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).
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Publication number: 20200290024Abstract: 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: ApplicationFiled: February 15, 2017Publication date: September 17, 2020Applicant: N.E. CHEMCAT CORPORATIONInventors: Tomoteru Mizusaki, Hiroyasu Suzuka, Yusuke Nakaya, Yoshiyuki Wada, Yukio Takagi
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Publication number: 20200188897Abstract: 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: ApplicationFiled: December 6, 2017Publication date: June 18, 2020Applicants: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, N.E. CHEMCAT CORPORATIONInventors: Junchul Choi, Norihisa Fukaya, Shunya Onozawa, Kazuhiko Sato, Hiroyuki Yasuda, Tomoteru Mizusaki, Yukio Takagi
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Publication number: 20200016576Abstract: 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: ApplicationFiled: March 28, 2018Publication date: January 16, 2020Applicants: OSAKA UNIVERSITY, N. E. CHEMCAT COROPORATIONInventors: Kiyotomi KANEDA, Takato MITSUDOME, Yukio TAKAGI
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Publication number: 20190308182Abstract: 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: ApplicationFiled: December 6, 2017Publication date: October 10, 2019Applicants: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, N.E. CHEMCAT CORPORATIONInventors: Junchul Choi, Norihisa Fukaya, Shunya Onozawa, Kazuhiko Sato, Hiroyuki Yasuda, Tomoteru Mizusaki, Yukio Takagi
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Publication number: 20190160455Abstract: 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: ApplicationFiled: November 21, 2018Publication date: May 30, 2019Applicant: N.E. CHEMCAT CorporationInventors: Yukio TAKAGI, Kiyohiko SAITO, Yasuyuki BANNO, Makoto NAGATA
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Patent number: 9707544Abstract: 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: GrantFiled: April 22, 2016Date of Patent: July 18, 2017Assignees: OSAKA UNIVERSITY, N.E. CHEMCAT CORPORATIONInventors: Kiyotomi Kaneda, Yukio Takagi
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Publication number: 20160310931Abstract: 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: ApplicationFiled: April 22, 2016Publication date: October 27, 2016Applicants: OSAKA UNIVERSITY, N.E. CHEMCAT CORPORATIONInventors: KIYOTOMI KANEDA, YUKIO TAKAGI
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Patent number: 8507630Abstract: 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: GrantFiled: March 5, 2009Date of Patent: August 13, 2013Assignees: National Institute of Advanced Industrial Science and Technology, N.E. Chemcat CorporationInventors: Shun-ya Onozawa, Norihisa Fukaya, Kaori Saitou, Toshiyasu Sakakura, Hiroyuki Yasuda, Yukio Takagi, Masae Ueda
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Publication number: 20110004010Abstract: 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: ApplicationFiled: March 5, 2008Publication date: January 6, 2011Applicants: National Instit of Advanced Indust Sci and Tech, N.E. Chemcat CorporationInventors: Shun-ya Onozawa, Norihisa Fukaya, Kaori Saitou, Toshiyasu Sakakura, Hiroyuki Yasuda, Yukio Takagi, Masae Ueda
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Patent number: 7541742Abstract: 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: GrantFiled: December 1, 2005Date of Patent: June 2, 2009Assignees: Maeda Kogyo Co., Ltd., Nippon Electric Glass Co., Ltd.Inventors: Hideki Oyama, Yukio Takagi
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Patent number: 7049255Abstract: 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: GrantFiled: September 27, 2001Date of Patent: May 23, 2006Assignees: Maeda Kogyo Co., LTD, Nippon Electric Glass Co., LTDInventors: Hideki Oyama, Yukio Takagi
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Publication number: 20060084562Abstract: 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: ApplicationFiled: December 1, 2005Publication date: April 20, 2006Applicants: MAEDA KOGYO CO., LTD., NIPPON ELECTRIC GLASS CO., LTD.Inventors: Hideki Oyama, Yukio Takagi
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Patent number: 7026753Abstract: 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: GrantFiled: October 26, 2001Date of Patent: April 11, 2006Assignee: Nippon Electric Glass Co., Ltd.Inventors: Tsutomu Futagami, Yukio Takagi
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Publication number: 20020074930Abstract: 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: ApplicationFiled: October 26, 2001Publication date: June 20, 2002Inventors: Tsutomu Futagami, Yukio Takagi
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Publication number: 20020042338Abstract: 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: ApplicationFiled: September 27, 2001Publication date: April 11, 2002Inventors: Hideki Oyama, Yukio Takagi
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Patent number: 5546123Abstract: 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: GrantFiled: April 6, 1994Date of Patent: August 13, 1996Assignee: 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
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Patent number: 5484227Abstract: 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: GrantFiled: April 6, 1994Date of Patent: January 16, 1996Assignees: 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
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Patent number: 5211176Abstract: 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: GrantFiled: November 29, 1991Date of Patent: May 18, 1993Assignee: Fuji Photo Optical Co., Ltd.Inventors: Masaaki Ishiguro, Toshizumi Tanaka, Yukio Takagi
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Patent number: 5150715Abstract: Described herein is an ultrasound imaging system which essentially comprises: an ultrasound probe having an elongated flexible body rotatably supporting an ultrasound transducer on a tip end portion thereof; an operating unit including means for scanning the ultrasound probe; a flexible cord having one end thereof securely fixed to the operating unit and the other end detachably connected to an ultrasound image observation terminal; and a rotary connector composed of relatively rotatable members and inserted in the wiring leading from the ultrasound transducer to a connector means connecting the flexible cord to the ultrasound image observation terminal.Type: GrantFiled: April 10, 1991Date of Patent: September 29, 1992Assignee: Fuji Photo Optical Co., Ltd.Inventors: Masaaki Ishiguro, Toshizumi Tanaka, Yukio Takagi
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Patent number: 5131396Abstract: Described herein is an ultrasonic internal examination system of the type having a rigid tip portion at the distal end of an ultrasonic probe to be inserted into an intracavitary portion of interest, and an ultrasonic vibratory element accommodated in a cavity formed in the rigid tip portion and filled with an ultrasonic transmissive medium for transmission and reception of signals. The rigid tip portion is formed with a cylindrical shaped outer configuration and internally defines a cavity having a radially concave curved inner wall surface of a predetermined radius of curvature on the inner periphery thereof.Type: GrantFiled: June 21, 1991Date of Patent: July 21, 1992Assignee: Fuji Photo Optical Co., Ltd.Inventors: Masaaki Ishiguro, Toshizumi Tanaka, Yukio Takagi