Patents by Inventor Naoko Iwata
Naoko Iwata has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8702040Abstract: An artificial satellite system includes at least two panel type artificial satellites closely connected with a plurality kind of multi networks and the minimum necessary essential tools for one artificial satellite installed on a substrate of each panel type artificial satellite, wherein the multi networks are formed by a communicating network for communicating data among data processing tools installed on each of the panel type artificial satellites, a heat pipe for providing thermal energy among tools installed on each of the panel type artificial satellites and a battery supplying line for connecting battery controlling devices installed in the each panel type artificial satellite so that the artificial satellite system can maintain higher and various controlling performance with a back-up effect of the multi network in the case that any function tool is damaged in one of the panel type artificial satellite.Type: GrantFiled: April 28, 2011Date of Patent: April 22, 2014Assignees: Japan Aerospace Exploration Agency, Mitsubishi Heavy Industries, Ltd.Inventors: Tadayuki Takahashi, Takeshi Takashima, Hiroyuki Ogawa, Shin-ichiro Sakai, Naoko Iwata, Yoshikatsu Kuroda, Kazunori Masukawa
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Patent number: 8455384Abstract: According to the present invention, the catalyst performance of a chelate catalyst comprising a complex of a macrocyclic compound such as a porphyrin derivative is improved. Also, the following method is provided: a method for preparing a fuel cell electrode catalyst comprising a nitrogen-containing metal complex in which a metallic element is coordinated with a macrocyclic organic compound, such method comprising the steps of: adding tin oxalate to the nitrogen-containing metal complex; and baking a mixture of the nitrogen-containing metal complex and tin oxalate in an inert gas atmosphere, wherein elution of metal tin is carried out via acid treatment.Type: GrantFiled: July 29, 2008Date of Patent: June 4, 2013Assignees: Toyota Jidosha Kabushiki Kaisha, Helmholtz-Zentrum Berlin Fuer Materialien und Energie GmbHInventors: Naoko Iwata, Hiroaki Takahashi, Peter Bogdanoff, Sebastian Fiechter, Iris Herrmann-Geppert, Ulrike Kramm
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Patent number: 8114803Abstract: This invention provides a catalyst material comprising a conductive material coated with a polynuclear complex molecule derived from at least two types of heteromonocyclic compounds and a catalyst metal coordinated to the coating layer of the polynuclear complex molecule, and a catalyst material comprising a conductive material coated with a polynuclear complex molecule derived from a heteromonocyclic compound and a catalyst metal, which is a composite of a noble metal and a transition metal, coordinated to the coating layer of the polynuclear complex molecule. Such catalyst material of the invention has excellent catalytic performance and serviceability as, for example, an electrode of fuel cells.Type: GrantFiled: February 3, 2006Date of Patent: February 14, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventors: Makoto Yuasa, Kenichi Oyaizu, Aritomo Yamaguchi, Hiroshi Ikkanda, Ken Tanaka, Yuichi Iai, Masakuni Yamamoto, Shigeru Kido, Hidetaka Nishikoori, Tetsuo Nagami, Naoko Iwata
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Publication number: 20110278399Abstract: An artificial satellite system 200 comprises at least two panel type artificial satellites 100 closely connected with a plurality kind of multi networks and the minimum necessary essential tools for one artificial satellite installed on a substrate of each panel type artificial satellites 100, wherein the multi networks are formed by a communicating network for communicating data among data processing tools installed on each the panel type artificial satellites 100, a heat pipe for providing thermal energy among tools installed on each the panel type artificial satellites 100 and a battery supplying line for connecting battery controlling devices installed in the each panel type artificial satellite so that the artificial satellite system 200 can maintain higher and various controlling performance with a back-up effect of the multi network in the case that any function tool is damaged in one of the panel type artificial satellite 100.Type: ApplicationFiled: April 28, 2011Publication date: November 17, 2011Inventors: Tadayuki TAKAHASHI, Takeshi Takashima, Hiroyuki Ogawa, Shin-ichiro Sakai, Naoko Iwata, Yoshikatsu Kuroda, Kazunori Masukawa
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Publication number: 20110130270Abstract: According to the present invention, the catalyst performance of a chelate catalyst comprising a complex of a macrocyclic compound such as a porphyrin derivative is improved. Also, the following method is provided: a method for preparing a fuel cell electrode catalyst comprising a nitrogen-containing metal complex in which a metallic element is coordinated with a macrocyclic organic compound, such method comprising the steps of: adding tin oxalate to the nitrogen-containing metal complex; and baking a mixture of the nitrogen-containing metal complex and tin oxalate in an inert gas atmosphere, wherein elution of metal tin is carried out via acid treatment.Type: ApplicationFiled: July 29, 2008Publication date: June 2, 2011Inventors: Naoko Iwata, Hiroaki Takahashi, Peter Bogdanoff, Sebastian Fiechter, Iris Herrmann-Geppert, Ulrike Kramm
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Publication number: 20100015506Abstract: A catalyst material that bears active species densely, thereby having higher catalytic performance and serviceability, for example, as an electrode for fuel cells. A catalyst material, wherein a conductive material whose surface physically adsorbs a polymerizable ligand having an electrochemically polymerizable heterocycle and an electron-withdrawing group bonded to the heterocycle or is coated with polynuclear complex molecules formed by electrochemical polymerization of the polymerizable ligand having an electrochemically polymerizable heterocycle and an electron-withdrawing group bonded to the heterocycle. A catalytic metal is coordinated to the adsorption layer of the polymerizable ligand having an electrochemically polymerizable heterocycle and an electron-withdrawing group bonded to the heterocycle, or to the coating layer of the polynuclear complex molecules.Type: ApplicationFiled: January 22, 2008Publication date: January 21, 2010Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Naoko Iwata, Makoto Yuasa, Kenichi Oyaizu, Ken Tanaka, Yuichi Iai, Masakuni Yamamoto, Shinichi Sasaki, Shigeru Kido
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Publication number: 20090246601Abstract: The present invention is intended to provide a catalyst material that supports active species densely, thereby having higher catalytic performance and serviceability as, for example, an electrode for fuel cells. To achieve the above object, the present invention provides a process for preparing a catalyst material, including: an electrochemical polymerization step of electrochemically polymerizing a heteromonocyclic compound so that the surface of a conductive material is coated with polynuclear complex molecules derived from the heteromonocyclic compound; and a metallation step of coordinating a catalytic metal to the coating layer of the polynuclear complex molecules, characterized in that the potential applied in the electrochemical polymerization is 0.8 to 1.5 V.Type: ApplicationFiled: March 9, 2007Publication date: October 1, 2009Inventors: Naoko Iwata, Makoto Yuasa, Kenichi Oyaizu, Ken Tanaka, Yuichi Iai, Masakuni Yamamoto, Shinichi Sasaki, Shigeru Kido
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Publication number: 20090048096Abstract: This invention provides a macrocyclic-organic-compound-based catalyst for reducing oxygen having high oxygen-reducing activity. This oxygen-reducing catalyst comprises a conductive support and, supported thereon, a porphyrin complex represented by formula (I): wherein Rs each independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a halogen atom, an amino group, a hydroxyl group, a nitro group, a phenyl group, or a cyano group or adjacent Rs together form a methylene chain having 2 to 6 carbon atoms or aromatic ring; R's each independently represent a thienyl group; and M represents a metal atom selected from the group consisting of Cu, Zn, Fe, Co, Ni, Ru, Pb, Rh, Pd, Pt, Mn, Sn, Au, Mg, Cd, Al, In, Ge, Cr, and Ti, provided that M may bind to a halogen atom, an oxygen atom, —OH, a nitrogen atom, NO, or ?CO.Type: ApplicationFiled: May 10, 2006Publication date: February 19, 2009Inventors: Naoko Iwata, Tetsuo Nagami, Hidetaka Nishikoori, Makoto Yuasa, Kenichi Oyaizu, Aritomo Yamaguchi, Mizuki Kitao, Takuya Imai, Shigeru Kido
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Publication number: 20080233466Abstract: This invention provides a catalyst material comprising a conductive material coated with a polynuclear complex molecule derived from at least two types of heteromonocyclic compounds and a catalyst metal coordinated to the coating layer of the polynuclear complex molecule, and a catalyst material comprising a conductive material coated with a polynuclear complex molecule derived from a heteromonocyclic compound and a catalyst metal, which is a composite of a noble metal and a transition metal, coordinated to the coating layer of the polynuclear complex molecule. Such catalyst material of the invention has excellent catalytic performance and serviceability as, for example, an electrode of fuel cells.Type: ApplicationFiled: February 3, 2006Publication date: September 25, 2008Applicant: Toyota Jidosha Kabushiki KaishaInventors: Makoto Yuasa, Kenichi Oyaizu, Arimoto Yamaguchi, Hiroshi Ikkanda, Ken Tanaka, Yuichi Iai, Masakuni Yamamoto, Shigeru Kido, Hidetaka Nishikoori, Tetsuo Nagami, Naoko Iwata
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Image forming apparatus with an intermediate transfer element having a polarity controlling material
Patent number: 6122475Abstract: An image forming apparatus includes an image carrier, an intermediate transfer element to transfer a developed image, an electrode to apply a bias having preselected polarity to the intermediate transfer element and form an electric field. The intermediate transfer element has an adhering force acting on toner of the developed image that is greater than or equal to an adhering force acting between the toner and the image carrier, and when a frictional charging polarity of the toner which rubs against the intermediate transfer element is the same polarity as the bias applied to the intermediate transfer element from the electrode.Type: GrantFiled: February 1, 1999Date of Patent: September 19, 2000Assignee: Ricoh Company, Ltd.Inventors: Mitsuru Seto, Naoko Iwata, Naoki Sugiyama -
Patent number: 5926669Abstract: An ordinary printing mode of forming an image and a transfer adjusting mode are provided and changed over. Under a condition of setting to the transfer adjusting mode, a pattern forming unit controls an exposing unit and thereby forms a toner image of a test pattern on a circumferential surface of a photosensitive body. A transfer controlling unit changes the transfer condition for electrostatically absorbing the toner image. An electric potential measuring unit measures a surface electric potential at a specified position. A condition detecting unit detects a condition of minimizing a rate ".DELTA.Vs/.DELTA.T" of a variation .DELTA.T of the transfer condition and a variation .DELTA.Vs of the surface electric potential on the photosensitive body. A condition setting unit adjusts the transfer condition in the ordinary printing mode based on the above transfer condition, and thereby the transfer unit can be adjusted to an optimum state.Type: GrantFiled: August 5, 1997Date of Patent: July 20, 1999Assignee: Ricoh Company, Ltd.Inventors: Hiroyuki Sugimoto, Naoko Iwata
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Patent number: 5887218Abstract: An image forming apparatus in which a toner image formed on an image bearing member is first transferred onto an intermediate transfer element and then onto a transfer member. A potential of the image bearing member is detected and a transfer bias voltage applied to the intermediate transfer element is controlled according to the potential of the image bearing member. Undesired images such as transfer blurring due to discharge at the first transfer area, and a solid image scattering and so-called crow's claw mark due to increase of resistance of the transfer member under low absolute humidities are improved.Type: GrantFiled: June 10, 1997Date of Patent: March 23, 1999Assignee: Ricoh Co., Ltd.Inventors: Hideo Yuu, Mitsuru Seto, Takashi Bisaiji, Naoko Iwata