Patents by Inventor Toru Nonami
Toru Nonami 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).
-
Publication number: 20090156394Abstract: The present invention is to provide an inorganic sintered material that excels in photocatalytic activity as compared with that exhibited in the use of a photocatalyst of titanium oxide only. It is provided an inorganic sintered material comprising a photocatalyst, wherein the photocatalyst comprising a base having photocatalytic activity; and a silicon oxide film covering the base, wherein the film is substantially pore-free, and wherein the photocatalyst has a alkali metal content of not less than 1 ppm but not more than 1,000 ppm.Type: ApplicationFiled: August 10, 2006Publication date: June 18, 2009Applicant: MITSUI CHEMICALS, INC.Inventors: Nobuhiko Horiuchi, Takashi Nabeta, Satoru Miyazoe, Hiroshi Suizu, Toru Nonami
-
Patent number: 7521084Abstract: The present invention provides a method for manufacturing a titanium dioxide photocatalyst composite material, and relates to a method for manufacturing a titanium dioxide composite ceramic material on which photoactive (photooxidative) apatite or another calcium phosphate monocrystal is partially deposited, wherein the method is characterized in promoting the following reactions by immersing titanium dioxide in an aqueous solution containing an excess of phosphorus ions and calcium ions in comparison with an artificial body fluid in order to fabricate a titanium dioxide photocatalyst composite material on which a compound composed of one or more apatite or other calcium phosphate Ca9(PO4)6 monocrystals is partially deposited: (1) forming and aggregating calcium phosphate clusters and producing octacalcium phosphate; (2) converting the octacalcium phosphate into an apatite or other calcium phosphate Ca9(PO4)6 monocrystal; and (3) growing the monocrystal.Type: GrantFiled: June 5, 2003Date of Patent: April 21, 2009Assignee: National Institute of Advanced Industrial Science and TechnologyInventor: Toru Nonami
-
Publication number: 20050227119Abstract: The present invention provides a hydraulic composite material endowed with multiple functions such as a photocatalytic function, and a method for production thereof, and relates to hydraulic a composite material having a substance-adsorbing function, humidity-adjusting function, and/or photocatalytic function, the material being characterized in that calcium silicate cement or a calcium phosphate cement is deposited as a hydraulic material on a suitable substrate in the presence of water so as to be hardened and to thereby cause the cement to solidify, be fixed, and self-adhere to the application surface; and also relates to a method for producing a hydraulic composite material characterized in that a suspension or solution containing the above hydraulic material is mixed with a photocatalyst.Type: ApplicationFiled: July 22, 2003Publication date: October 13, 2005Inventor: Toru Nonami
-
Publication number: 20050175852Abstract: The present invention provides a method for preparing a high-density thin silica film with excellent translucency on a substrate having an arbitrary profile and surface characteristics, a method for controlling the surface roughness of the thin silica film, a method for preparing a silica-titania composite film, a composite film with photocatalytic action obtained by these methods, and a composite structure.Type: ApplicationFiled: March 19, 2003Publication date: August 11, 2005Inventors: Hiroki Okudera, Toru Nonami
-
Publication number: 20050175788Abstract: The present invention provides a method for manufacturing a titanium dioxide photocatalyst composite material, and relates to a method for manufacturing a titanium dioxide composite ceramic material on which photoactive (photooxidative) apatite or another calcium phosphate monocrystal is partially deposited, wherein the method is characterized in promoting the following reactions by immersing titanium dioxide in an aqueous solution containing an excess of phosphorus ions and calcium ions in comparison with an artificial body fluid in order to fabricate a titanium dioxide photocatalyst composite material on which a compound composed of one or more apatite or other calcium phosphate Ca9(PO4)6 monocrystals is partially deposited: (1) forming and aggregating calcium phosphate clusters and producing octacalcium phosphate; (2) converting the octacalcium phosphate into an apatite or other calcium phosphate Ca9(PO4)6 monocrystal; and (3) growing the monocrystal.Type: ApplicationFiled: June 5, 2003Publication date: August 11, 2005Applicant: NAT INSTTITUTE OF ADVANCED INDUST SCIENCE & TECHInventor: Toru Nonami
-
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
-
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
-
Publication number: 20040197300Abstract: The present invention provides a new active oxygen generating material and a manufacturing method thereof. The present invention relates to an active oxygen generating agent containing polyaniline compounded or mixed with calcium phosphate that is made by forming a porous calcium phosphate coating on at least part of the surface of polyaniline particles; to a method for manufacturing an active oxygen generating agent component wherein calcium phosphate is precipitated onto the surface of polyaniline by immersing the polyaniline in a pseudo-fluid comprising calcium ions and phosphate ions; to a method for generating active oxygen by bringing a liquid that contains dissolved oxygen in contact with the above-mentioned active oxygen generating agent; and a composition for an environmental clarification.Type: ApplicationFiled: May 20, 2004Publication date: October 7, 2004Inventor: Toru Nonami
-
Publication number: 20040171505Abstract: The present invention provides a cleansing, bleaching, and sterilizing agent and a cleansing method for the oral cavity, dental prosthetics, and so forth, and a method for manufacturing said agent, a dental prosthetic cleansing system, a bleaching agent for discolored teeth and a method for manufacturing said agent, a bleaching system, a composition for environmental purification containing a photoactive compound composed of phosphorus and calcium, and a paint using the same.Type: ApplicationFiled: January 16, 2004Publication date: September 2, 2004Inventors: Toru Nonami, Hiroko Hase
-
Patent number: 6783363Abstract: A system for bleaching discolored teeth is provided, and this system has a function irradiating light emitted from a light-emitting section to the surface of teeth applied with a chemical agent including titanium dioxide and hydrogen peroxide, a irradiation energy of wavelength 380 to 420 nm of the light emitted from the light-emitting section is at least 37 mW/cm2 and the ratio of irradiation energy of wavelength 380 to 420 nm with respect to the irradiation energy of wavelength 200 to 800 nm thereof is at least 36% at this light-emitting section, and whereby it is possible to obtain high bleaching effect of the teeth, to reduce the heat applied to the teeth to a low level (no more than 40° C.) and to reduce emission of ultraviolet light that has an adverse effect on the human body to a low level.Type: GrantFiled: April 1, 2002Date of Patent: August 31, 2004Assignees: Ushio Denki Kabushiki Kaisya, EVIS Inc, National Institute of Advanced Industrial Science and TechnologyInventors: Hiromasa Eguchi, Kazutomo Takami, Takuro Ishibashi, Toru Nonami
-
Publication number: 20040109829Abstract: A tooth bleaching agent comprising (a) titanium dioxide initiating photocatalytic action by irradiation with light, (b) a chemical compound generating hydrogen peroxide in aqueous solution, (c) an inorganic thickening agent or an organic thickening agent, (d) phosphoric acid and (d) condensed phosphate is proposed. A tooth bleaching method characterized by bleaching tooth by applying the breaching agent onto the surface of a tooth followed by irradiating the applied surface with light is also proposed.Type: ApplicationFiled: December 30, 2003Publication date: June 10, 2004Inventors: Toru Nonami, Minoru Kakuta, Masao Someya, Masumi Ogasawara, Takuro Ishibashi, Kouzo Ishibashi
-
Publication number: 20020177097Abstract: A system for bleaching discolored teeth is provided, and this system has a function irradiating light emitted from a light-emitting section to the surface of teeth applied with a chemical agent including titanium dioxide and hydrogen peroxide, a irradiation energy of wavelength 380 to 420 nm of the light emitted from the light-emitting section is at least 37 mW/cm2 and the ratio of irradiation energy of wavelength 380 to 420 nm with respect to the irradiation energy of wavelength 200 to 800 nm thereof is at least 36% at this light-emitting section, and whereby it is possible to obtain high bleaching effect of the teeth, to reduce the heat applied to the teeth to a low level (no more than 40° C.) and to reduce emission of ultraviolet light that has an adverse effect on the human body to a low level.Type: ApplicationFiled: April 1, 2002Publication date: November 28, 2002Applicant: Ushio Denki Kabushiki KaisyaInventors: Hiromasa Eguchi, Kazutomo Takami, Takuro Ishibashi, Toru Nonami
-
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
-
Patent number: 6306785Abstract: A living tissue replacement of crystallized glass having bioaffinity and mechanical strength is briefly obtained simply by pressure molding or machining without using a special equipment. A glass material having a softening point below its crystallization temperature and exhibiting viscous flow at temperatures below its melting point is heated at a temperature above its Tg and pressed at the temperature to mold to a desired shape, thereby manufacturing a living tissue replacement such as a dental crown. Molding can be done under a pressure of up to 20 MPa.Type: GrantFiled: March 10, 1999Date of Patent: October 23, 2001Assignee: TDK CorporationInventors: Toru Nonami, Tatsuji Sano, Sadami Tsutsumi, Tetsuo Urabe, Masahiro Fukuma
-
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
-
Patent number: 6287118Abstract: The present invention relates to a sheet type oral implant, and the present invention is an oral implant to be used by being secured on an alveolar bone, this oral implant is characterized by having a sheet portion whose shape on the bone side matches in an inverted convex-concave arrangement the surface shape of the alveolar bone; fixing hooks provided to the edges of the sheet portion and designed for securing the oral implant on the alveolar bone and preventing the implant from falling off; and a post portion for mounting an artificial tooth.Type: GrantFiled: September 10, 1999Date of Patent: September 11, 2001Assignee: Agency of Industrial Science and TechnologyInventors: Katsuyoshi Naganuma, Akira Kamiya, Akira Watatsu, Toru Nonami, Makoto Kato
-
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
-
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
-
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
-
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