Patents Assigned to Akita University
  • Patent number: 11970654
    Abstract: An object of the present invention is to provide an environmentally friendly drilling fluid that has excellent cuttings transport capability and excellent hole cleaning capability. A drilling fluid according to the present disclosure is a drilling fluid containing water, biodegradable fibers, and a thickener. The thickener contains a biodegradable polysaccharide. The content of the biodegradable polysaccharide in the drilling fluid is greater than or equal to 0.01 g/L and less than or equal to 5 g/L.
    Type: Grant
    Filed: June 4, 2020
    Date of Patent: April 30, 2024
    Assignees: AKITA UNIVERSITY, KANEKA CORPORATION
    Inventors: Shigemi Naganawa, Ryutaro Mukai
  • Publication number: 20240026205
    Abstract: The present invention is directed to a drilling fluid containing water, biodegradable fibers, and a thickener. The thickener contains a water-absorbing silicate, and the biodegradable fibers have a fiber length of 5.0 to 50 mm.
    Type: Application
    Filed: December 3, 2021
    Publication date: January 25, 2024
    Applicants: AKITA UNIVERSITY, KANEKA CORPORATION
    Inventors: Shigemi NAGANAWA, Ryutaro MUKAI
  • Patent number: 11873389
    Abstract: A composition including a fluorine-containing polymer and a silicon-containing compound, wherein the phosphorus content in the composition is 20 ppm or less. Also disclosed is a molded article obtained from the composition, and a second composition containing a fluorine-containing polymer and a silicon-containing polymer, wherein a content of an amide solvent in the composition is less than 1000 ppm.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: January 16, 2024
    Assignees: Akita University, DAIKIN INDUSTRIES, LTD.
    Inventors: Kazuya Matsumoto, Mitsutoshi Jikei, Shushi Yamada, Tsuyoshi Noguchi, Fumihiro Kamiya, Yoshiho Yanagida
  • Patent number: 11759755
    Abstract: A fine bubble generator which is an ultrafine bubble generator includes a side wall whose inner face is cylindrical, and closing walls closing both ends of the side wall, respectively, with a gas-liquid discharge port in one of the closing walls, wherein a fluid inlet port is provided closer to the gas-liquid discharge port than is a midpoint between both closing walls, and the fluid inlet port penetrates the side wall in a tangential direction of the inner face of the side wall, wherein a spiral groove is formed in the inner face of side wall, and wherein the spiral groove has an angle of inclination of 1° to 10°.
    Type: Grant
    Filed: January 29, 2021
    Date of Patent: September 19, 2023
    Assignees: AKIMOKU IRON WORKS CO., LTD., AKITA UNIVERSITY
    Inventors: Akira Nakagawa, Wataru Sugiyama
  • Publication number: 20220228048
    Abstract: An object of the present invention is to provide an environmentally friendly drilling fluid that has excellent cuttings transport capability and excellent hole cleaning capability. A drilling fluid according to the present disclosure is a drilling fluid containing water, biodegradable fibers, and a thickener. The thickener contains a biodegradable polysaccharide. The content of the biodegradable polysaccharide in the drilling fluid is greater than or equal to 0.01 g/L and less than or equal to 5 g/L.
    Type: Application
    Filed: June 4, 2020
    Publication date: July 21, 2022
    Applicants: AKITA UNIVERSITY, KANEKA CORPORATION
    Inventors: Shigemi NAGANAWA, Ryutaro MUKAI
  • Publication number: 20220073722
    Abstract: A composition including a fluorine-containing polymer and a silicon-containing compound, wherein the phosphorus content in the composition is 20 ppm or less. Also disclosed is a molded article obtained from the composition, and a second composition containing a fluorine-containing polymer and a silicon-containing polymer, wherein a content of an amide solvent in the composition is less than 1000 ppm.
    Type: Application
    Filed: December 27, 2019
    Publication date: March 10, 2022
    Applicants: AKITA UNIVERSITY, DAIKIN INDUSTRIES, LTD.
    Inventors: Kazuya MATSUMOTO, Mitsutoshi JIKEI, Shushi YAMADA, Tsuyoshi NOGUCHI, Fumihiro KAMIYA, Yoshiho YANAGIDA
  • Patent number: 10815369
    Abstract: The invention provides a composition capable of providing a molded article that has excellent heat resistance and a small weight change against oxygen plasma exposure and fluorine plasma exposure during a semiconductor manufacturing step. The composition contains a fluorine-containing polymer and a hyperbranched polymer of a cage silsesquioxane with a specific structure.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: October 27, 2020
    Assignees: Akita University, DAIKIN INDUSTRIES, LTD.
    Inventors: Kazuya Matsumoto, Mitsutoshi Jikei, Sumito Yamakawa, Tadatake Sakurada, Fumihiro Kamiya, Tsuyoshi Noguchi
  • Patent number: 10790086
    Abstract: Provided is a method of manufacturing a metal nano coil which is suitable for mass production and results in a lower manufacturing cost. The method of manufacturing a metal nano coil includes the steps of: forming, with tension applied to a core member composed of nanofiber of a polymer, a metal thin film on a surface of the core member to fabricate a metal-covered nanofiber; reducing the tension of the metal-covered nanofiber; and heating, with the tension reduced, the metal-covered nanofiber to at or above a boiling point or a thermal decomposition temperature of the polymer and at or below the melting point of the metal thin film to vaporize the core member and shrink the metal thin film into a coil form, so that a hollow metal nano coil is produced.
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: September 29, 2020
    Assignees: MITSUBISHI HEAVY INDUSTRIES, LTD., AKITA UNIVERSITY, TSUCHIYA CO., LTD.
    Inventors: Mikio Muraoka, Nobuyuki Kamihara, Naomoto Ishikawa, Toshiyuki Takayanagi, Hideki Horizono, Hiroaki Hayashi, Osamu Yoshida, Kotaro Tsuji
  • Patent number: 10647892
    Abstract: Provided is an adhesive that can provide quick bonding between thermoplastic resins and excellent bond strength, a structure having adhesion provided by the adhesive, and an adhesion method using the adhesive. The adhesive bonds a first member (11) containing a thermoplastic resin or a carbon fiber reinforced thermoplastic resin and a second member (12) containing the thermoplastic resin or the carbon fiber reinforced thermoplastic resin. The adhesive includes a thermoplastic resin as a main component containing a metal nano material that absorbs electromagnetic waves and generates heat.
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: May 12, 2020
    Assignees: MITSUBISHI HEAVY INDUSTRIES, LTD., AKITA UNIVERSITY, TSUCHIYA CO., LTD.
    Inventors: Toshiyuki Takayanagi, Naomoto Ishikawa, Hideki Horizono, Nobuyuki Kamihara, Mikio Muraoka, Hiroaki Hayashi, Osamu Yoshida, Kotaro Tsuji
  • Patent number: 10377881
    Abstract: The invention provides a composition capable of providing a molded article that has excellent heat resistance and a small weight change against both fluorine plasma exposure and oxygen plasma exposure during a semiconductor manufacturing step. The composition contains a fluorine-containing polymer and a cage silsesquioxane having a specific structure.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: August 13, 2019
    Assignees: Akita University, DAIKIN INDUSTRIES, LTD.
    Inventors: Kazuya Matsumoto, Mitsutoshi Jikei, Kunio Nishi, Tsuyoshi Noguchi, Fumihiro Kamiya
  • Publication number: 20190169415
    Abstract: The invention provides a composition capable of providing a molded article that has excellent heat resistance and a small weight change against oxygen plasma exposure and fluorine plasma exposure during a semiconductor manufacturing step. The composition contains a fluorine-containing polymer and a hyperbranched polymer of a cage silsesquioxane with a specific structure.
    Type: Application
    Filed: August 8, 2017
    Publication date: June 6, 2019
    Applicants: AKITA UNIVERSITY, DAIKIN INDUSTRIES, LTD.
    Inventors: Kazuya MATSUMOTO, Mitsutoshi JIKEI, Sumito YAMAKAWA, Tadatake SAKURADA, Fumihiro KAMIYA, Tsuyoshi NOGUCHI
  • Publication number: 20180295818
    Abstract: It is an object of the present invention to provide a transgenic non-human animal, which can appropriately evaluate properties, pharmacological effects and safety of a molecular targeted substance or targeted drug to a human specific molecule, and to provide a method for producing the transgenic non-human animal, which comprises a gene encoding a human specific molecule and a gene encoding a human Fc? receptor family, both genes being introduced in the animal, thereby expressing the gene encoding a human specific molecule and the gene encoding a human Fc? receptor family.
    Type: Application
    Filed: April 28, 2016
    Publication date: October 18, 2018
    Applicants: Institute of Immunology Co., Ltd., Akita University
    Inventors: Akira SHIOTA, Tatsuya MIZOROKI, Yuki MORITOKI
  • Patent number: 10046220
    Abstract: A swing analysis device for analyzing a swing of a ball hitting tool includes: an information input unit configured to receive input of acceleration information and angular velocity information detected by a sensor attached to the ball hitting tool; a posture calculation unit configured to calculate posture information of the ball hitting tool in the swing by applying a predetermined filter to the acceleration information and the angular velocity information; a correction unit configured to correct the posture information of the ball hitting tool in the swing based on the posture information of the ball hitting tool at a first time in the swing; and a swing information calculation unit configured to calculate a swing trajectory of the ball hitting tool based on the acceleration information and the posture information of the ball hitting tool corrected by the correction unit.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: August 14, 2018
    Assignees: MIZUNO CORPORATION, AKITA UNIVERSITY
    Inventors: Shohei Shibata, Takeshi Naruo, Kiyoshi Hirose
  • Patent number: 9920376
    Abstract: The objective of the present invention is to provide a method and a means of rapidly and reliably detecting lymph node metastasis in cancer or the risk of lymph node metastasis. Specifically, the present invention provides a method and a rapid determination kit for detecting lymph node metastasis in cancer or its risk by identifying a certain genetic polymorphism of the human CRP gene, and it is clinically significant in determining the treatment strategy, because effective prediction/determination can be made regarding lymph node metastasis, which is an important phenomenon in cancer progression.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: March 20, 2018
    Assignees: National University Corporation Akita University, ARKAY, Inc.
    Inventors: Satoru Motoyama, Masatomo Miura, Junichi Ogawa
  • Publication number: 20180030246
    Abstract: The invention provides a composition capable of providing a molded article that has excellent heat resistance and a small weight change against both fluorine plasma exposure and oxygen plasma exposure during a semiconductor manufacturing step. The composition contains a fluorine-containing polymer and a cage silsesquioxane having a specific structure.
    Type: Application
    Filed: February 17, 2016
    Publication date: February 1, 2018
    Applicants: AKITA UNIVERSITY, DAIKIN INDUSTRIES, LTD.
    Inventors: Kazuya MATSUMOTO, Mitsutoshi JIKEI, Kunio NISHI, Tsuyoshi NOGUCHI, Fumihiro KAMIYA
  • Patent number: 9835619
    Abstract: Acceleration and automation of immunohistochemical staining are achieved as follows: an automatic electric field immunohistochemical staining apparatus is configured to provided with a sample mounting unit, a solution supply unit, an electric field stifling unit, and a washing unit; the sample mounting unit on which a glass substrate with a tissue specimen fixed thereto is mounted and the electric field stirring unit that includes an upper electrode are operated in coordination to activate an antigen in the tissue specimen; the sample mounting unit and the solution supply unit containing various solutions are operated in coordination to supply a primary-antibody-containing solution to the tissue specimen; the sample mounting unit and the electric field stirring unit are operated in coordination to perform an antigen-antibody reaction of the antigen in the tissue specimen and a primary antibody; and the electric field stirring unit and the washing unit are operated in coordination.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: December 5, 2017
    Assignees: Governor of Akita Prefecture, Akita University
    Inventors: Yoichi Akagami, Masami Kagaya, Ryuta Nakamura, Hiroshi Ikeda, Yoshihiro Minamiya, Hiroshi Nanjo
  • Patent number: 9482692
    Abstract: A magnetic field measuring device including: a vibrational probe unit having a probe that includes one or more material(s) whose intensity of magnetization is proportionate to an external magnetic field, a mechanical vibration source for the probe; a vibration detector detecting a vibration frequency and amplitude of the probe; an alternating-current magnetic field generator applying to the probe an alternating-current magnetic field; a direct-current external magnetic field generator applying a direct-current external magnetic field to the probe; a frequency modulation detector detecting frequency modulation occurring to the mechanical vibration of the probe; a direct-current external magnetic field controller adjusting the intensity of the direct-current external magnetic field applied to the probe; and a direct-current magnetic field determination unit determining a value of the direct-current magnetic field originating from a specimen.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: November 1, 2016
    Assignees: AKITA UNIVERSITY, OSAKA UNIVERSITY
    Inventors: Hitoshi Saito, Satoru Yoshimura, Yukinori Kinoshita, Hikaru Nomura, Ryoichi Nakatani
  • Publication number: 20160228158
    Abstract: A spine immobilization tool that can control the movement of the spine with improved safety as a spine immobilization tool that includes a first covering portion, a second covering portion, and a joint portion. The first covering portion covers at least a part of a vertebral arch of a vertebra at a head-side among the adjacent vertebrae, and thus can be fixed to the vertebra. The second covering portion covers at least a part of a vertebral arch of a vertebra at a buttock side amongst the adjacent vertebrae, and thus can be fixed to the vertebra. The joint portion couples the first covering portion and the second covering portion together while allowing changing relative positions of the first covering portion and the second covering portion.
    Type: Application
    Filed: April 14, 2016
    Publication date: August 11, 2016
    Applicant: AKITA UNIVERSITY
    Inventor: Taku SUGAWARA
  • Patent number: 9279523
    Abstract: A drainpipe comprising a concentrating flow path to concentrate flow of fluid on an inner wall of the pipe, which makes it possible to inhibit freezing of the fluid hydrodynamically without providing heat energy from outside, to thereby prevent blockage of the pipe.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: March 8, 2016
    Assignees: YOSHIDA ANNY CO. LTD., AKITA UNIVERSITY
    Inventors: Yoshimi Komatsu, Yoshihiro Yoshida
  • Patent number: 9222914
    Abstract: A magnetic profile measuring device which scans a space where an alternating-current magnetic field exists by a magnetized probe on a tip of a driven cantilever, detects vibration of the cantilever, and generates an image of magnetic field distribution of the space, the device including: the cantilever having the probe equipped on the tip thereof; a driver driving the cantilever; a vibration sensor detecting vibration of the probe wherein the driven vibration of the cantilever is frequency-modulated by the alternating-current magnetic field; a demodulator demodulating from a detection signal of the vibration sensor a magnetic signal corresponding to an alternating-current magnetic field; a scanning mechanism; a data storage storing an initial data for each coordinate of the space; a modified data generator recalling the initial data from the data storage and generating a plurality of data by modifying the phase of the initial data; and an image display device.
    Type: Grant
    Filed: September 25, 2012
    Date of Patent: December 29, 2015
    Assignee: AKITA UNIVERSITY
    Inventors: Hitoshi Saito, Satoru Yoshimura