Patents by Inventor Takayoshi Sasaki

Takayoshi Sasaki 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: 20200271740
    Abstract: Provided is an orientation agent for NMR spectroscopy containing a nanosheet which is easy to prepare, excellent in handleability, economic efficiency and versatility, and is capable of being stably aligned to the magnetic field. The nanosheet is coated with a compound having a molecular weight of 1,500 or more and containing 35 or more functional groups per molecule, said functional groups being composed of at least one selected from a hydroxy group, an amino group, an amide group, a carbonyl group, a carboxyl group, a sulfo group, a phosphate group, an imidazole group and a guanidine group.
    Type: Application
    Filed: May 22, 2018
    Publication date: August 27, 2020
    Applicants: RIKEN, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Noriyuki UCHIDA, Yasuhiro ISHIDA, Kento UENO, Zhifang SUN, Qiaochu LI, Yoshiki YAMAGUCHI, Takayoshi SASAKI, Yasuo EBINA, Takuzo AIDA
  • Publication number: 20200234888
    Abstract: A method of manufacturing a ceramic electronic component includes forming a dielectric layer including a plurality of ceramic nanosheets on a first electrode, treating the dielectric layer with an acid, and forming a second electrode on the dielectric layer, a ceramic electronic component, and an electronic device.
    Type: Application
    Filed: April 1, 2020
    Publication date: July 23, 2020
    Inventors: Yoon Chul SON, Minoru OSADA, Takayoshi SASAKI, Chan KWAK, Doh Won JUNG, Youngjin CHO
  • Patent number: 10665954
    Abstract: The present invention realizes a thin dual-polarized leaky-wave antenna which uses a CRLH (Composite Right/Left Handed) transmission line and capable of obtaining a high tilt angle in a directivity in the vertical plane while suppressing cross polarization and side lobe at a target operation frequency. Specifically, the present invention provides a leaky-wave antenna including a dielectric substrate, a ground surface formed on a bottom surface of the dielectric substrate, a ground unit formed on a top surface of the dielectric substrate, and a CRLH (Composite Right/Left Handed) transmission line which is arranged adjacent to the ground unit and formed on a top surface of the dielectric substrate and uses a coplanar transmission line with a ground, in which a series capacitor (CL) and a parallel inductor (LL) constituting the CRLH transmission line are formed on a top surface of the dielectric substrate.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: May 26, 2020
    Assignee: Denki Kogyo Company, Limited
    Inventors: Takayoshi Sasaki, Keisuke Sato, Ichiro Oshima, Naobumi Michishita, Keizo Cho
  • Patent number: 10650977
    Abstract: A method of manufacturing a ceramic electronic component includes forming a dielectric layer including a plurality of ceramic nanosheets on a first electrode, treating the dielectric layer with an acid, and forming a second electrode on the dielectric layer, a ceramic electronic component, and an electronic device.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: May 12, 2020
    Assignees: SAMSUNG ELECTRONICS CO., LTD., NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Yoon Chul Son, Minoru Osada, Takayoshi Sasaki, Chan Kwak, Doh Won Jung, Youngjin Cho
  • Publication number: 20190273324
    Abstract: The present invention realizes a thin dual-polarized leaky-wave antenna which uses a CRLH (Composite Right/Left Handed) transmission line and capable of obtaining a high tilt angle in a directivity in the vertical plane while suppressing cross polarization and side lobe at a target operation frequency. Specifically, the present invention provides a leaky-wave antenna including a dielectric substrate, a ground surface formed on a bottom surface of the dielectric substrate, a ground unit formed on a top surface of the dielectric substrate, and a CRLH (Composite Right/Left Handed) transmission line which is arranged adjacent to the ground unit and formed on a top surface of the dielectric substrate and uses a coplanar transmission line with a ground, in which a series capacitor (CL) and a parallel inductor (LL) constituting the CRLH transmission line are formed on a top surface of the dielectric substrate.
    Type: Application
    Filed: May 14, 2018
    Publication date: September 5, 2019
    Applicant: Denki Kogyo Company, Limited
    Inventors: Takayoshi Sasaki, Keisuke Sato, Ichiro Oshima, Naobumi Michishita, Keizo Cho
  • Publication number: 20190131077
    Abstract: A method of manufacturing a ceramic electronic component includes forming a dielectric layer including a plurality of ceramic nanosheets on a first electrode, treating the dielectric layer with an acid, and forming a second electrode on the dielectric layer, a ceramic electronic component, and an electronic device.
    Type: Application
    Filed: October 19, 2018
    Publication date: May 2, 2019
    Inventors: Yoon Chul SON, Minoru OSADA, Takayoshi SASAKI, Chan KWAK, Doh Won JUNG, Youngjin CHO
  • Publication number: 20190131075
    Abstract: A ceramic electronic component includes a pair of electrodes facing each other and a dielectric layer disposed between the pair of electrodes and including a plurality of ceramic nanosheets, where the plurality of ceramic nanosheets has a multimodal lateral size distribution expressed by at least two separated peaks, a method of manufacturing the same, and an electronic device including the ceramic electronic component.
    Type: Application
    Filed: October 24, 2018
    Publication date: May 2, 2019
    Inventors: Hyeon Cheol PARK, Takayoshi SASAKI, Minoru OSADA, Chan KWAK, Daejin YANG, Doh Won JUNG, Youngjin CHO
  • Patent number: 9545615
    Abstract: Provided is a water-swelling layered double hydroxide characterized by having an organic sulfonic acid anion (A?) between layers, and by being represented by the below mentioned general formula (1): QZR(OH)2(Z+1)(A?)(1?y)(Xn?)y/n.mH2O . . . (1). Here, Q is a divalent metal, R is a trivalent metal, A? is an organic sulfonic acid anion, m is a real number greater than 0, and z is in the range of 1.8?z?4.2. Xn? is the n-valent anion remaining without A? substitution, n is 1 or 2, y represents the remaining portion of Xn?, and 0?y<0.4.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: January 17, 2017
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Nobuo Iyi, Yasuo Ebina, Takayoshi Sasaki
  • Patent number: 9543500
    Abstract: At least two types of dielectric materials such as oxide nanosheets having a layered perovskite structure that differ from each other are laminated, and the nanosheets are bonded to each other via an ionic material, thereby producing a superlattice structure-having ferroelectric thin film. Having the layered structure, the film can exhibit ferroelectricity as a whole, though not using a ferroelectric material therein. Accordingly, there is provided a ferroelectric film based on a novel principle, which is favorable for ferroelectric memories and others and which is free from a size effect even though extremely thinned.
    Type: Grant
    Filed: October 4, 2011
    Date of Patent: January 10, 2017
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Minoru Osada, Takayoshi Sasaki
  • Patent number: 9324497
    Abstract: A thin film capacitor includes a substrate and a dielectric thin film element formed on the substrate. The substrate can include an Si plate, an SiO2 film on the Si plate, and a Ti film formed on the SiO2 film. The dielectric thin film element includes a lower electrode, a dielectric thin film on the lower electrode, and an upper electrode formed on the dielectric thin film. The dielectric thin film is a thin film formed of a nanosheet, and a void portion of the dielectric thin film is filled with a p-type conductive organic polymer. Ti0.87O2, Ca2Nb3O10 or the like, is used as a dielectric material to form a major component of the nanosheet. As the p-type conductive organic polymer, polypyrrole, polyaniline, polyethylene dioxythiophene or the like, is suitable.
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: April 26, 2016
    Assignees: MURATA MANUFACTURING CO., LTD., NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Takafumi Okamoto, Minoru Osada, Takayoshi Sasaki
  • Patent number: 9187339
    Abstract: Disclosed is an organic dispersion comprising a flaky titanium oxide particle having a high crystallinity and high light permeability contained in an organic solvent. The dispersion can be prepared by a method comprising preparing an aqueous dispersion of a flaky titanium oxide particle containing an organic cation, centrifuging the aqueous dispersion to produce a precipitate, and adding the precipitate to an organic solvent, or a method comprising lyophilizing the aqueous dispersion to produce a lyophilized material and mixing the lyophilized material to an organic solvent. When the organic dispersion is used, it becomes possible to form a film comprising a monolayer of a titanium oxide nanosheet densely arranged therein by such a simple manner that the dispersion is coated on a base material and drying the dispersion. The film thus produced has a photocatalytic activity and a super-hydrophilic property.
    Type: Grant
    Filed: September 4, 2008
    Date of Patent: November 17, 2015
    Assignees: ISHIHARA SANGYO KAISHA, LTD., INDEPENDENT ADMINISTRATIVE INSTITUTION NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Takayoshi Sasaki, Yasuo Ebina, Hirofumi Taniguchi, Yusuke Uesusuki
  • Patent number: 9082551
    Abstract: A high dielectric nanosheet laminate is produced by laminating nanosheets, each of which has a thickness of 10 nm or less and is formed of an oxide that has a perovskite structure wherein at least four NbO6 octahedrons, TaO6 octahedrons or TiO6 octahedrons are included in a unit lattice. Consequently, the high dielectric nanosheet laminate is capable of achieving a high dielectric constant and a satisfactory insulation property, which are preferable for high dielectric nanosheet multilayer capacitors or the like, at the same time even if formed very thin.
    Type: Grant
    Filed: May 18, 2012
    Date of Patent: July 14, 2015
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Minoru Osada, Yasuo Ebina, Takayoshi Sasaki
  • Patent number: 9057022
    Abstract: A luminescent nanosheet has perovskite octahedral crystal units combined together in a planar configuration. The octahedral crystal units each have a multistacked crystal sheet structure. The octahedral crystal units are multistacked over at least 3 high in a direction vertical to a sheet plane, and an element providing a luminescence center is solid-solubilized between the multistacked octahedral crystal units.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: June 16, 2015
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Tadashi Ozawa, Takayoshi Sasaki
  • Patent number: 9012354
    Abstract: Disclosed is a method for forming a photocatalyst thin film, which is characterized in that a photocatalyst thin film containing a niobium-alkali metal complex oxide is formed by forming and then firing a layer containing a niobia nanosheet on the surface of a base containing an alkali metal.
    Type: Grant
    Filed: February 8, 2008
    Date of Patent: April 21, 2015
    Assignee: Central Japan Railway Company
    Inventors: Christopher Cordonier, Tetsuya Shichi, Kenichi Katsumata, Yasuhiro Katsumata, Akira Fujishima, Takafumi Numata, Takayoshi Sasaki
  • Patent number: 8828488
    Abstract: To provide a method for producing a thin film consisting of nanosheet monolayer film(s) and use of the thin film obtained thereby. The method for producing a thin film consisting of nanosheet monolayer film(s) by a spin coat method according to the invention comprises a step for preparing an organic solvent sol formed by allowing nanosheets obtained by the exfoliation of an inorganic layered compound to be dispersed in an organic solvent; and a step for dropping the organic solvent sol onto a substrate and rotating the substrate using a spin coater. Preferably, the nanosheet size, the organic solvent sol concentration and the spin coater rotation speed are controlled.
    Type: Grant
    Filed: August 22, 2012
    Date of Patent: September 9, 2014
    Assignee: National Institute For Materials Science
    Inventors: Takayoshi Sasaki, Kazuko Saruwatari, Kazuaki Matsuba, Kousyo Akatsuka, Yasuo Ebina, Minoru Osada
  • Publication number: 20140205526
    Abstract: A luminescent nanosheet has perovskite octahedral crystal units combined together in a planar configuration. The octahedral crystal units each have a multistacked crystal sheet structure. The octahedral crystal units are multistacked over at least 3 high in a direction vertical to a sheet plane, and an element providing a luminescence center is solid-solubilized between the multistacked octahedral crystal units.
    Type: Application
    Filed: March 7, 2014
    Publication date: July 24, 2014
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Tadashi OZAWA, Takayoshi SASAKI
  • Publication number: 20140150966
    Abstract: A high dielectric nanosheet laminate is produced by laminating nanosheets, each of which has a thickness of 10 nm or less and is formed of an oxide that has a perovskite structure wherein at least four NbO6 octahedrons, TaO6 octahedrons or TiO6 octahedrons are included in a unit lattice. Consequently, the high dielectric nanosheet laminate is capable of achieving a high dielectric constant and a satisfactory insulation property, which are preferable for high dielectric nanosheet multilayer capacitors or the like, at the same time even if formed very thin.
    Type: Application
    Filed: May 18, 2012
    Publication date: June 5, 2014
    Inventors: Minoru Osada, Yasuo Ebina, Takayoshi Sasaki
  • Publication number: 20140127113
    Abstract: To produce scaly silica particles in which formation of irregular particles is prevented. A process for producing scaly silica particles, which comprises a step of subjecting a silica powder containing silica agglomerates having scaly silica particles agglomerated, to acid treatment at a pH of at most 2, a step of subjecting the silica powder subjected to the acid treatment, to alkali treatment at a pH of at least 8 to deflocculate the silica agglomerates, and a step of wet disintegrating the silica powder subjected to the alkali treatment to obtain scaly silica particles.
    Type: Application
    Filed: October 24, 2013
    Publication date: May 8, 2014
    Applicant: AGC Si-Tech Co., Ltd.
    Inventors: Takayoshi SASAKI, Ikuyo NOMURA, Shinnosuke ARIMITSU, Hiroyoshi MIYAHARA
  • Patent number: 8710730
    Abstract: A luminescent nanosheet has perovskite octahedral crystals combined together in a planar configuration, and the octahedral crystals each have a multistacked crystal sheet structure wherein the octahedral crystals are multistacked over at least 3 folds in the direction vertical to a sheet plane, and an element providing a luminescence center is solid-solubilized between the multistacked octahedral crystals.
    Type: Grant
    Filed: July 13, 2009
    Date of Patent: April 29, 2014
    Assignee: National Institute for Materials Science
    Inventors: Tadashi Ozawa, Takayoshi Sasaki
  • Publication number: 20140036410
    Abstract: A thin film capacitor includes a substrate and a dielectric thin film element formed on the substrate. The substrate can include an Si plate, an SiO2 film on the Si plate, and a Ti film formed on the SiO2 film. The dielectric thin film element includes a lower electrode, a dielectric thin film on the lower electrode, and an upper electrode formed on the dielectric thin film. The dielectric thin film is a thin film formed of a nanosheet, and a void portion of the dielectric thin film is filled with a p-type conductive organic polymer. Ti0.87O2, Ca2Nb3O10 or the like, is used as a dielectric material to form a major component of the nanosheet. As the p-type conductive organic polymer, polypyrrole, polyaniline, polyethylene dioxythiophene or the like, is suitable.
    Type: Application
    Filed: October 10, 2013
    Publication date: February 6, 2014
    Applicants: National Institute for Materials Science, Murata Manufacturing Co., Ltd.
    Inventors: Toshihiro Okamatsu, Minoru Osada, Takayoshi Sasaki