Patents by Inventor Hiroshi Taoda
Hiroshi Taoda 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: 20070037722Abstract: The present invention provides a novel oxygen scavenger and a method for producing the oxygen scavenger, and relates to the oxygen scavenger comprising as an active component a hydroxide of trivalent titanium, or a hydroxide of trivalent titanium being added with water or mixed with a water-containing substance, and to a method for producing the oxygen scavenger which comprises adding water by spraying or some other method to a hydroxide of trivalent titanium, or mixing a powder such as silica or alumina immersed in water with a hydroxide of trivalent titanium, and according to the present invention, it is possible to produce and provide a novel oxygen scavenger having numerous advantages, such as that it is highly safe, does not affect metal detectors and other such devices, exhibits excellent oxygen absorption performance and high oxygen absorption rate, can be used in microwave ovens, and the expiration date thereof can be readily ascertained, and is therefore favorable for the storage of foods and a wideType: ApplicationFiled: September 10, 2004Publication date: February 15, 2007Applicant: National Instof Adv Industrial Science and Tech.Inventor: Hiroshi Taoda
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Publication number: 20060275187Abstract: The present invention provides an ultraviolet-responsive thin film photocatalyst and an application thereof. The present invention relates to a transparent thin film titanium dioxide photocatalyst wherein the crystal size of the titanium dioxide catalyst forming the thin film is 5 nm to 50 nm, the adsorption wavelength peak is in the range of 200 nm to 300 nm and the film thickness is 0.1 to 1.0 microns, to the aforementioned photocatalyst wherein the crystal form of the titanium dioxide forming the thin film is a mixed state of spindle-shaped crystals and cubic crystals, to a filter wherein inorganic paper having silicon carbide (SiC) or amorphous silica (SiO2) as a principal component or inorganic paper having activated charcoal, zeolite or sepiolite as a principal component is used as the substrate, and to an air sterile filtration device in which the aforementioned filter and a bactericidal ultraviolet lamp are combined.Type: ApplicationFiled: April 2, 2004Publication date: December 7, 2006Applicant: PHOTO-CATALYTIC MATERIALS INC.Inventors: Hiroshi Taoda, Shigekazu Kato
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Publication number: 20050004256Abstract: A dental resin material mixed with a composition containing, as a maincomponent, titanium dioxide whose surface has been partly coated with apatite. In the dental resin material, it is preferable that anatase-, rutile-, brookit-type titanium dioxide or a mixture of these components is used as the titanium dioxide. The apatite for partial coating of titanium dioxide is produced by immersing powdery titanium dioxide in a pseudo body fluid and stirring the immersed titanium dioxide approximately at the same temperature as a human body temperature, i.e., 36° C. In this instance, it is important that the apatite is deposited in the form of platy crystals of less than 2 mm in thickness to cover 0.001-10% of the surface of titanium dioxide.Type: ApplicationFiled: July 20, 2004Publication date: January 6, 2005Applicant: National Institute of Advanced Industrial Science and TechnologyInventors: Toru Nonami, Takayuki Kumagai, Hiroshi Taoda
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Patent number: 6838059Abstract: An emission cleaning installation which is easy to connect continuously even to existing large-scale incineration furnaces and which is able to oxidatively break down and eliminate environmental pollutants contained in the emissions, for example dioxins, dibenzofurans, coplanar PCBs, nitrogen oxides (NOx) and the like without temperature control of the emission temperature, by the photocatalytic action of the photocatalyst, and to a method for emission cleaning and elimination which uses the abovementioned emission cleaning installation.Type: GrantFiled: March 18, 2002Date of Patent: January 4, 2005Assignee: National Institute of Advanced Industrial Science and TechnologyInventors: Hiroshi Taoda, Yukio Yamada, Kazuu Aizawa
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Patent number: 6835359Abstract: An emission cleaning installation which is easy to connect continuously even to existing large-scale incineration furnaces and which is able to oxidatively break down and eliminate environmental pollutants contained in the emissions, for example dioxins, dibenzofurans, coplanar PCBs, nitrogen oxides (NOx) and the like without temperature control of the emission temperature, by the photocatalytic action of the photocatalyst, and to a method for emission cleaning and elimination which uses the abovementioned emission cleaning installation.Type: GrantFiled: May 29, 2002Date of Patent: December 28, 2004Assignee: National Institute of Advanced Industrial Science and TechnologyInventors: Hiroshi Taoda, Yukio Yamada, Kazuu Aizawa
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Publication number: 20040245496Abstract: The present invention provides a novel cleaning agent comprising at least one member of the group consisting of TiOx (1.5<x<2), TiOxN2-x (1<x<2), diamond-like carbon, and a titania-silica complex TiOx—SiO2 (1.5<x≦2), and method for cleaning objects with said cleaning agent. The present invention further provides an antibacterial material containing the above-mentioned materials, an antibacterial product featuring the same, a method for manufacturing an environmental material, a novel functional adsorbent, and a method for manufacturing the same.Type: ApplicationFiled: March 26, 2004Publication date: December 9, 2004Inventor: Hiroshi Taoda
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Patent number: 6825155Abstract: A dental resin material mixed with a composition containing, as a maincomponent, titanium dioxide whose surface has been partly coated with apatite. In the dental resin material, it is preferable that anatase-, rutile-, brookit-type titanium dioxide or a mixture of these components is used as the titanium dioxide. The apatite for partial coating of titanium dioxide is produced by immersing powdery titanium dioxide in a pseudo body fluid and stirring the immersed titanium dioxide approximately at the same temperature as a human body temperature, i.e., 36° C. In this instance, it is important that the apatite is deposited in the form of platy crystals of less than 2 mm in thickness to cover 0.001-10% of the surface of titanium dioxide.Type: GrantFiled: April 4, 2002Date of Patent: November 30, 2004Assignee: National Institute of Advanced Industrial Science and TechnologyInventors: Toru Nonami, Takayuki Kumagai, Hiroshi Taoda
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Publication number: 20030230537Abstract: The present invention provides a method for water purification characterized in that a catalyst supporting iron and titanium oxide is mixed into the water to be treated containing suspended matter, and the suspended matter is adsorbed, decomposed, and precipitated, and the above-mentioned method for water purification is also characterized in that a catalyst supporting iron and titanium oxide and supported on a carrier is brought into contact with the wastewater or other water to be treated containing suspended matter, and the suspended matter is adsorbed, decomposed, and precipitated and further provides a water purifying agent produced by compounding an iron component with titanium oxide, and containing as an active component a catalyst supporting iron and titanium oxide, and a system thereof.Type: ApplicationFiled: January 29, 2003Publication date: December 18, 2003Applicant: Natl. Inst. of Adv. Indust. Sci. & Tech.Inventors: Hiroshi Taoda, Masanori Sakakibara, Tamotsu Katoh, Akito Asaoka
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Patent number: 6508992Abstract: The present invention relates to an emission cleaning installation which is easy to connect continuously even to existing large-scale incineration furnaces and which is able to oxidatively break down and eliminate environmental pollutants contained in the emissions, for example dioxins, dibenzofurans, coplanar PCBs, nitrogen oxides (NOx) and the like without temperature control of the emission temperature, by the photocatalytic action of the photocatalyst, and to a method for emission cleaning and elimination which uses the abovementioned emission cleaning installation.Type: GrantFiled: October 12, 2000Date of Patent: January 21, 2003Assignees: Agency of Industrial Science & Technology, Yamada IndustryInventors: Hiroshi Taoda, Yukio Yamada, Kazuu Aizawa
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Publication number: 20030000824Abstract: The present invention relates to an emission cleaning installation which is easy to connect continuously even to existing large-scale incineration furnaces and which is able to oxidatively break down and eliminate environmental pollutants contained in the emissions, for example dioxins, dibenzofurans, coplanar PCBs, nitrogen oxides (NOx) and the like without temperature control of the emission temperature, by the photocatalytic action of the photocatalyst, and to a method for emission cleaning and elimination which uses the abovementioned emission cleaning installation. The emission cleaning installation of a preferred exemplary embodiment is provided with a cylinder body, which is ultraviolet light permeable and through which the emissions pass, with photocatalyst pellets, which are accommodated in the interior of the abovementioned cylinder body and come into contact with the abovementioned emissions, and with a light source, which photoexcites the above-mentioned photocatalyst pellets.Type: ApplicationFiled: March 18, 2002Publication date: January 2, 2003Inventors: Hiroshi Taoda, Yukio Yamada, Kazuu Aizawa
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Publication number: 20020189930Abstract: The present invention relates to an emission cleaning installation which is easy to connect continuously even to existing large-scale incineration furnaces and which is able to oxidatively break down and eliminate environmental pollutants contained in the emissions, for example dioxins, dibenzofurans, coplanar PCBs, nitrogen oxides (NOx) and the like without temperature control of the emission temperature, by the photocatalytic action of the photocatalyst, and to a method for emission cleaning and elimination which uses the abovementioned emission cleaning installation. The emission cleaning installation of a preferred exemplary embodiment is provided with a cylinder body, which is ultraviolet light permeable and through which the emissions pass, with photocatalyst pellets, which are accommodated in the interior of the abovementioned cylinder body and come into contact with the abovementioned emissions, and with a light source, which photoexcites the abovementioned photocatalyst pellets.Type: ApplicationFiled: May 29, 2002Publication date: December 19, 2002Inventors: Hiroshi Taoda, Yukio Yamada, Kazuu Aizawa
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Publication number: 20020169073Abstract: A dental resin material mixed with a composition containing, as a maincomponent, titanium dioxide whose surface has been partly coated with apatite. In the dental resin material, it is preferable that anatase-, rutile-, brookit-type titanium dioxide or a mixture of these components is used as the titanium dioxide. The apatite for partial coating of titanium dioxide is produced by immersing powdery titanium dioxide in a pseudo body fluid and stirring the immersed titanium dioxide approximately at the same temperature as a human body temperature, i.e., 36° C. In this instance, it is important that the apatite is deposited in the form of platy crystals of less than 2 mm in thickness to cover 0.001-10% of the surface of titanium dioxide.Type: ApplicationFiled: April 4, 2002Publication date: November 14, 2002Inventors: Toru Nonami, Takayuki Kumagai, Hiroshi Taoda
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Patent number: 6291067Abstract: A photocatalytic powder for environmental clarification, comprising finely divided titanium dioxide particles having a coating of porous calcium phosphate formed on at least part of the surface of each titanium dioxide particle, wherein an anionic surface active agent is present at least on the interface between said coating of porous calcium phosphate and the titanium dioxide particle. This photocatalytic powder is produced by dispersing finely divided titanium dioxide particles in an aqueous slurry containing an anionic surface active agent, and then forming a coating of porous calcium phosphate on at least part of the surface of each titanium dioxide particle. This photocatalytic powder is used, for example, by supporting it in an organic polymer shaped article.Type: GrantFiled: July 14, 2000Date of Patent: September 18, 2001Assignees: Japan as represented by Director General of the Agency of Industrial Science and Technology, Showa Denko Kabushiki KaishaInventors: Hiroshi Taoda, Toru Nonami, Katsura Ito, Hiroyuki Hagihara
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Patent number: 6284314Abstract: A porous ceramic film having micropores of uniform diameter is formed on a substrate by depositing on the substrate a layer of a ceramic sol containing polyethylene glycol or polyethylene oxide and then heating the substrate. This porous ceramic film is used as a catalyst or catalyst support. When the ceramic of this film is titanium oxide, the film is particularly useful as a photocatalyst for the decomposition of harmful and malodorous substances.Type: GrantFiled: December 8, 1994Date of Patent: September 4, 2001Assignee: Agency of Industrial Science & Technology, Ministry of International Trade & IndustryInventors: Kazumi Kato, Hiroshi Taoda
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Patent number: 6231343Abstract: The present invention relates to a method for bleaching a discolored tooth, comprising the steps of applying a solution/paste of titanium dioxide powder and hydrogen peroxide solution onto the surface of discolored teeth, and bleaching the tooth based on the photocatalytic action that is produced by irradiating this area with light; and to a bleaching agent for applying onto the surface of discolored tooth to bleach the discolored tooth based on the photocatalytic action that is produced by irradiating this area with light, the bleaching agent comprising as active ingredients a combination of hydrogen peroxide solution and titanium dioxide producing photocatalytic action when irradiated with light.Type: GrantFiled: June 9, 2000Date of Patent: May 15, 2001Assignees: Agency of Industrial Science and TechnologyInventors: Takuro Ishibashi, Kouzo Ishibashi, Hiroshi Taoda, Toru Nonami
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Patent number: 6180548Abstract: An environment-purifying material is obtained by immersing a carrier with a titanium oxide film coated on its surface or a substrate comprising titanium oxide particles, in a pseudo-body fluid containing an excessive amount of calcium phosphate, and then coating the surface of the substrate with a porous calcium phosphate film that easily adsorbs toxic substances and that is inactive as a photocatalyst.Type: GrantFiled: August 10, 1998Date of Patent: January 30, 2001Assignees: Agency of Industrial Science and Technology, JME Co., Ltd.Inventors: Hiroshi Taoda, Toru Nonami, Fujio Aramaki, Shoshichi Aramaki
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Patent number: 6090736Abstract: A photocatalytic powder for environmental clarification, comprising finely divided titanium dioxide particles having a coating of porous calcium phosphate formed on at least part of the surface of each titanium dioxide particle, wherein an anionic surface active agent is present at least on the interface between said coating of porous calcium phosphate and the titanium dioxide particle. This photocatalytic powder is produced by dispersing finely divided titanium dioxide particles in an aqueous slurry containing an anionic surface active agent, and then forming a coating of porous calcium phosphate on at least part of the surface of each titanium dioxide particle. This photocatalytic powder is used, for example, by supporting it in an organic polymer shaped article.Type: GrantFiled: December 28, 1998Date of Patent: July 18, 2000Assignees: Agency of Industrial Science and Technology, Showa Denko Kabushiki Kaisha, Hiroshi Taoda, Toru NonamiInventors: Hiroshi Taoda, Toru Nonami, Katsura Ito, Hiroyuki Hagihara
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Patent number: 5981425Abstract: A coating composition which is excellent in water resistance, weatherability and durability and can maintain its appearance for a prolonged period of time can be provided. A coating composition comprising a coating component and a photocatalyst containing calcium phosphate and titanium oxide is disclosed. As the photocatalyst, use is made of titanium oxide particles partially covered thereon with calcium phosphate, or porous body coated thereon with a film of titanium oxide, the film of titanium oxide being further covered partially thereon with calcium phosphate. The crystal form of titanium oxide is preferably anatase. The organic coating includes vinyl-type synthetic resin emulsions, and the inorganic coating is e.g. a solution containing a metal alkoxide for forming a film by a sol-gel method.Type: GrantFiled: April 2, 1999Date of Patent: November 9, 1999Assignees: Agency of Industrial Science & Tech., Daicel Chemical Ind., Ltd., H. Taoda, T. NonamiInventors: Hiroshi Taoda, Toru Nonami, Takaaki Fujiwa, Masahiro Kagotani
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Patent number: 5707915Abstract: A photocatalyst sheet capable of purifying the living environment by decomposing and removing malodorous substances and environment-polluting substances in the air, preventing development of bacterium, fungi, and protecting contamination, and a method for production thereof which comprises coating a solution of a titania sol on the surface of a sheet of organic substance such as plastic, and heating it under pressure to deposit the titanium powder on the surface of the sheet.Type: GrantFiled: October 15, 1996Date of Patent: January 13, 1998Assignee: Japan as represented by Director General of Agency of Industrial Science and TechnologyInventor: Hiroshi Taoda
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Patent number: 5670206Abstract: A deodorizing lamp comprises a lamp unit and a titanium oxide film coating the glass surface of the lamp unit and optionally at least one metal selected from among iron, platinum, rhodium, ruthenium, palladium, silver, copper, zinc, and manganese deposited on the surface of the titanium oxide film. A method for the production of a deodorizing lamp comprises the steps of applying a titania sol or an aqueous hydrogen peroxide solution of titania gel to the glass surface of a lamp unit, drying the applied layer of titania sol or titania gel, firing the dried layer thereby forming a titanium oxide film on the glass surface, and optionally depositing at least one metal from among iron, platinum, rhodium, ruthenium, palladium, silver, copper, zinc, and manganese on the titanium oxide film.Type: GrantFiled: August 17, 1995Date of Patent: September 23, 1997Assignee: Agency of Industrial Science & Technology, Ministry of International Trade & IndustryInventors: Hiroshi Taoda, Eiji Watanabe