Patents Assigned to University of Yamanashi
  • Oriented piezoelectric ceramic, piezoelectric element, liquid discharge head, ultrasonic motor, and dust removing device
    Patent number: 9147830
    Abstract: Provided is an oriented piezoelectric ceramic of satisfactory piezoelectricity, which includes a metal oxide represented by (1?x)NaNbO3-xBaTiO3. Also provided are a piezoelectric element using the oriented piezoelectric ceramic which includes the metal oxide represented by (1?x)NaNbO3-xBaTiO3, and a liquid discharge head, an ultrasonic motor, and a dust removing device which use the piezoelectric element. An oriented piezoelectric ceramic includes as a main component a metal oxide represented by the following general formula (1), in which the oriented piezoelectric ceramic has a lead content and a potassium content that are each 1,000 ppm or less: (1?x)NaNbO3-xBaTiO3 . . . General formula (1), where a relationship of 0<x<0.3 is satisfied.
    Type: Grant
    Filed: May 28, 2012
    Date of Patent: September 29, 2015
    Assignees: Canon Kabushiki Kaisha, University of Yamanashi
    Inventors: Takayuki Watanabe, Shunsuke Murakami, Nobuhiro Kumada
  • CO-SELECTIVE METHANATION CATALYST
    Publication number: 20150246347
    Abstract: The first object is to increase the life of a selective CO methanation catalyst, and the second object is to enhance the CO removal rate of a selective CO methanation catalyst to reduce the outlet CO concentration in a wide temperature range. Provided a selective CO methanation catalyst including a supported metal catalyst which selectively methanizes CO in a hydrogen-rich gas containing CO and CO2 and a coating layer which covers a surface of the supported metal catalyst, has many pores, and is configured to reduce a CO concentration on the surface of the supported metal catalyst.
    Type: Application
    Filed: August 26, 2013
    Publication date: September 3, 2015
    Applicant: University of Yamanashi
    Inventors: Toshihiro Miyao, Kazutoshi Higashiyama, Weihua Shen, Hisao Yamashita, Noboru Hashimoto, Shigehito Deki, Masahiro Watanabe
  • Ionization method and apparatus using electrospray, and analyzing method and apparatus
    Patent number: 9111739
    Abstract: It is arranged so that living tissue that has not been pretreated can be adopted as a sample of interest. A sample is introduced into at least a tip portion of a hollow insulated sample holder 11 having a small hole 11a in the tip portion. A slender metal wire 12, which has been inserted into the sample holder 11 from the rear, is projected outwardly from the sample holder 11 through the hole 11a while being brought into contact with the sample. A high voltage is applied to the slender metal wire 12 at least in a portion of a time period in which the tip of the slender metal wire 12 is being projected outwardly from the hole 11a, thereby ionizing, by electrospray, the sample adhering to the tip of the slender metal wire 12. The ions are introduced into an analyzing apparatus and are analyzed.
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: August 18, 2015
    Assignee: UNIVERSITY OF YAMANASHI
    Inventor: Kenzo Hiraoka
  • Metallic separator for fuel cells and method of manufacturing the metallic separator
    Patent number: 9099690
    Abstract: A metallic separator for fuel cells having a metal plate, an electroconductive coating layer covering at least a surface in front and back surfaces of the metal plate which contacts a raw material and/or a reaction product, and an electroconductive channel-forming member disposed on a surface of the coating layer and forming a channel for the raw material and/or the reaction product and/or a channel for a cooling medium for cooling. A surface layer on the metal plate has a tensile residual stress within such a range that no stress-corrosion cracking occurs.
    Type: Grant
    Filed: June 16, 2006
    Date of Patent: August 4, 2015
    Assignee: University of Yamanashi
    Inventors: Masahiro Watanabe, Hiroyuki Uchida, Hisao Yamashita, Kenji Miyatake
  • Piezoelectric ceramics, manufacturing method for piezoelectric ceramics, piezoelectric element, liquid discharge head, liquid discharge apparatus, ultrasonic motor, optical apparatus, vibration generator, dust removing device, imaging apparatus, and electronic apparatus
    Patent number: 9082976
    Abstract: Provided is a piezoelectric ceramics that can achieve both high piezoelectric performance and a high Curie temperature. Also provided are a piezoelectric element, a liquid discharge head, an ultrasonic motor, and a dust removing device, which use the piezoelectric ceramics. The piezoelectric ceramics include a perovskite-type metal oxide expressed by a general formula (1): xBaTiO3-yBiFeO3-zBi(M0.5Ti0.5)O3, where M represents at least one type of element selected from the group consisting of Mg and Ni, x satisfies 0.40?x?0.80, y satisfies 0?y?0.30, z satisfies 0.05?z?0.60, and x+y+z=1 is satisfied, and are oriented in a (111) plane in a pseudocubic expression.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: July 14, 2015
    Assignees: Canon Kabushiki Kaisha, University of Yamanashi
    Inventors: Makoto Kubota, Takayuki Watanabe, Hisato Yabuta, Jumpei Hayashi, Nobuhiro Kumada, Satoshi Wada
  • Battery separator comprising a polyolefin nanofilament porous sheet
    Patent number: 9074308
    Abstract: Disclosed is a highly safe battery separator, in particular a separator for a lithium ion secondary battery, which reduces internal resistance, achieves good ionic conductivity, prevents passing of electrode active materials, and also prevents electrical short circuit by controlling deposition of lithium metal (dendrite). Also disclosed is a means for stably producing the battery separator with high productivity. Specifically disclosed are: a battery separator which is composed of a porous polyolefin sheet that is formed from a group of polyolefin nanofilaments that have an average filament diameter of less than 1 ?m and a filament size distribution of 0.2 or less; and a means for producing the battery separator.
    Type: Grant
    Filed: April 22, 2011
    Date of Patent: July 7, 2015
    Assignees: University of Yamanashi, JX Nippon Oil & Energy Corporation
    Inventors: Akihiro Suzuki, Takehiro Toyooka, Akira Matsuo, Takeshi Nishizawa, Atsuo Omaru
  • Selective CO methanation catalyst, method of producing the same, and apparatus using the same
    Patent number: 9005552
    Abstract: Provided is a new catalyst capable of removing carbon monoxide economically without adding particular reaction gas externally. Also provided are a process for producing and an apparatus using such a catalyst. Impregnation of a Ni—Al composite oxide precursor of a nonstoichiometric composition prepared by the solution-spray plasma technique with a ruthenium salt to be supported and performing reduction treatment allows CO methanation reaction to selectively proceed even in the high-temperature range in which CO2 methanation reaction and reverse water-gas-shift reaction proceed preferentially with conventional catalysts. Selective CO methanation reaction occurs reproducibly with another Ni—Al composite oxide precursor or an additive metallic species.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: April 14, 2015
    Assignee: University of Yamanashi
    Inventors: Masahiro Watanabe, Hisao Yamashita, Kazutoshi Higashiyama, Toshihiro Miyao, Aihua Chen
  • HIGH-MOLECULAR-WEIGHT ELECTROLYTE AND USE THEREOF
    Publication number: 20150064601
    Abstract: The present invention aims to provide a hydrocarbon-based polymer electrolyte which is excellent in processability and proton conductivity, especially proton conductivity at low water content, and a membrane thereof. The polymer electrolyte contains, in its main chain, a repeating unit represented by the following formula (1): wherein Ar represents a benzene or naphthalene ring, or a derivative thereof in which one or more of the ring-forming carbon atoms is replaced by a hetero atom; X represents a proton or a cation; a and b are each an integer of 0 to 4, and the sum of a's and b's is 1 or greater; m represents an integer of 1 or greater; and n represents an integer of 0 or greater.
    Type: Application
    Filed: November 21, 2012
    Publication date: March 5, 2015
    Applicants: KANEKA CORPORATION, UNIVERSITY OF YAMANASHI
    Inventors: Takahiro Miyahara, Masahiro Watanabe, Kenji Miyatake
  • Piezoelectric material, piezoelectric element, liquid discharge head, ultrasonic motor, and dust removing device
    Patent number: 8955947
    Abstract: Provided is a piezoelectric material which has satisfactory insulation property and piezoelectric property and which does not contain lead and potassium. The piezoelectric material includes a perovskite-type metal oxide that is represented by the following general formula (1): (NaxBa1-y)(NbyTi1-y)O3??General formula (1) where relationships of 0.80?x?0.95 and 0.85?y?0.95 are satisfied, and y×0.05 mol % or more to y×2 mol % or less of copper with respect to 1 mol of the perovskite-type metal oxide.
    Type: Grant
    Filed: February 27, 2012
    Date of Patent: February 17, 2015
    Assignees: Canon Kabushiki Kaisha, University of Yamanashi
    Inventors: Takayuki Watanabe, Shunsuke Murakami, Nobuhiro Kumada
  • Method for detecting hydrogen peroxide
    Patent number: 8871522
    Abstract: The presence of hydrogen peroxide vapor is detected with high sensitivity. Oxygen molecules in the air are ionized by electrons generated by a discharge plasma, thereby producing an oxygen molecule negative ion O2?. The oxygen molecule negative ion O2? produced is supplied to a space in which a hydrogen peroxide molecule H2O2 is to be detected. If a hydrogen peroxide molecule H2O2 is present, a cluster ion O2?(H2O2) of the oxygen molecule negative ion O2? and hydrogen peroxide molecule H2O2 is produced. The hydrogen peroxide molecule H2O2, therefore, can be detected by mass spectrometry. Other gas-phase negative ions such as chloride ion Cl? can be used besides the oxygen molecule negative ion O2?.
    Type: Grant
    Filed: August 15, 2011
    Date of Patent: October 28, 2014
    Assignee: University of Yamanashi
    Inventor: Kenzo Hiraoka
  • Ionization apparatus and ionization analysis apparatus
    Patent number: 8853626
    Abstract: A sampling nozzle 21, an ion supply tube 31 leading to an analysis apparatus 50 and a barrier discharge tube 11 are connected to first, second and third ends, respectively, of a T-shaped tube 41 having three connecting ports, and the central portion of the T-shaped tube is an ionization chamber SP. The ionization chamber SP is a closed space, and ions generated therein are introduced to the analysis apparatus 50 through the ion supply tube 31. As a result, almost all of the ions are introduced into the interior of the analysis apparatus.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: October 7, 2014
    Assignee: University of Yamanashi
    Inventors: Kenzo Hiraoka, Lee Chuin Chen
  • MEANS FOR MANUFACTURING MICRO-BEADS COMPRISING THERMOPLASTIC POLYMER MICRO-PARTICLES
    Publication number: 20140234625
    Abstract: The present invention relates to means for manufacturing micro-beads (polymer micro-particles) comprising thermoplastic polymer and having the average particle size of 10 ?m or less, and extending into the nano-range. An original filament comprising a thermoplastic polymer is passed through an orifice under an air pressure (P1) and guided to a spray chamber under a pressure (P2; where P1>P2). The original filament having passed through the orifice is heated and melted under irradiation by an infrared beam, and is sprayed in microparticulate form from the orifice by the flow of air generated by the pressure differential between P1 to P2, whereby micro-beads comprising thermoplastic polymer micro-particles having an average particle size of 10 ?m or less, and even less than 1 ?m are manufactured.
    Type: Application
    Filed: July 24, 2012
    Publication date: August 21, 2014
    Applicant: UNIVERSITY OF YAMANASHI
    Inventor: Akihiro Suzuki
  • COMPONENT FOR USE IN A BEARING DEVICE AND A METHOD FOR FORMING A LUBRICANT LAYER
    Publication number: 20140212080
    Abstract: A component for use in a bearing device according to one embodiment of the present invention includes a lubricant layer on a surface of the component. Here, the lubricant layer contains a rod-like ionic liquid crystal compound having a cation group and an anion group.
    Type: Application
    Filed: January 17, 2014
    Publication date: July 31, 2014
    Applicants: Samsung Electro-Mechanics Japan Advanced Technolog Co., Ltd., BALBIS Co., LTD, University of Yamanashi
    Inventors: Mitsuo KODAMA, Yuichiro HARAMOTO, Hiroyuki ANZAI
  • APPARATUS OF FORMING ELECTROCONDUCTIVE SUBSTANCE AND METHOD OF FORMING THE SAME
    Publication number: 20140193573
    Abstract: An apparatus forms an electroconductive substance in micro holes, the apparatus introduces a fluid, that includes at least a metal complex dissolved in a supercritical fluid or a subcritical fluid, into a reaction chamber including a first space and a second space, allows a planar substrate to be disposed in the fluid that continuously moves in a specific direction in the reaction chamber. A second surface of the substrate is vertical to the specific direction in which the fluid that is introduced into the first space moves; the substrate is supported throughout the entire first surface so that the fluid travels in the micro holes of the substrate from the second surface toward the first space of the substrate; and a support member including a fine communication hole through which the fluid passes toward the second space is disposed.
    Type: Application
    Filed: March 12, 2014
    Publication date: July 10, 2014
    Applicants: FUJIKURA LTD., UNIVERSITY OF YAMANASHI
    Inventors: Eiichi KONDOH, Masahiro MATSUBARA, Yuto TAKEUCHI, Mitsuhiro WATANABE, Satoshi YAMAMOTO, Naohiro KIKUKAWA
  • ORIENTED PIEZOELECTRIC CERAMIC, PIEZOELECTRIC ELEMENT, LIQUID DISCHARGE HEAD, ULTRASONIC MOTOR, AND DUST REMOVING DEVICE
    Publication number: 20140152144
    Abstract: Provided is an oriented piezoelectric ceramic of satisfactory piezoelectricity, which includes a metal oxide represented by (1?x)NaNbO3-xBaTiO3. Also provided are a piezoelectric element using the oriented piezoelectric ceramic which includes the metal oxide represented by (1?x)NaNbO3-xBaTiO3, and a liquid discharge head, an ultrasonic motor, and a dust removing device which use the piezoelectric element. An oriented piezoelectric ceramic includes as a main component a metal oxide represented by the following general formula (1), in which the oriented piezoelectric ceramic has a lead content and a potassium content that are each 1,000 ppm or less: (1?x)NaNbO3-xBaTiO3 . . . General formula (1), where a relationship of 0<x<0.3 is satisfied.
    Type: Application
    Filed: May 28, 2012
    Publication date: June 5, 2014
    Applicants: UNIVERSITY OF YAMANASHI, CANON KABUSHIKI KAISHA
    Inventors: Takayuki Watanabe, Shunsuke Murakami, Nobuhiro Kumada
  • Ionization Apparatus and Ionization Analysis Apparatus
    Publication number: 20140151550
    Abstract: A sampling nozzle 21, an ion supply tube 31 leading to an analysis apparatus 50 and a barrier discharge tube 11 are connected to first, second and third ends, respectively, of a T-shaped tube 41 having three connecting ports, and the central portion of the T-shaped tube is an ionization chamber SP. The ionization chamber SP is a closed space, and ions generated therein are introduced to the analysis apparatus 50 through the ion supply tube 31. As a result, almost all of the ions are introduced into the interior of the analysis apparatus.
    Type: Application
    Filed: February 4, 2014
    Publication date: June 5, 2014
    Applicant: University of Yamanashi
    Inventors: Kenzo Hiraoka, Lee Chuin Chen
  • PIEZOELECTRIC MATERIAL AND PRODUCTION METHOD THEREFOR
    Publication number: 20140125204
    Abstract: Provided is an oriented piezoelectric material with satisfactory sintering property free of Pb that is a hazardous substance, and a water-soluble alkaline ion, and a production method therefor. To this end, provided is a compound, including a tungsten bronze structure metal oxide, in which: the tungsten bronze structure metal oxide contains at least metal elements of Ba, Bi, Ca, and Nb, the metal elements satisfying the following conditions in terms of molar ratio; and has a C-axis orientation. The compound shows Ba/Nb=a: 0.363<a<0.399, Bi/Nb=b: 0.0110<b<0.0650, and Ca/Nb=c: 0.005<c<0.105. The tungsten bronze structure metal oxide preferably includes (1-x)·Ca1.4Ba3.6Nb10O30-x·Ba4Bi0.67Nb10O30 (0.30?x?0.95).
    Type: Application
    Filed: January 8, 2014
    Publication date: May 8, 2014
    Applicants: UNIVERSITY OF YAMANASHI, CANON KABUSHIKI KAISHA
    Inventors: Takanori Matsuda, Takayuki Watanabe, Hiroshi Saito, Nobuhiro Kumada
  • Method of manufacturing ceramics and piezoelectric material
    Patent number: 8702885
    Abstract: A method of manufacturing ceramics includes: placing, on a base material, a first slurry in which a metal oxide powder is dispersed; applying a magnetic field to the first slurry to solidify the first slurry, thereby forming an under coat layer made of a first compact; placing, on the under coat layer, a second slurry containing a metal oxide powder constituting the ceramics; applying a magnetic field to the second slurry to solidify the second slurry, thereby forming a second compact to obtain a laminated body of the second compact and the under coat layer; and obtaining the ceramics made of the second compact by removing the under coat layer from the laminated body of the second compact and the under coat layer and then sintering the second compact, or sintering the laminated body of the second compact and the under coat layer and then removing the under coat layer.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: April 22, 2014
    Assignees: Canon Kabushiki Kaisha, University of Yamanashi
    Inventors: Takanori Matsuda, Tatsuo Furuta, Takayuki Watanabe, Jumpei Hayashi, Nobuhiro Kumada
  • SODIUM NIOBATE POWDER, METHOD OF MANUFACTURING A SODIUM NIOBATE POWDER, PLATE-LIKE PARTICLE, METHOD OF MANUFACTURING A PLATE-LIKE PARTICLE, AND METHOD OF MANUFACTURING AN ORIENTED CERAMICS
    Publication number: 20140106170
    Abstract: Provided are methods of manufacturing an oriented ceramics containing sodium niobate and a raw material thereof. Specifically, provided is a sodium niobate powder, including cuboidal sodium niobate particles having an average side length of 0.1 ?m or more to 100 ?m or less, at least one face of the cuboid including a (100) plane in pseudo-cubic notation, in which the sodium niobate powder has a perovskite single-phase structure.
    Type: Application
    Filed: May 17, 2012
    Publication date: April 17, 2014
    Applicants: UNIVERSITY OF YAMANASHI, CANON KABUSHIKI KAISHA
    Inventors: Takayuki Watanabe, Hiroshi Saito, Jumpei Hayashi, Nobuhiro Kumada
  • Preferentially-oriented oxide ceramics, piezoelectric element, liquid discharge head, ultrasonic motor, and dust removing device
    Patent number: 8698380
    Abstract: Provided is a manufacturing method for preferentially-oriented oxide ceramics having a high degree of crystal orientation. The manufacturing method includes: obtaining slurry containing an oxide crystal B having magnetic anisotropy; applying a magnetic field to the oxide crystal B, and obtaining a compact of the oxide crystal B; and subjecting the compact to oxidation treatment to obtain preferentially-oriented oxide ceramics including a compact of an oxide crystal C having a crystal system that is different from a crystal system of one of a part and a whole of the oxide crystal B. By (1) reacting raw materials, (2) reducing the oxide crystal A, or (3) keeping the oxide crystal A at high temperature and quenching the oxide crystal A, the oxide crystal B is obtained to be used in the slurry.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: April 15, 2014
    Assignees: Canon Kabushiki Kaisha, University of Yamanashi
    Inventors: Takayuki Watanabe, Makoto Kubota, Jumpei Hayashi, Nobuhiro Kumada, Tomoaki Mochiduki