Patents Assigned to Waseda University
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Patent number: 9012901Abstract: A photoelectric conversion element having high photovoltaic conversion efficiency is provided. The photoelectric conversion element includes a first electrode, a second electrode arranged opposite to the first electrode, and an electron transport layer provided on a face of the first electrode, and the face is opposite to the second electrode. The photoelectric conversion element further includes a photosensitizer supported on the electron transport layer and a hole transport layer interposed between the first electrode and the second electrode. The electron transport layer contains a perylene imide derivative of [Chemical Formula 1].Type: GrantFiled: March 5, 2012Date of Patent: April 21, 2015Assignees: Panasonic Corporation, Waseda UniversityInventors: Michio Suzuka, Takashi Sekiguchi, Naoki Hayashi, Takeyuki Yamaki, Hiroyuki Nishide, Kenichi Oyaizu, Fumiaki Kato
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Patent number: 9013023Abstract: A photoelectric element includes a first electrode; and a second electrode positioned so as to face the first electrode; and a semiconductor disposed on a face of the first electrode, the face being positioned so as to face the second electrode; and a photosensitizer carried on the semiconductor; and a first charge-transport layer interposed between the first electrode and the second electrode; and a second charge-transport layer interposed between the first charge-transport layer and the second electrode. The first charge-transport layer and the second charge-transport layer contain different oxidation-reduction materials. The oxidation-reduction material in the first charge-transport layer has an oxidation-reduction potential higher than an oxidation-reduction potential of the oxidation-reduction material in the second charge-transport layer.Type: GrantFiled: December 18, 2012Date of Patent: April 21, 2015Assignees: Panasonic Corporation, Waseda UniversityInventors: Michio Suzuka, Takashi Sekiguchi, Naoki Hayashi, Hiroyuki Nishide, Kenichi Oyaizu, Fumiaki Kato
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Publication number: 20150064228Abstract: The present invention suppresses the strength reduction or degeneration of a tissue after the tissue is dried and/or sterilized, for the tissue comprising biological components and the like. Specifically, biological tissue is immersed in a trehalose solution and shaken, thereby impregnating the biological tissue with the trehalose solution. The trehalose solution used here is one obtained by dissolving trehalose in a phosphate buffered saline, the concentration of trehalose being preferably in the range of 20 wt % to 35 wt %. Thereafter, the biological tissue is dried to remove moisture in the biological tissue, and sterilized with ethylene oxide gas.Type: ApplicationFiled: April 1, 2013Publication date: March 5, 2015Applicant: WASEDA UNIVERSITYInventors: Kiyotaka Iwasaki, Mitsuo Umezu
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Publication number: 20150054000Abstract: A method for treating a surface of a diamond thin film according to one aspect of the present invention performs one of a first substitution process for substituting part of hydrogen-terminals of a diamond thin film with fluorine-terminals in the absence of a fluorocarbon deposition on the surface of diamond thin film and a second substitution process for substituting part of hydrogen-terminals of a diamond thin film with fluorine-terminals in the presence of the fluorocarbon deposition on the surface of diamond thin film based on required surface properties of the diamond thin film.Type: ApplicationFiled: August 25, 2014Publication date: February 26, 2015Applicants: WASEDA UNIVERSITY, YOKOGAWA ELECTRIC CORPORATIONInventors: Yukihiro SHINTANI, Toshiyuki SARUYA, Hiroshi KAWARADA
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Patent number: 8952372Abstract: 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: GrantFiled: December 12, 2012Date of Patent: February 10, 2015Assignees: Panasonic Corporation, Waseda UniversityInventors: Takashi Sekiguchi, Michio Suzuka, Naoki Hayashi, Takeyuki Yamaki, Hiroyuki Nishide, Kenichi Oyaizu, Fumiaki Kato, Naoki Sano
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Patent number: 8916197Abstract: The present invention pertains to a bone marrow-directing drug delivery material that includes at least one fine particle, wherein the fine particle includes an anionic moiety on a surface of the particle. Also disclosed are uses of the material set forth herein for the prevention, treatment, or diagnosis of a disease of bone, cartilage, bone marrow, or a joint. Also disclosed are methods of preventing, treating, or diagnosing a disease of bone, cartilage, bone marrow, or a joint in a subject, involving administering to the subject a pharmaceutically effective amount of the material of the present invention.Type: GrantFiled: June 5, 2006Date of Patent: December 23, 2014Assignees: The Board of Regents of the University of Texas System, Waseda UniversityInventors: Keitaro Sou, Shinji Takeoka, Eishun Tsuchida, Beth A. Goins, William T. Phillips
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Patent number: 8899024Abstract: An engine exhaust purification device comprises: a selective reduction type NOx catalyst; an oxidation catalyst disposed on an upstream side of the NOx catalyst; a reducing agent adding device which adds an NOx reducing agent to an exhaust gas of an engine; a control device which controls the reducing agent adding device; and an NO2 ratio calculation device which estimates an NO2 ratio of the exhaust gas flowing into the NOx catalyst. The NO2 ratio of the exhaust gas flowing into the NOx catalyst is calculated by a catalytic reaction model where the oxidation reaction of NO in the oxidation catalyst is numerically formulated, and the NO2 ratio is reflected to calculate an amount of ammonia adsorbed on the NOx catalyst by a catalytic reaction model where a chemical reaction concerned with the reduction of NOx in the NOx catalyst is numerically formulated.Type: GrantFiled: September 14, 2012Date of Patent: December 2, 2014Assignees: UD Trucks Corporation, Waseda UniversityInventors: Nobuhiko Masaki, Kiminobu Hirata, Jin Kusaka, Hideaki Kato, Yasumasa Notake
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Patent number: 8900524Abstract: There is provided a novel optical sensor utilizing a surface plasmon resonance technique which is capable of detecting a substance to be detected with high sensitivity independently of a wavelength of irradiated light and is capable of obtaining information, other than a refraction index, on the substance to be detected. At the center of a surface of a metallic film 2 which is formed on a substrate and has no aperture, a circular depression 4 with a diameter of 0.1 to 250 nm is formed and with the depression 4 defined as a center, a plurality of depressions 3 are concentrically formed at intervals of 450 to 530 nm.Type: GrantFiled: March 17, 2009Date of Patent: December 2, 2014Assignee: Waseda UniversityInventors: Masahiro Yanagisawa, Takuya Nakanishi, Naonobu Shimamoto, Mikiko Saito, Tetsuya Osaka
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Patent number: 8895975Abstract: 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: GrantFiled: March 5, 2012Date of Patent: November 25, 2014Assignees: Panasonic Corporation, Waseda UniversityInventors: Naoki Hayashi, Michio Suzuka, Takashi Sekiguchi, Takeyuki Yamaki, Hiroyuki Nishide, Kenichi Oyaizu, Fumiaki Kato, Naoki Sano
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Publication number: 20140287287Abstract: A battery system 1 includes a secondary battery 10 including a positive electrode 11, a negative electrode 15, and electrolytes 12 and 14, a storing section 23 configured to store peculiar information of the secondary battery 10 measured in advance including an initial resistance value and an evaluation frequency, a power supply section 20 configured to apply an alternating current signal having the evaluation frequency stored in the storing section 23 to the secondary battery 10, a measuring section 22 configured to measure impedance of a solid electrolyte interphase 17 of the secondary battery 10 from the alternating current signal, and a calculating section 24 configured to calculate at least one of a deterioration degree and a charging depth of the secondary battery 10 from the impedance and the peculiar information.Type: ApplicationFiled: October 10, 2012Publication date: September 25, 2014Applicant: WASEDA UNIVERSITYInventors: Tetsuya Osaka, Toshiyuki Momma, Tokihiko Yokoshima, Daikichi Mukoyama, Hiroki Nara
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Publication number: 20140283791Abstract: The free-piston engine 10 includes a combustion space F for combusting an air-fuel mixture, a piston 12 capable of reciprocation between a most-compressed position and a most-expanded position, suction ports 14 for introducing outside air into the combustion space F, and exhaust ports 16 for directing the exhaust gas to the outside. The piston 12 extracts power by moving from the most-compressed position to the most-expanded position by a combustion explosive force and returns from the most-expanded position to the most-compressed position by the actuation of a piston drive device. Furthermore, the piston 12 opens the exhaust port 16 to the combustion space F when the piston 12 has reached the most-expanded position, whereas the piston 12 closes the exhaust ports 16 to the combustion space F when the piston is present in a different position.Type: ApplicationFiled: August 8, 2012Publication date: September 25, 2014Applicant: WASEDA UNIVERSITYInventor: Ken Naitoh
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Patent number: 8841550Abstract: A photoelectric element provided with an electron transport layer having excellent electron transport property and sufficiently wide reaction interface, and that has excellent conversion efficiency. The photoelectric element has an electron transport layer 3 and a hole transport layer 4 sandwiched between a pair of electrodes 2 and 5. The electron transport layer 3 is formed of an organic compound having a redox moiety capable of being oxidized and reduced repeatedly. The organic compound contains an electrolyte solution which stabilizes the reduced state of the redox moiety, and forms a gel layer 6 containing a sensitizing dye.Type: GrantFiled: June 16, 2010Date of Patent: September 23, 2014Assignees: Panasonic Corporation, Waseda UniversityInventors: Takashi Sekiguchi, Mitsuo Yaguchi, Takeyuki Yamaki, Hiroyuki Nishide, Kenichi Oyaizu, Fumiaki Kato, Michio Suzuka, Satoko Kambe
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Patent number: 8828349Abstract: A substrate for growing carbon nanotubes capable of elongating single-walled carbon nanotubes of an average diameter of less than 2 nm is provided. The substrate for growing carbon nanotubes 1 is equipped with a reaction prevention layer 3 formed on a base material 2, a catalyst material layer 4 formed on the reaction prevention layer 3, a dispersion layer 5 formed on the catalyst material layer 4, and a dispersion promotion layer 6 formed on the dispersion layer 5.Type: GrantFiled: March 7, 2012Date of Patent: September 9, 2014Assignees: Honda Motor Co., Ltd., Waseda UniversityInventors: Toshiyuki Ohashi, Toshio Tokune, Masahiro Ota, Hidefumi Nikawa, Hiroshi Kawarada, Takumi Ochiai
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Publication number: 20140239225Abstract: The present invention relates to a water-selective adsorbent and a method for producing the water-selective adsorbent. The water-selective adsorbent includes: a water-selective adsorbent main body that includes a porous body having a plurality of pores and at least one kind of deliquescent substance contained (supported) within the pores of the porous body; and a moisture-permeable film that is formed on the surface of the water-selective adsorbent main body so as to block up at least the pores. Consequently, loss (outflow) of the deliquescent substance such as lithium chloride can be suppressed even if adsorption and desorption of moisture are repeated, so that decrease in the moisture adsorption ability can be suppressed.Type: ApplicationFiled: May 2, 2014Publication date: August 28, 2014Applicants: NGK INSULATORS, LTD., WASEDA UNIVERSITYInventors: Atsushi Yamazaki, Tatsuya Hishiki
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Patent number: 8815168Abstract: A carbon nanotube synthesizing apparatus in which the state of generated plasma can be stabilized is provided. A carbon nanotube synthesizing apparatus 1 comprises a chamber 2, an antenna 3 including a tip 3a, a microwave conductor 4, a gas introducing unit 5, a gas discharging unit 6, a substrate holding unit 7, and a heating unit 8. The shape of the inner wall of the chamber 2 is symmetrical with respect to the tip 3a of the antenna 3.Type: GrantFiled: March 9, 2013Date of Patent: August 26, 2014Assignees: Honda Motor Co., Ltd., Waseda UniversityInventors: Hiroshi Kawarada, Toshiyuki Ohashi, Masahiro Ohta, Ryogo Kato, Toshio Tokune, Hidefumi Nikawa
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Publication number: 20140231724Abstract: An active material for a lithium secondary battery includes an amorphous and metastable phase which contains silicon, oxygen, and more than 30 at % and 80 at % or less of carbon.Type: ApplicationFiled: March 23, 2012Publication date: August 21, 2014Applicant: WASEDA UNIVERSITYInventors: Tetsuya Osaka, Toshiyuki Momma, Tokihiko Yokoshima, Hiroki Nara
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Patent number: 8812880Abstract: Provided is a multiprocessor system and a compiler used in the system for automatically extracting tasks having parallelism from an input program to be processed, performing scheduling to efficiently operate processor units by arranging the tasks according to characteristics of the processor units, and generating codes for optimizing a system frequency and a power supply voltage by estimating a processing amount of the processor units.Type: GrantFiled: January 11, 2010Date of Patent: August 19, 2014Assignee: Waseda UniversityInventors: Hironori Kasahara, Keiji Kimura, Jun Shirako, Masaki Ito, Hiroaki Shikano
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Patent number: 8808812Abstract: Disclosed is a method capable of accelerating the growth of oriented carbon nanotubes when manufacturing the oriented carbon nanotubes by a plasma CVD. Under the circulation of a gas which is the raw material of the carbon nanotubes, plasma is generated by an antenna (6) provided in a depressurized treatment chamber (2), and substrates (9, 15) provided with a reaction prevention layer and a catalyst material layer which are formed on a base material are held at a distance, to which a radical can reach and an attack of an ion generated as a by-product of the radical can be avoided, from a plasma generation area (7). The tip (6a) of the antenna (6) can be controlled so as to match with the position of the anti-node of a stationary wave (27) of microwaves.Type: GrantFiled: August 30, 2010Date of Patent: August 19, 2014Assignees: Honda Motor Co., Ltd., Waseda UniversityInventors: Hiroshi Kawarada, Ryogo Kato, Toshiyuki Ohashi, Toshio Tokune, Hidefumi Nikawa
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Patent number: 8784931Abstract: A method of manufacturing ULSI wiring in which wiring layers are separately formed via a diffusion prevention layer and an insulating interlayer portion made of SiO2. The method comprises the steps of treating, with a silane compound, a SiO2 surface of the insulating interlayer portion on which the diffusion layer is to be formed, performing catalyzation with an aqueous solution containing a palladium compound, forming the diffusion prevention layer by electroless plating, and then forming the wiring layer on this diffusion prevention layer. A capping layer may be formed on the wiring layer by electroless plating. Consequently, a diffusion prevention layer having good adhesive properties can be formed through a simple wet process, and, the wiring layer can directly be formed on this diffusion prevention layer by a wet process. The capping layer can also be directly formed on the wiring layer by electroless plating.Type: GrantFiled: September 23, 2009Date of Patent: July 22, 2014Assignees: Waseda University, Renesas Electronics CorporationInventors: Kazuyoshi Ueno, Tetsuya Osaka, Nao Takano
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Patent number: 8773224Abstract: A frequency multiplier includes an input circuit, an output circuit, and a resonance circuit. The input circuit is coupled to an input node and a middle node. The middle node provides a middle signal that has a signal component having the same frequency as an input signal that is provided to the input node. The middle signal further has an even number ānā multiple of the input signal frequency. The output circuit has a predetermined input impedance for the middle node. The resonance circuit includes an inductor that is coupled in series with a capacitor, where the capacitor is in a parallel connection to the middle node. The resonance circuit has a resonance frequency that is equal to a frequency of the input signal, and such resonance circuit also has an output impedance that matches with the predetermined input impedance of the output circuit.Type: GrantFiled: November 29, 2011Date of Patent: July 8, 2014Assignees: DENSO CORPORATION, Waseda UniversityInventors: Toshihiko Yoshimasu, Takayuki Shibata