference line which follows a given direction along a roadside. A simple and effective automatic control device for controlling the steering direction in conjunction with adjustments of the screed for an asphalt finisher (shortened to finisher) is presented. The control device automatically regulates the extension or retraction of the screeds on both sides of the finisher in reference to a visual display of the reference line following some objects along the roadside. The visual detection system of control is simple and economical and provides an accurate control over the direction of paving.
    Type: Grant
    Filed: April 6, 1994
    Date of Patent: January 16, 1996
    Assignees: Niigata Engineering Co., Ltd., The Nippon Road Co., Ltd.
    Inventors: Hachiro Ikeda, Noriaki Miyamoto, Ryoei Umeda, Hidenori Yasu, Mitsuo Fukukawa, Yukiei Masuyama, Shoji Kinoshita, Yukio Takagi, Tomohiro Gocho, Fumio Goto, Akio Ishii, Tetsuo Ogawa, Yoshun Hasegawa, Keitaro Hironaka, Yasuhiro Ogoshi
  • Patent number: 5211176
    Abstract: An ultrasound examination system, including an ultrasound probe detachably connected at its proximal end to a probe operating unit and having an ultrasound transducer rotatably mounted on the tip end of a flexible insert member and a rotation transmitting means passed through the insert member to rotate the ultrasound transducer. The probe operating unit is provided with a linear operating means for displacing the ultrasound transducer linearly for a linear scan, and a radial operating unit for rotating the ultrasound transducer for a radial scan, in combination with a mode selector means for switching the operation of the ultrasound transducer between linear scan mode in which the transducer is displaced linearly during transmission and reception of ultrasound signals and a radial scan mode in which the transducer is rotated during transmission and reception of ultrasound signals.
    Type: Grant
    Filed: November 29, 1991
    Date of Patent: May 18, 1993
    Assignee: Fuji Photo Optical Co., Ltd.
    Inventors: Masaaki Ishiguro, Toshizumi Tanaka, Yukio Takagi