Patents Assigned to Tohoku University
  • Patent number: 8044367
    Abstract: A scintillator for neutron detection, comprising a metal fluoride crystal containing, as constituent elements, a metal having a valence of 2 or higher, such as calcium, aluminum or yttrium; lithium; and fluorine, the metal fluoride crystal containing 1.1 to 20 atoms per unit volume (atoms/nm3) of 6Li, having an effective atomic number of 10 to 40, containing a lanthanoid such as cerium, praseodymium or europium, and being represented by, for instance, LiCaAlF6, LiSrAlF6 and LiYF4. The scintillator for neutron detection has high sensitivity to neutron rays, and is reduced in a background noise attributed to ? rays.
    Type: Grant
    Filed: March 17, 2009
    Date of Patent: October 25, 2011
    Assignees: Tokuyams Corporation, Tohoku University
    Inventors: Akira Yoshikawa, Takayuki Yanagida, Kentaro Fukuda, Sumito Ishizu, Noriaki Kawaguchi, Toshihisa Suyama
  • Patent number: 8039893
    Abstract: There is provided a semiconductor device formed of a highly integrated high-speed CMOS inverter coupling circuit using SGTs provided on at least two stages. A semiconductor device according to the present invention is formed of a CMOS inverter coupling circuit in which n (n is two or above) CMOS inverters are coupled with each other, each of the n inverters has: a pMOS SGT; an nMOS SGT, an input terminal arranged so as to connect a gate of the pMOS SGT with a gate of the nMOS SGT; an output terminal arranged to connect a drain diffusion layer of the pMOS SGT with a drain diffusion layer of the nMOS SGT in an island-shaped semiconductor lower layer; a pMOS SGT power supply wiring line arranged on a source diffusion layer of the pMOS SGT; and an nMOS SGT power supply wiring line arranged on a source diffusion layer of the NMOS SGT, and an n?1th output terminal is connected with an nth input terminal.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: October 18, 2011
    Assignees: Unisantis Electronics (Japan) Ltd., Tohoku University
    Inventors: Fujio Masuoka, Hiroki Nakamura
  • Publication number: 20110249221
    Abstract: A lighting device includes: a light guide plate; a light source disposed on a side face of the light guide plate; and a light modulation element disposed on a surface or in the inside of the light guide plate and adhered to the light guide plate. The light modulation element has a pair of transparent substrates disposed separately and oppositely, a pair of electrodes provided on respective surfaces of the pair of transparent substrates, and a light modulation layer provided in a gap between the pair of transparent substrates. The light modulation layer includes a first region, having optical anisotropy, responsive to an electric field, and a second region, having optical anisotropy, unresponsive to an electric field. The second region has a striped structure with average striped texture size of 0.05 ?m to 10 ?m both inclusive in a short axis direction.
    Type: Application
    Filed: March 30, 2011
    Publication date: October 13, 2011
    Applicants: Tohoku University, Sony Corporation
    Inventors: Tatsuo Uchida, Takahiro Ishinabe, Tohru Kawakami, Tomoaki Suzuki, Kentaro Okuyama, Akira Ebisui, Harumi Sato, Mamoru Mizuno, Masahiro Ikeda, Shogo Shinkai
  • Patent number: 8034471
    Abstract: In a perpendicular magnetic recording medium in which at least a soft magnetic underlayer, an orientation control layer, a magnetic recording layer and a protective layer are formed on a non-magnetic substrate in order from the bottom, the orientation control layer has a laminated structure of two or more layers including an intermediate layer and a seed layer which is disposed closer to the non-magnetic substrate than the intermediate layer. The seed layer includes two or more kinds of elements having a face-centered cubic structure, has face-centered cubic (111) plane crystals oriented in a direction perpendicular to a substrate surface, and has a pseudo-hexagonal structure.
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: October 11, 2011
    Assignees: Showa Denko K.K., Kabushiki Kaisha Toshiba, Tohoku University
    Inventors: Shinichi Ishibashi, Migaku Takahashi, Shin Saito, Yuzo Sasaki, Atsushi Hashimoto, Gohei Kurokawa, Tomoyuki Maeda, Akihiko Takeo
  • Patent number: 8034472
    Abstract: The present invention provides a magnetic recording medium which is capable of improving the perpendicular orientation of a perpendicular magnetic recording layer while maintaining a writing performance during recording and obtaining both an improvement in the perpendicular orientation and fine magnetic crystal particles with a uniform diameter, and which enables information to be recorded or reproduced at high density, a method of manufacturing the same, and a magnetic recording/reproducing apparatus. A magnetic recording medium 10 according to the present invention includes at least a soft magnetic underlayer 2, an orientation control layer 3, a magnetic recording layer 4, and a protective layer 5 formed on a non-magnetic substrate 1. The orientation control layer 3 has a seed layer 6 and an intermediate layer 7. The seed layer 6 is made of a Cu—Ti alloy that has a face-centered cubic structure and includes Cu as a main component.
    Type: Grant
    Filed: August 17, 2009
    Date of Patent: October 11, 2011
    Assignees: Showa Denko K.K., Kabushiki Kaisha Toshiba, Tohoku University
    Inventors: Shinichi Ishibashi, Migaku Takahashi, Shin Saito, Yuzo Sasaki, Atsushi Hashimoto, Gohei Kurokawa, Tomoyuki Maeda, Akihiko Takeo
  • Publication number: 20110242146
    Abstract: A lighting device includes: a light guide plate; a light source; and a light modulation element disposed on a surface of or in the inside of the light guide plate, and adhered to the light guide plate. The light modulation element has a pair of transparent substrates, a first electrode provided on a surface of one of the transparent substrates, a second electrode provided on a surface of the other of the transparent substrates, and a light modulation layer, provided in a gap between the transparent substrates, exhibiting a light-scattering property or a light-transmitting property concerning light from the light source depending on intensity of an electric field. One or both of the first and second electrodes include partial electrodes. First partial electrodes of the partial electrodes are adjacent to second partial electrodes of the partial electrodes, and have irregular shapes on edges adjacent to the second partial electrodes.
    Type: Application
    Filed: March 30, 2011
    Publication date: October 6, 2011
    Applicants: Sony Corporation, Tohoku University
    Inventors: Tatsuo Uchida, Takahiro Ishinabe, Tohru Kawakami, Kentaro Okuyama, Mamoru Mizuno
  • Patent number: 8030618
    Abstract: A pellet 4 for use in spectrometry includes a first powder 41 of a light transmitting material in a compression-molded form, and a second powder 42 which is hydrophilic and water-insoluble and is dispersedly mixed in the first powder. A sample 40 to be subjected to spectrometry is e.g. in a powdery form and dispersedly mixed in the first and the second powders 41 and 42. When the sample 40 is a hydrate, the second powder 42 exerts the effect of accelerating dehydration of the sample 40, so that stable spectrum data on the sample in the dehydrated state is obtained early. This makes it possible to perform a processing such as identification of the sample 40 early and precisely.
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: October 4, 2011
    Assignees: Arkray, Inc., Tohoku University
    Inventors: Masashi Okamoto, Yuichi Ogawa
  • Publication number: 20110230447
    Abstract: Disclosed are: a compound which can be produced through a chemical synthesis at low cost, has an excellent osteogenesis-promoting activity, has high affinity for a bone, and can be applied without the need of any special DDS; and a method for promoting osteogenesis by administering the compound and applying the promotion of osteogenesis to the formation or regeneration of a bone. Specifically disclosed are: an osteogenesis promoter or a pharmaceutical composition comprising [4-(methylthio)phenylthio]methanebisphosphonic acid, which is one of bisphosphonic acids, or a pharmaceutically acceptable salt thereof as an active ingredient; and a method for promoting osteogenesis, which comprises administering the osteogenesis promoter or the pharmaceutical composition to a subject to be treated.
    Type: Application
    Filed: August 5, 2009
    Publication date: September 22, 2011
    Applicants: Tohoku University, Showa University
    Inventors: Hisashi Shinoda, Kaoru Igarashi, Shinobu Murakami, Keiko Suzuki
  • Patent number: 8017400
    Abstract: Transformed cells are efficiently selected using a mutant ALS gene having high specificity to PC herbicides. The transformation method comprises the steps of: transforming a host cell with a recombination vector containing a gene of interest and a gene coding for a mutant acetolactate synthase having mutation of glycine corresponds to position 95 of the amino acid sequence of a wild-type acetolactate synthase derived from rice to alanine; culturing the transformed cell obtained in the former step in the presence of a pyrimidinyl carboxy herbicide; and wherein the gene coding for the mutant acetolactate synthase is used as a selection marker.
    Type: Grant
    Filed: May 9, 2006
    Date of Patent: September 13, 2011
    Assignees: Kumiai Chemical Industry Co., Ltd., Tohoku University
    Inventors: Kinya Toriyama, Ayako Okuzaki, Koichiro Kaku, Kiyoshi Kawai, Tsutomu Shimizu
  • Publication number: 20110215384
    Abstract: In manufacturing processes of a semiconductor device including a shallow trench element isolation region and an interlayer insulating film of a multilayer structure, it is necessary to repeatedly use CMP, but since the CMP itself is costly, the repeated use of the CMP is a cause to increase the manufacturing cost. As an insulating film for use in a shallow trench (ST) element isolation region and/or a lowermost-layer interlayer insulating film, use is made of an insulating coating film that can be coated by spin coating. The insulating coating film has a composition expressed by ((CH3)nSiO2-n/2)x(SiO2)1-x(where n=1 to 3 and 0?x?1.0) and a film with a different relative permittivity k is formed by selecting heat treatment conditions. The STI element isolation region can be formed by modifying the insulating coating film completely to a SiO2 film, while the interlayer insulating film with a small relative permittivity k can be formed by converting it to a state not completely modified.
    Type: Application
    Filed: August 14, 2008
    Publication date: September 8, 2011
    Applicants: National University Corporation Tohoku University, Tokyo Electron Limited, Ube Industries, Ltd., Ube-Nitto Kasei Co., Ltd.
    Inventors: Tadahiro Ohmi, Takaaki Matsuoka, Atsutoshi Inokuchi, Kohei Watanuki, Tadashi Koike, Tatsuhiko Adachi
  • Patent number: 8012613
    Abstract: A magnetic recording medium is provided, which has at least one soft magnetic layer, at least one seed layer, at least one underlayer and at least one perpendicular magnetic recording layer, and is characterized in that the or each seed layer is comprised of a covalently bonded material. The covalently bonded material preferably predominantly comprises a nitride having a hexagonal crystal structure, more preferably, predominantly comprises aluminum nitride having a hexagonal wurtzite crystal structure. This magnetic recording medium is superior in recording and reproducing an information with high density.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: September 6, 2011
    Assignees: Showa Denko K.K., Toshiba Corporation, Tohoku University
    Inventors: Migaku Takahashi, Shin Saito, Tomoyuki Maeda, Akihiko Takeo, Yuzo Sasaki, Ryuji Sakaguchi
  • Patent number: 8008184
    Abstract: A seed layer is formed on a surface of an insulating film and along a recess of the insulating film, and after a copper wiring is buried in the recess, a barrier film is formed, and an excessive metal is removed from the wiring. On a surface of a copper lower layer conductive path exposed at the bottom of the recess, a natural oxide of the copper is reduced or removed. On a substrate from which the natural oxide is reduced or removed, the seed layer, composed of a self-forming barrier metal having oxidative tendency higher than that of copper or an alloy of such metal and copper, is formed. The substrate is heated after burying copper in the recess. Thus, a barrier layer is formed by oxidizing the self-forming barrier metal. An excessive portion of the self-forming barrier metal is deposited on a surface of the buried copper.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: August 30, 2011
    Assignees: Tokyo Electron Limited, Tohoku University
    Inventors: Kenji Matsumoto, Shigetoshi Hosaka, Junichi Koike, Koji Neishi
  • Patent number: 8001583
    Abstract: A system provides definitions of network states, and identifies a cause for the anomaly upon detection. A traffic measuring portion (characteristic quantity generating portion) counts the number of packets/time slot classified by traffic type with respect to network traffic, generating a characteristic quantity; a memory portion stores information about the characteristic quantity; a portion calculates correlation coefficients between each pair of characteristic quantities classified by traffic type; a portion generates a histogram from correlation coefficients; a portion for determining the severity of an anomaly based on the histogram; a portion evaluates the similarity of an anomaly of interest to a reference anomaly using the occurrence probabilities of correlation coefficients; and a portion assigns a color to each pixel according to its occurrence probability value, generating an n×n picture.
    Type: Grant
    Filed: November 8, 2006
    Date of Patent: August 16, 2011
    Assignee: Tohoku University
    Inventors: Yuji Waizumi, Hiroshi Tsunoda, Yoshiaki Nemoto
  • Patent number: 7993762
    Abstract: The present invention relates to a magnetic thin film containing a L11 type Co—Pt—C alloy in which atoms are orderly arranged, and can realize an order degree excellent in regard to the L11 type Co—Pt—C alloy to achieve excellent magnetic anisotropy of the magnetic thin film. Therefore, in the various application devices using the magnetic thin film, it is possible to achieve a large capacity process and/or a high density process thereof in a high level.
    Type: Grant
    Filed: December 4, 2009
    Date of Patent: August 9, 2011
    Assignees: Tohoku University, Fuji Electric Device Technology Co., Ltd.
    Inventors: Takehito Shimatsu, Hideo Sato, Osamu Kitakami, Satoshi Okamoto, Hajime Aoi, Hiroyasu Kataoka
  • Patent number: 7994063
    Abstract: Disclosed is a method for cleaning a semiconductor substrate that can solve a problem of a conventional cleaning method which should include at least five steps for cleaning a substrate such as a semiconductor substrate. The method for cleaning a semiconductor substrate comprises a first step of cleaning a substrate with ultrapure water containing ozone, a second step of cleaning the substrate with ultrapure water containing a surfactant, and a third step of removing an organic compound derived from the surfactant, with a cleaning liquid containing ultrapure water and 2-propanol. After the third step, plasma of noble gas such as krypton is applied to the substrate to further remove the organic compound derived from the surfactant.
    Type: Grant
    Filed: April 10, 2009
    Date of Patent: August 9, 2011
    Assignees: National University Corporation Tohoku University, Stella Chemifa Corporation
    Inventors: Tadahiro Ohmi, Akinobu Teramoto, Rui Hasebe, Masayuki Miyashita
  • Patent number: 7985397
    Abstract: A method of treating hydrogen sulfide or producing hydrogen which comprises disposing a liquid tank having a photocatalyst electrode comprising a photocatalyst and a liquid tank having a metal electrode so that the two liquid tanks are separated from each other by a cation-exchange membrane, placing a liquid containing either hydrogen sulfide or an organic substance in the liquid tank having the photocatalyst electrode, electrically connecting the photocatalyst electrode to the metal electrode, and exposing the photocatalyst to a light. The liquid to be placed in the liquid tank having the metal electrode preferably is an acidic solution. The photocatalyst preferably comprises a metal sulfide, and preferably is fine particles having a layered nanocapsule structure.
    Type: Grant
    Filed: March 29, 2006
    Date of Patent: July 26, 2011
    Assignees: Nittetsu Mining Co., Ltd., Tohoku University
    Inventors: Hiromichi Matsumoto, Akira Kishimoto, Kazuyuki Tohji
  • Publication number: 20110177355
    Abstract: Provided is an Al alloy member with an excellent mechanical strength that is sufficient for use in large-scale manufacturing apparatuses. The Al alloy member is characterized in that, in mass %, Mg concentration is 5.0% or less, Ce concentration is 15% or less, Zr concentration is 0.15% or less, the balance comprises Al and unavoidable impurities, the elements of the unavoidable impurities are respectively 0.01% or less, and the Vickers hardness of the Al alloy member is greater than 30.
    Type: Application
    Filed: July 28, 2009
    Publication date: July 21, 2011
    Applicants: National University Corporation Tohoku University, Nippon Light Metal Company, Ltd.
    Inventors: Tadahiro Ohmi, Masafumi Kitano, Minoru Tahara, Hisakazu Ito, Kota Shirai, Masayuki Saeki
  • Patent number: 7975901
    Abstract: A bonding apparatus including a chamber for maintaining an inert gas atmosphere; a first plasma torch for performing a surface treatment on pads and electrodes, the first plasma torch being attached in the chamber, to apply gas plasma to a substrate and a semiconductor chip that is placed inside the chamber; a second plasma torch for performing a surface treatment on an initial ball and/or wire at a tip end of a capillary that is positioned inside the chamber, the second plasma torch being attached in the chamber, to apply gas plasma to the initial ball and/or wire; and a bonding unit for bonding the surface-treated initial ball and/or wire to the surface-treated pads and electrodes in the chamber, thereby cleaning of the surface of the electrodes and pads as well as the wire can be effectively performed.
    Type: Grant
    Filed: June 7, 2010
    Date of Patent: July 12, 2011
    Assignees: Shinkawa Ltd., Tohoku University
    Inventors: Toru Maeda, Tetsuya Utano, Akinobu Teramoto
  • Patent number: 7977796
    Abstract: A gas or an insulating material having a relative dielectric constant of not more than 2.5 on average is interposed between a first wiring layer and a second wiring layer included in a multilayer wiring structure. Between a wiring of the first wiring layer and a wiring of the second wiring layer, a conductive connector is arranged. Between a predetermined wiring of the first wiring layer and a predetermined wiring of the second wiring layer, an insulating heat conductor having a relative dielectric constant of not more than 5 is arranged.
    Type: Grant
    Filed: August 24, 2007
    Date of Patent: July 12, 2011
    Assignees: National University Corporation Tohoku University, Foundation for Advancement of International Science
    Inventor: Tadahiro Ohmi
  • Patent number: 7968470
    Abstract: A nitriding process is performed at a process temperature of 500° C. or more by causing microwave-excited high-density plasma of a nitrogen-containing gas to act on silicon in the surface of a target object, inside a process container of a plasma processing apparatus. The plasma is generated by supplying microwaves into the process container from a planar antenna having a plurality of slots.
    Type: Grant
    Filed: June 7, 2006
    Date of Patent: June 28, 2011
    Assignees: Tohoku University, Tokyo Electron Limited
    Inventors: Tadahiro Ohmi, Akinobu Teramoto, Minoru Honda, Toshio Nakanishi