Patents Assigned to Waseda University
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Patent number: 8748166Abstract: A system (10) for forming and maintaining a biological tissue by which a biological tissue can be artificially formed by culturing cells, which comprises a pulse pump (12), a circulation pathway (13) having such a circuit structure as allowing a liquid cell culture medium discharged from the pulse pump (12) to return into the pulse pump (12), and a cell culture section (14A) and a gas exchange section (14B) provided along the circulation pathway (13). The cell culture section (14A) holds a cell holder (H) in such a manner to form a first channel wherein the liquid cell culture medium flowing in the circulation pathway (13) passes through the cell holder (H) and returns into the circulation pathway (13) and a second channel wherein the liquid cell culture medium flowing in the circulation pathway (13) passes outside the cell holder (H) and returns into the circulation pathway thereby bringing about a difference in pressure between the liquid cell culture medium passing through the respective channels.Type: GrantFiled: October 10, 2008Date of Patent: June 10, 2014Assignee: Waseda UniversityInventors: Kiyotaka Iwasaki, Mitsuo Umezu, Koji Kojima, Charles Alfred Vacanti
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Patent number: 8747553Abstract: A method of growing a p-type thin film of ?-Ga2O3 includes preparing a substrate including a ?-Ga2O3 single crystal, and growing a p-type thin film of ?-Ga2O3 on the substrate. The p-type thin film is grown in a manner that Ga in the thin film is replaced by a p-type dopant selected from H, Li, Na, K, Rb, Cs, Fr, Be, Mg, Ca, Sr, Ba, Ra, Mn, Fe, Co, Ni, Pd, Cu, Ag, Au, Zn, Cd, Hg, Tl, and Pb.Type: GrantFiled: August 13, 2012Date of Patent: June 10, 2014Assignee: Waseda UniversityInventors: Noboru Ichinose, Kiyoshi Shimamura, Kazuo Aoki, Encarnacion Antonia Garcia Villora
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Patent number: 8729532Abstract: The present invention provides a light-absorbing material capable of providing high photoelectric conversion efficiency when applied to a photoelectric conversion element. The light-absorbing material of the present invention has a structure represented by Formula (1) below: X—Y??(1) (wherein X represents a light-absorbing site, and Y represents a radical site that becomes a radical when in an oxidized state and/or when in a reduced state, and is capable of repeated oxidation-reduction).Type: GrantFiled: May 21, 2010Date of Patent: May 20, 2014Assignees: Panasonic Corporation, Waseda UniversityInventors: Takashi Sekiguchi, Hiroyuki Nishide, Michio Suzuka, Takeyuki Yamaki, Kenichi Oyaizu, Fumiaki Kato, Satoko Kambe
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Patent number: 8722909Abstract: The object is to develop an antiprotozoal remedy having a novel mechanism of action. Provided is a compound represented by a chemical formula (1), a prodrug or a pharmaceutically acceptable salt thereof, wherein within the formula (1), R1 represents R10— of formula (4) or R20— of formula (5); R2 represents CHO—, etc.; R3 represents a hydrogen atom, CH3—C(?O)—, etc.; R4 represents a hydrogen atom, CH3—C(?O)—, etc.; each of R11 and R12 independently represents a hydrogen atom, a methyl group, etc.; R13 represents —CH2—, —CH(—OH)— or —C(?O)—; each of R21 and R22 independently represents a hydrogen atom, a methyl group, etc.; R23 represents —CH2—, —CH(—OH)— or —C(?0)—; and R24 represents a hydrogen atom, a hydroxyl group, a methyl group, etc.Type: GrantFiled: March 10, 2011Date of Patent: May 13, 2014Assignee: Waseda UniversityInventors: Yoichi Nakao, Shintaro Ishigami, Yasuyuki Goto, Shin-ichiro Kawazu, Noboru Inoue
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Publication number: 20140124757Abstract: To provide a photoelectric element A including a first electrode 2, a second electrode 3 arranged opposite to the first electrode 2, an electron transport layer 1 provided on a face of the first electrode 2, the face being opposite to the second electrode 3, a photosensitizer 5 supported on the electron transport layer 1, and a hole transport layer 4 interposed between the first electrode 2 and the second electrode 3. The electron transport layer 1 includes a filled part 8 containing an organic molecule.Type: ApplicationFiled: December 12, 2012Publication date: May 8, 2014Applicants: WASEDA UNIVERSITY, Panasonic CorporationInventors: Takashi Sekiguchi, Michio Suzuka, Naoki Hayashi, Takeyuki Yamaki, Hiroyuki Nishide, Kenichi Oyaizu, Fumiaki Kato, Naoki Sano
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Patent number: 8698392Abstract: This invention provides an organic electroluminescent element comprising two opposed electrodes connected to an external circuit for applying electrical energy, at least one of the electrodes being transparent or semitransparent, and provided between the electrodes, a plurality of luminescent units, for emitting light through recombination of holes with electrons, each comprising one or more organic layers, one of the organic layers being a luminescent layer, and a charge generation layer held between two of the plurality of luminescent units, characterized in that each two adjacent luminescent units in the plurality of luminescent units are partitioned by the charge generation layer, the charge generation layer comprises at least one metal or its compound (A) having a work function of not more than 3.0 eV and at least one compound (B) having a work function of not less than 4.0 eV, and in at least one of the plurality of luminescent units, the luminescent layer contains a polymeric luminescent material.Type: GrantFiled: February 6, 2007Date of Patent: April 15, 2014Assignees: Sumitomo Chemical Company, Limited, Waseda UniversityInventors: Yukio Furukawa, Teppei Yamada, Yoshinobu Ono
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Patent number: 8672792Abstract: A first rotary shaft and a second rotary are rotatable around a rotation axis. The second rotary shaft has a cylindrical supporting part that covers an end section of the first rotary shaft. A case supports the first and second rotary shafts. A first rolling bearing is disposed between the first rotary shaft and the case and rotatably supports the first rotary shaft. A second rolling bearing is disposed between the supporting part and the first rotary shaft and supports the first rotary shaft and the second rotary shaft such that they are rotatable relative to each other. A transmission part of the second rotary shaft transmits to the second rolling bearing a preload force that pushes the second rotary shaft to the first rotary shaft side. A load-receiving part of the case receives the preload force transmitted from the second rolling bearing to the first rolling bearing.Type: GrantFiled: October 6, 2009Date of Patent: March 18, 2014Assignees: Mitsubishi Heavy Industries, Ltd., Waseda UniversityInventors: Yasuyoshi Tozaki, Takeshi Yoshimi, Hiroyuki Sonobe, Isamu Shiotsu, Susumu Matsumoto
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Patent number: 8674215Abstract: This invention aims to provide a photpelectrical device with a superior conversion efficiency, which comprises an electron transport layer giving a superior electron-transporting performance and a sufficiently large dimentional interface. The photoelectric device further comprises a pair of electrode and a hole transport layer with the electron transport layer and the hole transport layer being interposed between electrodes. The electron transport layer is made of an organic compound having a redox moiety capable of being oxidized and reduced repeatedly. The organic compound is included in a gel layer containing an electrolyte solution which stabilizes a reduction state of the redox moiety.Type: GrantFiled: July 31, 2009Date of Patent: March 18, 2014Assignees: Panasonic Corporation, Waseda UniversityInventors: Takashi Sekiguchi, Hiroyuki Nishide, Kenichi Oyaizu, Fumiaki Kato, Akira Takahashi, Takeyuki Yamaki, Mitsuo Yaguchi, Michio Suzuka, Satoko Kambe
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Publication number: 20140061532Abstract: The present invention provides a radical composition capable of suppressing elution of electrode components in an electrolyte solution when used in an electrode for a secondary battery, and a battery using the radical composition. The present invention relates to a radical composition including a pyrroline nitroxide polymer and polyethylene glycols.Type: ApplicationFiled: March 23, 2012Publication date: March 6, 2014Applicants: WASEDA UNIVERSITY, NEC CORPORATION, SUMITOMO SEIKA CHEMICALS CO., LTD.Inventors: Hiroyuki Nishide, Kenichi Oyaizu, Sosuke Yamaguchi, Nobutaka Fujimoto, Yuji Kinpara, Shun Hashimoto, Shigeyuki Iwasa, Kentaro Nakahara
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Publication number: 20140058503Abstract: An artificial mitral valve has a ring, an anterior cusp-side region, a posterior cusp-side region and a valve leaflet connected along an outer edge of the ring. The valve leaflet includes an anterior cusp forming member connected to the anterior cusp-side region and a posterior cusp forming member connected to the posterior cusp-side region. The anterior cusp forming member is provided with has an upper edge joined to the ring and a lower edge that forms a bifurcated portion. The upper edge is made up of a pair of right and left edges that incline inward and upward from the right and left sides, and a curved edge interposed between the inclined edges that curves along the anterior cusp-side region. The posterior cusp forming member has an upper edge joined to the ring and a lower edge that forms a bifurcated portion.Type: ApplicationFiled: October 31, 2013Publication date: February 27, 2014Applicant: WASEDA UNIVERSITYInventors: Mitsuo Umezu, Hitoshi Kasegawa
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Patent number: 8647613Abstract: The present invention has an object of providing a drug carrier capable of controlling in vivo pharmacokinetics. The present invention is directed to a drug carrier comprising a molecular assembly having a drug incorporated therein, and the above object can be achieved by a part of the amphiphilic molecules included in the molecular assembly being released from the molecular assembly by an external environmental change. The present invention utilizes a phenomenon that the hydrophilic-hydrophobic balance of the amphiphilic molecules is shifted toward hydrophilicity by an external environmental change and thus the amphiphilic molecules are freed from the molecular assembly.Type: GrantFiled: March 10, 2006Date of Patent: February 11, 2014Assignees: JCR Pharmaceuticals Co., Ltd., Waseda UniversityInventors: Shinji Takeoka, Yosuke Okamura, Hideo Kanazawa, Shuji Hisamoto, Kohei Kubota, Yosuke Obata
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Publication number: 20140038036Abstract: In a secondary battery utilizing redox by a radical site, charge-discharge is carried out in such a manner that a lithium ion moves between a positive electrode and a negative electrode (rocking chair-type). An anion in an amount necessary for electrode doping during charge-discharge is made unnecessary, thereby reducing the amount of an electrolytic solution. A secondary battery with a large energy density is achieved. Provided is an electrode active material including at least one polymer including a radical site capable of being converted into a first cation, and an anion site capable of being bonded with the first cation or a second cation.Type: ApplicationFiled: January 23, 2012Publication date: February 6, 2014Applicants: WASEDA UNIVERSITY, NEC CORPORATIONInventors: Hiroyuki Nishide, Kenichi Oyaizu, Hiroki Yakushiji, Shigeyuki Iwasa, Kentaro Nakahara
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Publication number: 20140039236Abstract: A hydrotalcite-like substance capable of ion exchange with target anions, being of small crystal size that exhibits large basal spacing and excels at anion exchange performance; a process for producing the same; and a method of immobilizing hazardous substances. The hydrotalcite-like substance is produced by mixing an acidic solution containing aluminum and magnesium ions with an alkaline solution containing an alkali to synthesize a hydrotalcite-like substance, followed by, without ageing, water removal or neutralization. The molar ratio of aluminum ions and magnesium ions is preferably in the range of 1:5 to 1:2. Hazardous substances can be immobilized by pulverizing the hydrotalcite-like substance after synthesis and adding the powder to a subject, or adding a hydrotalcite-like substance in slurry form to a subject, or carrying out addition so as to cause the synthesis directly at the position of the subject.Type: ApplicationFiled: October 11, 2013Publication date: February 6, 2014Applicants: JDC Corporation, Waseda UniversityInventors: Atsushi YAMAZAKI, Mai Takahashi
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Publication number: 20140039072Abstract: Provided is a method for producing vesicles which comprise a lipid as a main component and which encapsulate a functional substance therein. The method includes the steps of (a) putting the functional substance, lipid and water in a cylindrical container; and (b) producing the vesicles encapsulating the functional substance in lipid vesicles which comprise the lipid as a major component and which encapsulate the functional substance therein, by kneading the contents of the container with simultaneous rotational movement of the container around its center axis together with revolutionary movement of the container about a predetermined axis of revolution.Type: ApplicationFiled: April 4, 2012Publication date: February 6, 2014Applicant: WASEDA UNIVERSITYInventor: Hiromi Sakai
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Publication number: 20140031710Abstract: An apparatus for determining sleep apnea includes: an expiratory gas collector which is configured to collect an expiratory gas of a subject; an analyzer which is configured to analyze a constituent and a concentration of the constituent in the collected expiratory gas; and a determiner which is configured to determine whether the subject is in sleep apnea or not, based on a concentration of at least VOC in the analyzed expiratory gas.Type: ApplicationFiled: March 7, 2013Publication date: January 30, 2014Applicants: NIHON KOHDEN CORPORATION, TOKAI UNIVERSITY EDUCATIONAL SYSTEM, WASEDA UNIVERSITYInventors: Muneshige KURAHASHI, Naofumi Kobayashi, Sunao Takeda, Takashi Nagaoka, Tadashi Abe, Tetsuya Urano, Takuya Aoki, Chizuko Tsuji
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Patent number: 8636520Abstract: Disclosed is a method whereby a narrowed part similar to an actual lesioned blood vessel can be easily obtained. A mold (10) comprises first and second molded members (16, 17) having inner spaces (29, 40, 57) passing through in the axial direction and an axial member (18) detachably inserted through the individual inner spaces (29, 40, 57) of the individual molded members (16, 17). The molded members (16, 17) have tapered front parts (27, 27) respectively. In the state of facing the front ends (20) of the tapered front parts (27) to each other and thus forming a concave (12), the axial member (18) is attached. A first material (75) made of a mixed material comprising calcium carbonate or the like and silicone or the like is applied to the concave (12). A second material (76) such as silicone is applied to the entire outer periphery of the mold (10). After hardening the materials (75, 76), the mold (10) is withdrawn by detaching the axial member (18) and dividing the concave (12).Type: GrantFiled: January 28, 2009Date of Patent: January 28, 2014Assignee: Waseda UniversityInventors: Kiyotaka Iwasaki, Mitsuo Umezu, Takashi Tanaka
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Patent number: 8625851Abstract: It is an object to measure a position of a feature around a road. An image memory unit stores images in which neighborhood of the road is captured. Further, a three-dimensional point cloud model memory unit 709 stores a point cloud showing three-dimensional coordinates obtained by laser measurement which is carried out simultaneously to the image-capturing of the images as a road surface shape model. Using an image point inputting unit 342, a pixel on a feature of a measurement target is specified by a user as a measurement image point. A neighborhood extracting unit 171 extracts a point which is located adjacent to the measurement image point and superimposed on the feature for the measurement target from the point cloud. A feature position calculating unit 174 outputs three-dimensional coordinates shown by the extracted point as three-dimensional coordinates of the feature for the measurement target.Type: GrantFiled: July 12, 2012Date of Patent: January 7, 2014Assignees: Mitsubishi Electric Corporation, Waseda UniversityInventors: Junichi Takiguchi, Naoyuki Kajiwara, Yoshihiro Shima, Ryujiro Kurosaki, Takumi Hashizume
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Patent number: 8603162Abstract: An artificial mitral valve has a ring, an anterior cusp-side region, a posterior cusp-side region and a valve leaflet connected along an outer edge of the ring. The valve leaflet includes an anterior cusp forming member connected to the anterior cusp-side region and a posterior cusp forming member connected to the posterior cusp-side region. The anterior cusp forming member has an upper edge joined to the ring and a lower edge that forms a bifurcated portion. The upper edge is made up of a pair of right and left edges that incline inward and upward from the right and left sides, and a curved edge interposed between the inclined edges that curves along the anterior cusp-side region. The posterior cusp forming member has an upper edge joined to the ring and a lower edge that forms a bifurcated portion.Type: GrantFiled: July 6, 2011Date of Patent: December 10, 2013Assignee: Waseda UniversityInventors: Mitsuo Umezu, Hitoshi Kasegawa
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Patent number: 8592807Abstract: Disclosed is a photoelectric element having an excellent conversion efficiency and provided with a hole transporting layer that is endowed with excellent hole transporting properties and a sufficiently large reaction interface. The photoelectric element of the invention has a pair of electrodes, an electron transporting layer and a hole transporting layer which are disposed between the electrodes, and an electrolyte solution. The hole transporting layer includes a first organic compound having a redox moiety capable of repeated oxidation and reduction. The electrolyte solution stabilizes a reduced state of the redox moiety. The organic compound and the electrolyte solution together form a first gel layer.Type: GrantFiled: July 29, 2010Date of Patent: November 26, 2013Assignees: Panasonic Corporation, Waseda UniversityInventors: Takashi Sekiguchi, Mitsuo Yaguchi, Takeyuki Yamaki, Hiroyuki Nishide, Kenichi Oyaizu, Fumiaki Kato, Michio Suzuka, Satoko Kambe
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Publication number: 20130306954Abstract: Provided is a photoelectric element that includes an electron transport layer having excellent electron transport properties and a sufficiently large reaction interface and has low resistance loss and excellent conversion efficiency between light and electricity. The photoelectric element includes a first electrode 3, a second electrode 4, an electron transport layer 1 and a hole transport layer 5 interposed between the first electrode 3 and the second electrode 4, an electrolyte solution, and a sensitizing dye. The electron transport layer 1 includes an organic compound having an oxidation-reduction site capable of repeated oxidation-reduction. The electrolyte solution serves to stabilize a reduction state of the oxidation-reduction site. The organic compound and the electrolyte solution form a gel layer 2. The sensitizing dye is provided in contact with the electron transport layer 1.Type: ApplicationFiled: March 5, 2012Publication date: November 21, 2013Applicants: WASEDA UNIVERSITY, PANASONIC CORPORATIONInventors: Naoki Hayashi, Michio Suzuka, Takashi Sekiguchi, Takeyuki Yamaki, Hiroyuki Nishide, Kenichi Oyaizu, Fumiaki Kato, Naoki Sano