Patents by Inventor Shuzo Tokumitsu
Shuzo Tokumitsu 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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Publication number: 20150021208Abstract: Provided is a measuring method for a biological substance, a measuring chip, and a measuring device which exhibit improved electrical responsiveness and reliability. For example, the device or chip provided for measuring the amount of a biological substance in a liquid being measured comprises immobilized antibodies, a substance that is labeled with an ion-conductive compound and that is bonded to the antibodies, and an electrode containing a working electrode and a counter electrode, and the working electrode has a thin film on the surface thereof that contains a hydrocarbon group.Type: ApplicationFiled: November 20, 2012Publication date: January 22, 2015Applicant: PANASONIC CORPORATIONInventors: Takaiki Nomura, Yasuyuki Nukina, Kazuhito Hato, Shuzo Tokumitsu
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Patent number: 8759560Abstract: The invention provides a surface-modified zirconia nanocrystal particle, wherein the surface of the zirconia nanoparticle is modified by organic sulfonyloxy groups, and a method of producing a zirconia nanocrystal particle whose surface is modified by carbonyloxy groups, organic phosphoryloxy groups or aryloxy groups. This makes it possible a highly stable surface-modified zirconia nanocrystal particle having a solvent dispersibility by a simple method. Further, it is possible to the surface-modified zirconia nanocrystal particle of the invention is equipped with a surface modifier having a structure that can be easily substituted with a desired functional group according to use. Furthermore, it is possible to the method of producing the surface-modified zirconia nanocrystal particle which is capable of easily producing that.Type: GrantFiled: June 14, 2010Date of Patent: June 24, 2014Assignee: Hoya CorporationInventor: Shuzo Tokumitsu
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Patent number: 8518848Abstract: A titanium oxide photocatalyst that is capable of improving a decomposition rate, and a method for producing the same are provided. The titanium oxide photocatalyst of the present invention is a titanium oxide photocatalyst containing at least an anatase-type titanium oxide and fluorine, wherein a content of the fluorine is 2.5 wt % to 3.5 wt %, and 90 wt % or more of the fluorine is chemically bonded to the anatase-type titanium oxide.Type: GrantFiled: February 29, 2012Date of Patent: August 27, 2013Assignees: Panasonic Corporation, Sakai Chemical Industry Co., Ltd.Inventors: Noboru Taniguchi, Shuzo Tokumitsu, Tomohiro Kuroha, Kenichi Tokuhiro, Akio Nakashima, Keita Kobayashi, Shinji Nakahara
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Publication number: 20130164444Abstract: A surface-modified titania particle manufacturing method is a method for manufacturing surface-modified titania particles having crystal particles of titanium dioxide and a surface modifier that coats a surface of the crystal particles, including: [1] a first step of preparing a starting solution containing a titanalkoxide compound, an alkoxysilane, an alcohol, an acid, and water; and [2] a second step of performing heating treatment on the starting solution. Furthermore, this method preferably further includes, after the second step, [3] a third step of removing a liquid phase component in the starting solution through evaporation, by reducing a pressure around the starting solution.Type: ApplicationFiled: July 22, 2011Publication date: June 27, 2013Applicant: HOYA CORPORATIONInventors: Shuzo Tokumitsu, Masako Kawakami
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Patent number: 8454807Abstract: A photoelectrochemical cell (1) is a photoelectrochemical cell for decomposing water by irradiation with light so as to produce hydrogen.Type: GrantFiled: January 28, 2011Date of Patent: June 4, 2013Assignee: Panasonic CorporationInventors: Takaiki Nomura, Takahiro Suzuki, Kenichi Tokuhiro, Tomohiro Kuroha, Noboru Taniguchi, Kazuhito Hatoh, Shuzo Tokumitsu
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Patent number: 8367050Abstract: Provided are a photocatalytic material that improves a decomposition performance and a decomposition rate, as well as a photocatalytic member and a purification device in which the photocatalytic material is used. The photocatalytic member is a photocatalytic member (1) that includes a substrate (10) and a photocatalyst layer (11) formed on a surface of the substrate (10), wherein the photocatalyst layer (11) contains a titanium oxide photocatalyst and zeolite, the titanium oxide photocatalyst containing at least an anatase-type titanium oxide and fluorine, in which a content of the fluorine in the titanium oxide photocatalyst is 2.5 wt % to 3.5 wt %, and 90 wt % or more of the fluorine is chemically bonded to the anatase-type titanium oxide.Type: GrantFiled: April 18, 2008Date of Patent: February 5, 2013Assignee: Panasonic CorporationInventors: Noboru Taniguchi, Tomohiro Kuroha, Shuzo Tokumitsu, Kenichi Tokuhiro
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Patent number: 8236146Abstract: A photoelectrochemical cell (100) includes: a semiconductor electrode (120) including a conductor (121) and an n-type semiconductor layer (122); a counter electrode (130) connected electrically to the conductor (121); an electrolyte (140) in contact with the surfaces of the n-type semiconductor layer (122) and the counter electrode (130); and a container (110) accommodating the semiconductor electrode (120), the counter electrode (130) and the electrolyte (140). The photoelectrochemical cell (100) generates hydrogen by irradiation of the n-type semiconductor layer (122) with light.Type: GrantFiled: October 29, 2009Date of Patent: August 7, 2012Assignee: Panasonic CorporationInventors: Takaiki Nomura, Takahiro Suzuki, Kenichi Tokuhiro, Tomohiro Kuroha, Noboru Taniguchi, Kazuhito Hatoh, Shuzo Tokumitsu
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Publication number: 20120157300Abstract: A titanium oxide photocatalyst that is capable of improving a decomposition rate, and a method for producing the same are provided. The titanium oxide photocatalyst of the present invention is a titanium oxide photocatalyst containing at least an anatase-type titanium oxide and fluorine, wherein a content of the fluorine is 2.5 wt % to 3.5 wt %, and 90 wt % or more of the fluorine is chemically bonded to the anatase-type titanium oxide.Type: ApplicationFiled: February 29, 2012Publication date: June 21, 2012Applicants: SAKAI CHEMICAL INDUSTRY CO., LTD., PANASONIC CORPORATIONInventors: Noboru TANIGUCHI, Shuzo TOKUMITSU, Tomohiro KUROHA, Kenichi TOKUHIRO, Akio NAKASHIMA, Keita KOBAYASHI, Shinji NAKAHARA
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Publication number: 20120117919Abstract: A novel method for storing a photocatalytic member containing fluorine-containing anatase-type titanium oxide is provided, which is capable of suppressing the decrease in content of fluorine during storage in a photocatalytic member containing fluorine-containing anatase-type titanium oxide. The storage method of the present invention is a method for storing a photocatalytic member containing fluorine-containing anatase-type titanium oxide including storing the photocatalytic member in a surrounding environment with a relative humidity of 30% or less. According to the storage method of the present invention, for example, the elimination of fluorine from the surface of fluorine-containing titanium oxide can be suppressed, and the decrease in content of fluorine during storage in a photocatalytic member can be suppressed.Type: ApplicationFiled: June 2, 2009Publication date: May 17, 2012Applicant: PANASONIC CORPORATIONInventors: Kenichi Tokuhiro, Noboru Taniguchi, Tomohiro Kuroha, Shuzo Tokumitsu, Yoshihiro Tsuji, Jun Inagaki, Masashi Nishiguchi
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Publication number: 20120080310Abstract: A photoelectrochemical cell (1) includes: an optical semiconductor electrode (first electrode) (3) including a conductive substrate (3a) and an n-type semiconductor layer (3b) as an optical semiconductor layer disposed on the conductive substrate (3a); a counter electrode (second electrode) (4) disposed to face the surface of the optical semiconductor electrode (3) on the conductive substrate (3a) side and connected electrically to the conductive substrate (3a); an electrolyte solution (11) containing water and disposed in contact with the surface of the n-type semiconductor layer (3b) and the surface of the counter electrode (4); a container (2) in which the optical semiconductor electrode (3), the counter electrode (4), and the electrolyte solution (11) are disposed; an inlet (5) for supplying water into the container; and an ion passing portion (12) that allows ions to move between the electrolyte solution in a region A on the surface side of the n-type semiconductor layer (3b) and the electrolyte solutionType: ApplicationFiled: June 1, 2010Publication date: April 5, 2012Applicant: PANASONIC CORPORATIONInventors: Takaiki Nomura, Takahiro Suzuki, Kenichi Tokuhiro, Tomohiro Kuroha, Noboru Taniguchi, Kazuhito Hatoh, Shuzo Tokumitsu
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Patent number: 8148289Abstract: A titanium oxide photocatalyst that is capable of improving a decomposition rate, and a method for producing the same are provided. The titanium oxide photocatalyst of the present invention is a titanium oxide photocatalyst containing at least an anatase-type titanium oxide and fluorine, wherein a content of the fluorine is 2.5 wt % to 3.5 wt %, and 90 wt % or more of the fluorine is chemically bonded to the anatase-type titanium oxide.Type: GrantFiled: April 18, 2008Date of Patent: April 3, 2012Assignees: Panasonic Corporation, Sakai Chemical Industry Co., Ltd.Inventors: Noboru Taniguchi, Shuzo Tokumitsu, Tomohiro Kuroha, Kenichi Tokuhiro, Akio Nakashima, Keita Kobayashi, Shinji Nakahara
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Publication number: 20120071680Abstract: The invention provides a surface-modified zirconia nanocrystal particle, wherein the surface of the zirconia nanoparticle is modified by organic sulfonyloxy groups, and a method of producing a zirconia nanocrystal particle whose surface is modified by carbonyloxy groups, organic phosphoryloxy groups or aryloxy groups. This makes it possible a highly stable surface-modified zirconia nanocrystal particle having a solvent dispersibility by a simple method. Further, it is possible to the surface-modified zirconia nanocrystal particle of the invention is equipped with a surface modifier having a structure that can be easily substituted with a desired functional group according to use. Furthermore, it is possible to the method of producing the surface-modified zirconia nanocrystal particle which is capable of easily producing that.Type: ApplicationFiled: June 14, 2010Publication date: March 22, 2012Applicant: Hoya CorporationInventor: Shuzo Tokumitsu
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Publication number: 20110315545Abstract: A hydrogen generating device (100) includes: a housing (1) that is capable of holding a liquid therein, and that is at least partially transmissive to light; an electrolyte that is held in the housing (1) and that contains water; a photoelectrode (2) that is arranged in the housing (1), that has a first surface in contact with the electrolyte, and that generates gas through decomposition of the water by being irradiated with light transmitted through the housing (1); and a conductor (3) that is arranged in a region on the second surface side opposite to the first surface side with respect to the photoelectrode (2) inside the housing (1), that has a surface in contact with the electrolyte, and that is connected electrically with the photoelectrode (2). The conductor (3) has a groove portion (3a) that is provided on the surface in contact with the electrolyte, and that extends along the flow direction of the generated gas.Type: ApplicationFiled: April 14, 2010Publication date: December 29, 2011Applicant: PANASONIC CORPORATIONInventors: Tomohiro Kuroha, Takaiki Nomura, Takahiro Suzuki, Kenichi Tokuhiro, Noboru Taniguchi, Kazuhito Hatoh, Shuzo Tokumitsu
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Publication number: 20110220837Abstract: A solvent-dispersible particle including, a nanoparticle including two or more metallic components, and surface modifiers for covering the surface of the nanoparticle. The surface modifier includes, within its one molecule, two or more functional groups interacting with the two or more metallic components in the nanoparticle, respectively, and one or more functional groups having affinity for a solvent in which the nanoparticle is dispersed.Type: ApplicationFiled: September 8, 2008Publication date: September 15, 2011Applicant: Hoya CorporationInventors: Shuzo Tokumitsu, Yuki Hirajima
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Publication number: 20110174610Abstract: A photoelectrochemical cell (1) is a photoelectrochemical cell for decomposing water by irradiation with light so as to produce hydrogen.Type: ApplicationFiled: January 28, 2011Publication date: July 21, 2011Applicant: PANASONIC CORPORATIONInventors: Takaiki NOMURA, Takahiro SUZUKI, Kenichi TOKUHIRO, Tomohiro KUROHA, Noboru TANIGUCHI, Kazuhito HATOH, Shuzo TOKUMITSU
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Publication number: 20110101263Abstract: A multi-component alloy particle containing at least two metal components and at least one surface modifier contacting the metal components where in the multi-component alloy particle atoms of the metal components are arranged in an ordered manner, and the multi-component alloy particle is ferromagnetic and disperses in a solvent. Method for making the multi-component alloy particle.Type: ApplicationFiled: October 28, 2010Publication date: May 5, 2011Applicant: HOYA CORPORATIONInventors: Shuzo Tokumitsu, Yuki Hirajima
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Publication number: 20100282601Abstract: A photoelectrochemical cell (100) includes: a semiconductor electrode (120) including a conductor (121) and an n-type semiconductor layer (122); a counter electrode (130) connected electrically to the conductor (121); an electrolyte (140) in contact with the surfaces of the n-type semiconductor layer (122) and the counter electrode (130); and a container (110) accommodating the semiconductor electrode (120), the counter electrode (130) and the electrolyte (140). The photoelectrochemical cell (100) generates hydrogen by irradiation of the n-type semiconductor layer (122) with light.Type: ApplicationFiled: October 29, 2009Publication date: November 11, 2010Applicant: PANASONIC CORPORATIONInventors: Takaiki Nomura, Takahiro Suzuki, Kenichi Tokuhiro, Tomohiro Kuroha, Noboru Taniguchi, Kazuhito Hatoh, Shuzo Tokumitsu
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Publication number: 20100273000Abstract: A metal nanoparticle including, a core portion which includes at least one metal element, and organic compounds which adsorb onto the surface of the core portion. The organic compounds have a hydrophilic portion and a hydrophobic portion within their molecules. The hydrophilic portion is forming a coordinate bond with the surface of the core portion through O atoms.Type: ApplicationFiled: October 16, 2008Publication date: October 28, 2010Applicant: HOYA CORPORATIONInventors: Shuzo Tokumitsu, Takashi Narushima
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Publication number: 20100135864Abstract: Provided are a photocatalytic material that improves a decomposition performance and a decomposition rate, as well as a photocatalytic member and a purification device in which the photocatalytic material is used. The photocatalytic member is a photocatalytic member (1) that includes a substrate (10) and a photocatalyst layer (11) formed on a surface of the substrate (10), wherein the photocatalyst layer (11) contains a titanium oxide photocatalyst and zeolite, the titanium oxide photocatalyst containing at least an anatase-type titanium oxide and fluorine, in which a content of the fluorine in the titanium oxide photocatalyst is 2.5 wt % to 3.5 wt %, and 90 wt % or more of the fluorine is chemically bonded to the anatase-type titanium oxide.Type: ApplicationFiled: April 18, 2008Publication date: June 3, 2010Applicant: PANASONIC CORPORATIONInventors: Noboru Taniguchi, Tomohiro Kuroha, Shuzo Tokumitsu, Kenichi Tokuhiro
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Publication number: 20100111817Abstract: A titanium oxide photocatalyst that is capable of improving a decomposition rate, and a method for producing the same are provided. The titanium oxide photocatalyst of the present invention is a titanium oxide photocatalyst containing at least an anatase-type titanium oxide and fluorine, wherein a content of the fluorine is 2.5 wt % to 3.5 wt %, and 90 wt % or more of the fluorine is chemically bonded to the anatase-type titanium oxide.Type: ApplicationFiled: April 18, 2008Publication date: May 6, 2010Applicants: PANASONIC CORPORATION, SAKAI CHEMICAL INDUSTRY CO., LTD.Inventors: Noboru Taniguchi, Shuzo Tokumitsu, Tomohiro Kuroha, Kenichi Tokuhiro, Akio Nakashima, Keita Kobayashi, Shinji Nakahara