Patents Assigned to Tohoku University
  • Patent number: 10333280
    Abstract: A configuration of a DFB laser-based wavelength tunable laser is well known, but long resonators have difficulty in forming uniform resonators due to production variations, thereby inducing limitation in narrowing the spectral linewidth in the DFB laser-based wavelength tunable laser as well. In the semiconductor laser device of the present invention, a semiconductor laser that oscillates in a single mode and a low-loss lightwave circuit using SiO2 glass are arranged on the common substrate. The lightwave circuit is configured such that part of output light from the semiconductor laser propagates through a certain length of an optical path, and then is reflected by a reflector and is fed back to the semiconductor laser. Output light from the semiconductor laser and an input waveguide of the lightwave circuit can also be configured to be optically connected directly to each other. The present invention can provide a compact laser device with a narrowed spectral linewidth and stable wavelength controllability.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: June 25, 2019
    Assignees: Nippon Telegraph and Telephone Corporation, Tohoku University
    Inventors: Hiroyuki Ishii, Naoki Fujiwara, Kei Watanabe, Mikitaka Itoh, Keisuke Kasai, Masataka Nakazawa
  • Publication number: 20190185408
    Abstract: Provided is a method for regenerating an aromatic amide compound into a corresponding aromatic nitrile compound, the method realizing a dehydration reaction of providing a target compound selectively at a high yield with generation of a by-product being suppressed. Also provided is a method for producing an aromatic nitrile compound that decreases the number of steps of dehydration reaction and significantly improves the reaction speed at a pressure close to normal pressure. Furthermore, the above-described production method is applied to a carbonate ester production method to provide a method for producing carbonate ester efficiently. The above-described objects are achieved by a method for producing an aromatic nitrile compound including a dehydration reaction of dehydrating an aromatic amide compound, in which the dehydration reaction uses diphenylether.
    Type: Application
    Filed: June 20, 2017
    Publication date: June 20, 2019
    Applicants: Mitsubishi Gas Chemical Company, Inc., Tohoku University, Nippon Steel & Sumitomo Metal Corporation, Nippon Steel & Sumikin Engineering Co., Ltd.
    Inventors: Yousuke SHINKAI, Hongyu LIU, Hidefumi HARADA, Yoshinori ISAHAYA, Keiichi TOMISHIGE, Yoshinao NAKAGAWA, Masazumi TAMURA, Kimihito SUZUKI, Yasuki NAMIKI
  • Publication number: 20190183882
    Abstract: A problem to be solved by the present invention is to provide a novel preventive or therapeutic agent for pulmonary hypertension containing as an active ingredient a compound that has not been known for a therapeutic effect on pulmonary hypertension heretofore. The present invention provides a preventive or therapeutic agent for pulmonary hypertension containing an ingredient having a selenoprotein P activity-inhibiting action.
    Type: Application
    Filed: March 28, 2017
    Publication date: June 20, 2019
    Applicant: TOHOKU UNIVERSITY
    Inventors: Hiroaki SHIMOKAWA, Kimio SATOH, Nobuhiro KIKUCHI
  • Publication number: 20190185504
    Abstract: An object of the present invention is to solve the various problems with the conventional process for producing a sugar fatty acid ester, such as a sucrose fatty acid ester (FASuc), and to provide a process which has advantages such as no production of a soap by-product and ease of separation between the catalyst and the product and also enables efficient synthesis by a simple operation under mild conditions in a flow system, and to provide a composition including the sugar fatty acid ester. The present invention is directed to a process for producing a sugar fatty acid ester by a transesterification reaction of a fatty acid ester and a saccharide using an anion exchanger as a catalyst, and to a composition including such a sugar fatty acid ester.
    Type: Application
    Filed: January 16, 2017
    Publication date: June 20, 2019
    Applicant: TOHOKU UNIVERSITY
    Inventors: Naomi KITAKAWA, Tomone SASAYAMA, Yuto KAMIKANDA
  • Publication number: 20190185539
    Abstract: To provide a therapy and a diagnosis of cancer or an infection using recognition mechanism of a T-cell receptor.
    Type: Application
    Filed: August 4, 2017
    Publication date: June 20, 2019
    Applicant: TOHOKU UNIVERSITY
    Inventor: Koetsu Ogasawara
  • Publication number: 20190184737
    Abstract: An omni-directional rotational drive mechanism and a moving body in which production and maintenance can be facilitated, while the size can be reduced, by making the number of components smaller. A rotating body provided for a wheel member rotatable about a ring-shaped shaft having a rotating shaft of the wheel member as its center. The rotating body is configured to rotate integrally with the wheel member about the rotating shaft. A pair of worms rotatable about the same shaft as the rotating shaft of the wheel member. A pair of worm wheels are provided for the wheel member so as to be rotatable by meshing with different worms, and capable of transmitting each of rotations to the rotating body. The rotating body is configured so as to rotate or stop with respect to the wheel member in accordance with the rotational direction and the rotational speed of the respective worms.
    Type: Application
    Filed: March 31, 2017
    Publication date: June 20, 2019
    Applicant: TOHOKU UNIVERSITY
    Inventors: Kenjiro TADAKUMA, Eri TAKANE, Masahiro FUJITA, Masashi KONYO, Satoshi TADOKORO
  • Publication number: 20190186844
    Abstract: A latent heat storage device includes: a heat transfer cylindrical body allowing a flow of a heat medium inside thereof and being rotatable about a longitudinal axis as a center of rotation; a fixed blade being adjacent to or in a slidable contact with an outer peripheral surface of the heat transfer cylindrical body; and a latent heat storage material disposed around the heat transfer cylindrical body, wherein by rotation of the heat transfer cylindrical body, the fixed blade scrapes a solidified body of the latent heat storage material adhering to the outer peripheral surface of the heat transfer cylindrical body off the outer peripheral surface of the heat transfer cylindrical body, and creates circulation of the latent heat storage material.
    Type: Application
    Filed: August 18, 2017
    Publication date: June 20, 2019
    Applicant: TOHOKU UNIVERSITY
    Inventors: Nobuhiro MARUOKA, Hiroshi NOGAMI, Taichi TSUTSUMI, Akihisa ITO
  • Publication number: 20190189917
    Abstract: A magnetic tunnel junction element includes, in a following stack order, an underlayer formed of a metal material, a fixed layer formed of a ferromagnetic body, a magnetic coupling layer formed of a nonmagnetic body, a reference layer formed of a ferromagnetic body, a barrier layer formed of a nonmagnetic body, and a recording layer formed of a ferromagnetic body, or alternatively, the magnetic tunnel junction element includes, in a following stack order, a recording layer formed of a ferromagnetic body, a barrier layer formed of a nonmagnetic body, a reference layer formed of a ferromagnetic body, a magnetic coupling layer formed of a nonmagnetic body, an underlayer formed of a metal material, and a fixed layer formed of a ferromagnetic body, wherein the fixed layer is formed and stacked after performing plasma treatment to a surface of the underlayer having been formed.
    Type: Application
    Filed: March 21, 2017
    Publication date: June 20, 2019
    Applicant: TOHOKU UNIVERSITY
    Inventors: Hiroaki Honjo, Tetsuo Endoh, Shoji Ikeda, Hideo Sato, Hideo Ohno
  • Patent number: 10321817
    Abstract: An image display apparatus includes: a light source part generating a plurality of light rays corresponding to respective pixels in an image that changes over time; a projecting part defining an optical path from the light source part to an eye, and forming the image on a retina of the eye by projecting the generated light rays directly on the retina through the optical path; a splitting part splitting a plurality of reflection light rays from positions in a certain site of the eye on the optical path, the positions corresponding to the respective pixels; a detecting part detecting intensities of the reflection light rays that have been split; and a processing part obtaining parameters indicative of conditions of the site at the positions corresponding to the respective pixels, based on intensities of the generated light rays and the intensities of the reflection light rays, for the respective pixels.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: June 18, 2019
    Assignee: TOHOKU UNIVERSITY
    Inventors: Kazuhiro Hane, Toru Nakazawa, Takashi Sasaki
  • Patent number: 10324028
    Abstract: To provide a concentration measuring method with which the concentration of a predetermined chemical component can be accurately, quickly, and nondestructively measured down to a concentration range of an extremely small amount with a simple means, and to provide a concentration measuring method with which the concentration of a chemical component in an object to be measured can be accurately and quickly measured down to a concentration range of a nano-order extremely small amount in real time, the method having universality, i.e., the ability to be embodied in various forms and modes.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: June 18, 2019
    Assignee: TOHOKU UNIVERSITY
    Inventors: Shigetoshi Sugawa, Rihito Kuroda
  • Publication number: 20190175662
    Abstract: A cell product for prevention and/or treatment of vascular disorders such as aortic aneurysm, comprising a SSEA-3-positive pluripotent stem cell derived from a mesenchymal tissue in a living body or a cultured mesenchymal cell (Muse cell).
    Type: Application
    Filed: July 28, 2017
    Publication date: June 13, 2019
    Applicants: TOHOKU UNIVERSITY, LIFE SCIENCE INSTITUTE, INC.
    Inventors: Yoshikatsu SAIKI, Mari DEZAWA, Katsuhiro HOSOYAMA
  • Publication number: 20190167572
    Abstract: A capsule device, which can induce vascular bed formation and formation of a space for cell transplantation in subcutaneous tissue in which the device is implanted, is provided. A sustained drug release capsule device, which is to be subcutaneously implanted for subcutaneous sustained release of an angiogenesis-inducing factor as well as formation of a vascular bed as a basis for cell transplantation and a space for cell transplantation in cell therapy, the capsule being made of a material which is not soluble in a biological body and does not adhere to a biological body, and having micropores for sustained release of the angiogenesis-inducing factor.
    Type: Application
    Filed: November 7, 2016
    Publication date: June 6, 2019
    Applicant: TOHOKU UNIVERSITY
    Inventors: Toshiaki ABE, Nobuhiro NAGAI, Shinji YAMADA, Masafumi GOTO, Kozue IMURA, Hirokazu KAJI
  • Publication number: 20190164896
    Abstract: A semiconductor device includes a substrate, a conductive wiring which comprises cobalt or copper and is electrically connected to the substrate, an insulating material which electrically isolates the conductive wiring from neighboring wiring, and a first barrier layer which comprises a first cobalt alloy and is disposed between the conductive wiring and the insulating material.
    Type: Application
    Filed: November 29, 2017
    Publication date: May 30, 2019
    Applicant: TOHOKU UNIVERSITY
    Inventors: Junichi KOIKE, Reza ARGHAVANI
  • Publication number: 20190163722
    Abstract: A Fisher's exact test calculation apparatus includes a selection unit that selects summary tables for which a result of Fisher's exact test indicative of being significant will be possibly obtained from among a plurality of summary tables based on a parameter obtained in calculation in course of determining the result of Fisher's exact test, and a calculation unit that performs calculations for Fisher's exact test for each of the selected summary tables.
    Type: Application
    Filed: June 30, 2017
    Publication date: May 30, 2019
    Applicants: NIPPON TELEGRAPH AND TELEPHONE CORPORATION, TOHOKU UNIVERSITY
    Inventors: Satoshi HASEGAWA, Koki HAMADA, Koji CHIDA, Masao NAGASAKI, Kazuharu MISAWA
  • Publication number: 20190156705
    Abstract: Fisher's exact test is efficiently computed through secure computation. It is assumed that a, b, c and d are frequencies of a 2×2 contingency table, [a], [b], [c] and [d] are secure texts of the respective frequencies a, b, c and d, and N is an upper bound satisfying a+b+c+d?N. A reference frequency computation part 12 computes a secure text ([a0], [b0], [c0], [d0]) of a combination of reference frequencies (a0, b0, c0, d0) which are integers satisfying a0+b0=a+b, c0+d0=c+d, a0+c0=a+c, and b0+d0=b+d. A number-of-patterns determination part 13 determines integers h0 and h1 satisfying h0?h1. A pattern computation part 14 computes [ai]=[a0]+i, [bi]=[b0]?i, [ci]=[c0]?i and [di]=[d0]+i for i=h0, . . . , h1, and obtains a set S={([ai], [bi], [ci], [di])}i of secure texts of combinations of frequencies (ai, bi, ci, di).
    Type: Application
    Filed: June 30, 2017
    Publication date: May 23, 2019
    Applicants: NIPPON TELEGRAPH AND TELEPHONE CORPORATION, TOHOKU UNIVERSITY
    Inventors: Koki HAMADA, Koji CHIDA, Satoshi HASEGAWA, Masao NAGASAKI, Kazuharu MISAWA
  • Publication number: 20190153571
    Abstract: A Fe-based shape memory alloy material, containing 25 atom % to 42 atom % of Mn, 9 atom % to 13 atom % of Al, 5 atom % to 12 atom % of Ni, and 5.1 atom % to 15 atom % of Cr, with the balance being Fe and unavoidable impurities; a method of producing the same; and a wire material and sheet material composed of the alloy material.
    Type: Application
    Filed: January 18, 2019
    Publication date: May 23, 2019
    Applicants: TOHOKU UNIVERSITY, FURUKAWA TECHNO MATERIAL CO., LTD., FURUKAWA ELECTRIC CO., LTD.
    Inventors: Toshihiro OMORI, Ryosuke KAINUMA, Yuki NOGUCHI, Sumio KISE, Toyonobu TANAKA
  • Patent number: 10293003
    Abstract: An object of the present invention is to provide a novel medical application to regenerative medicine that uses pluripotent stem cells (Muse cells). The present invention provides a cell preparation for treating chronic kidney disease that contains SSEA-3-positive pluripotent stem cells isolated from mesenchymal tissue in the body or cultured mesenchymal cells. The cell preparation of the present invention is based on a renal tissue regeneration mechanism by which Muse cells are made to selectively accumulate at a site of kidney disease and differentiate into cells that compose the kidney by administering Muse cells intravenously to a subject having the aforementioned disease.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: May 21, 2019
    Assignees: CLIO, INC., TOHOKU UNIVERSITY
    Inventors: Masanori Yoshida, Mari Dezawa
  • Publication number: 20190133803
    Abstract: A hallux valgus correction device (1) for correcting hallux valgus, the hallux valgus correction device including: a corrector (10) made of a superelastic alloy; and a fixture (2, 3, and 4) formed from a fabric to attach the corrector, in which the corrector has a hinge part (11) that is rotationally movable in the bending direction and the stretching direction of one toe or a plurality of toes in need of correction.
    Type: Application
    Filed: December 28, 2018
    Publication date: May 9, 2019
    Applicants: FURUKAWA TECHNO MATERIAL CO., LTD., FURUKAWA ELECTRIC CO., LTD., Tohoku University
    Inventors: Sumio KISE, Toyonobu TANAKA, Ryosuke KAINUMA, Toshihiro OMORI, Masahito HATORI, Tadakuni KAMEDA, Norihito SUZUKI
  • Patent number: 10283154
    Abstract: A magnetic recording medium includes a substrate, a barrier layer, a crystal grain size control layer, and a magnetic layer that are arranged in this order. The barrier layer includes at least one of oxides, nitrides, and carbides, and the crystal grain size control layer is a crystalline layer including Ag and having an average thickness in a range of 0.1 nm to 1 nm. The barrier layer makes contact with the crystal grain size control layer, and the magnetic layer includes an alloy having a L10 crystal structure and a (001) face orientation.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: May 7, 2019
    Assignees: SHOWA DENKO K.K., TOHOKU UNIVERSITY
    Inventors: Shintaro Hinata, Shin Saito, Takayuki Fukushima, Haruhisa Ohashi, Kazuya Niwa, Lei Zhang, Yuji Murakami, Hisato Shibata, Takehiro Yamaguchi, Tetsuya Kanbe, Tomoo Shige
  • Patent number: 10283594
    Abstract: A silicon carbide (SiC) structure and a method of forming the SiC structure are disclosed. The SiC structure includes an SiC substrate and a film provided on the SiC substrate. The SiC substrate contains both of a hexagonal close packed (hcp) structure and a face centered cubic (fcc) structure, and has only one of the hcp surface and the fcc surface, where the hcp surface includes atoms in the topmost layer whose rows overlap with rows of atoms in the third layer, while, the fcc surface includes atoms in the topmost layer whose rows are different from rows of atoms in the third layer.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: May 7, 2019
    Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., TOHOKU UNIVERSITY
    Inventors: Hiroyuki Nagasawa, Maki Suemitsu, Hirokazu Fukidome, Yasunori Tateno, Fuminori Mitsuhashi, Masaya Okada, Masaki Ueno