Patents by Inventor Munetoshi Watanabe
Munetoshi Watanabe 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: 20090239738Abstract: Titanium oxide-based photocatalysts which contain a metal halide in titanium oxide and which are prepared from titanium oxide and/or its precursor, which may optionally be heat treated, by contact with a reactive gas containing a metal halide of the formula MXn or MOXn (wherein M=a metal, X=a halogen, and n=an integer) with heating stably develop a high photocatalytic activity with visible light irradiation. The photocatalysts may subsequently be stabilized by contact with water or by heat treatment, and/or promoted by contact with a heteropoly acid and/or an isopoly acid so as to include a metal complex in the titanium oxide. Photocatalysts prepared in this manner exhibit novel ESR features. The present invention also provides methods for preparing these photocatalysts, a photocatalyst dispersion and a photocatalytic coating fluid containing such a photocatalyst, and photocatalytic functional products and methods for their manufacture using the photocatalyst.Type: ApplicationFiled: February 13, 2009Publication date: September 24, 2009Applicants: SUMITOMO METAL INDUSTRIES, LTD., OSAKA TITANIUM TECHNOLOGIES CO., LTD.Inventors: Katsumi Okada, Katsuhiro Nishihara, Yasuhiro Masaki, Haruhiko Kajimura, Michiyasu Takahashi, Tadashi Yao, Tadashi Ogasawara, Munetoshi Watanabe, Shiji Shimosaki, Kouji Oda, Sadanobu Nagaoka
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Patent number: 7521133Abstract: Titanium oxide-based photocatalysts which contain a metal halide in titanium oxide and which are prepared from titanium oxide and/or its precursor, which may optionally be heat treated, by contact with a reactive gas containing a metal halide of the formula MXn or MOXn (wherein M=a metal, X=a halogen, and n=an integer) with heating stably develop a high photocatalytic activity with visible light irradiation. The photocatalysts may subsequently be stabilized by contact with water or by heat treatment, and/or promoted by contact with a heteropoly acid and/or an isopoly acid so as to include a metal complex in the titanium oxide. Photocatalysts prepared in this manner exhibit novel ESR features. The present invention also provides methods for preparing these photocatalysts, a photocatalyst dispersion and a photocatalytic coating fluid containing such a photocatalyst, and photocatalytic functional products and methods for their manufacture using the photocatalyst.Type: GrantFiled: March 20, 2003Date of Patent: April 21, 2009Assignees: Osaka Titanium Technologies Co., Ltd., Sumitomo Metal Industries, Ltd.Inventors: Katsumi Okada, Katsuhiro Nishihara, Yasuhiro Masaki, Haruhiko Kajimura, Michiyasu Takahashi, Tadashi Yao, Tadashi Ogasawara, Munetoshi Watanabe, Shiji Shimosaki, Kouji Oda, Sadanobu Nagaoka
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Publication number: 20080038139Abstract: Provided are a porous sintered compact suitable for a filter, a power feeder in a polymer electrolyte membrane type water electrolyzer, a current collector in a solid polymer fuel cell and in addition a liquid dispersion plate, especially an ink dispersion plate for an ink jet printer ink and the like. A titanium powder sintered compact made of a plate-like porous compact is obtained by sintering spherical powder made of titanium or a titanium alloy produced by means of a gas atomization method. A void ratio in the range of from 35 to 55% is realized by filling without applying a pressure and sintering without applying a pressure.Type: ApplicationFiled: July 25, 2007Publication date: February 14, 2008Applicant: Sumitomo Titanium CorporationInventors: Takashi Onishi, Tadashi Ogasawara, Munetoshi Watanabe, Masamichi Kato
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Patent number: 7297271Abstract: Provided are a porous sintered compact suitable for a filter, a power feeder in a polymer electrolyte membrane type water electrolyzer, a current collector in a solid polymer fuel cell and in addition a liquid dispersion plate, especially an ink dispersion plate for an ink jet printer ink and the like. A titanium powder sintered compact made of a plate-like porous compact is obtained by sintering spherical powder made of titanium or a titanium alloy produced by means of a gas atomization method. A void ratio in the range of from 35 to 55% is realized by filling without applying a pressure and sintering without applying a pressure.Type: GrantFiled: August 10, 2006Date of Patent: November 20, 2007Assignee: Sumitomo Titanium CorporationInventors: Takashi Onishi, Tadashi Ogasawara, Munetoshi Watanabe, Masamichi Kato
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Patent number: 7151068Abstract: A sintered object of silicon monoxide for use as a material for forming silicon oxide thin films is provided of which the evaporation residue as determined by subjecting a sample thereof to thermogravimetry at a heating temperature of 1,300° C. and in a vacuum atmosphere, namely at a pressure of not higher than 10 Pa, is not more than 4% by mass relative to the sample before measurement. This sintered object can be produced by sintering SiO particles having a particle diameter of not smaller than 250 ?m, either after press forming thereof or during press forming thereof, in a non-oxygen atmosphere. This sintered object is high in evaporation rate and, when it is used as a material for film formation, an improvement in productivity in producing silicon oxide thin films can be expected. Thus, it can be widely applied in forming silicon oxide thin films useful as electric insulating films, mechanical protection films, optical films, barrier films of food packaging materials, etc.Type: GrantFiled: November 29, 2002Date of Patent: December 19, 2006Assignee: Sumitomo Titanium CorporationInventors: Yoshitake Natsume, Tadashi Ogasawara, Munetoshi Watanabe, Kazuomi Azuma, Toshiharu Iwase
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Publication number: 20060266698Abstract: Provided are a porous sintered compact suitable for a filter, a power feeder in a polymer electrolyte membrane type water electrolyzer, a current collector in a solid polymer fuel cell and in addition a liquid dispersion plate, especially an ink dispersion plate for an ink jet printer ink and the like. A titanium powder sintered compact made of a plate-like porous compact is obtained by sintering spherical powder made of titanium or a titanium alloy produced by means of a gas atomization method. A void ratio in the range of from 35 to 55% is realized by filling without applying a pressure and sintering without applying a pressure.Type: ApplicationFiled: August 10, 2006Publication date: November 30, 2006Applicant: Sumitomo Titanium CorporationInventors: Takashi Onishi, Tadashi Ogasawara, Munetoshi Watanabe, Masamichi Kato
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Publication number: 20060266699Abstract: Provided are a porous sintered compact suitable for a filter, a power feeder in a polymer electrolyte membrane type water electrolyzer, a current collector in a solid polymer fuel cell and in addition a liquid dispersion plate, especially an ink dispersion plate for an ink jet printer ink and the like. A titanium powder sintered compact made of a plate-like porous compact is obtained by sintering spherical powder made of titanium or a titanium alloy produced by means of a gas atomization method. A void ratio in the range of from 35 to 55% is realized by filling without applying a pressure and sintering without applying a pressure.Type: ApplicationFiled: August 10, 2006Publication date: November 30, 2006Applicant: Sumitomo Titanium CorporationInventors: Takashi Onishi, Tadashi Ogasawara, Munetoshi Watanabe, Masamichi Kato
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Publication number: 20060266697Abstract: Provided are a porous sintered compact suitable for a filter, a power feeder in a polymer electrolyte membrane type water electrolyzer, a current collector in a solid polymer fuel cell and in addition a liquid dispersion plate, especially an ink dispersion plate for an ink jet printer ink and the like. A titanium powder sintered compact made of a plate-like porous compact is obtained by sintering spherical powder made of titanium or a titanium alloy produced by means of a gas atomization method. A void ratio in the range of from 35 to 55% is realized by filling without applying a pressure and sintering without applying a pressure.Type: ApplicationFiled: August 10, 2006Publication date: November 30, 2006Applicant: Sumitomo Titanium CorporationInventors: Takashi Onishi, Tadashi Ogasawara, Munetoshi Watanabe, Masamichi Kato
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Publication number: 20050227008Abstract: Titanium oxide-based photocatalysts which contain a metal halide in titanium oxide and which are prepared from titanium oxide and/or its precursor, which may optionally be heat treated, by contact with a reactive gas containing a metal halide of the formula MXn or MOXn (wherein M=a metal, X=a halogen, and n=an integer) with heating stably develop a high photocatalytic activity with visible light irradiation. The photocatalysts may subsequently be stabilized by contact with water or by heat treatment, and/or promoted by contact with a heteropoly acid and/or an isopoly acid so as to include a metal complex in the titanium oxide. Photocatalysts prepared in this manner exhibit novel ESR features. The present invention also provides methods for preparing these photocatalysts, a photocatalyst dispersion and a photocatalytic coating fluid containing such a photocatalyst, and photocatalytic functional products and methods for their manufacture using the photocatalyst.Type: ApplicationFiled: March 20, 2003Publication date: October 13, 2005Inventors: Katsumi Okada, Katsuhiro Nishihara, Yasuhiro Masaki, Haruhiko Kajimura, Michiyasu Takahashi, Tadashi Yao, Tadashi Ogasawara, Munetoshi Watanabe, Shiji Shimosaki, Kouji Oda, Sadanobu Nagaoka
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Publication number: 20050214533Abstract: A photocatalytic composite material having a high activity and good durability is produced by coating the surface of a substrate with a continuous film of titanium oxide by vapor deposition from titanium tetrachloride. In the case of a substrate which is a mass of inorganic fibers such as glass cloth, the individual fibers or filaments in the mass are coated with titanium oxide. The vapor deposition is performed by contacting the substrate, such as a mass of inorganic fibers, which has been heated to 100-300° C., with a mixture of distilled pure titanium tetrachloride vapor and water vapor to form a film of a titanium oxide precursor on the surface of the substrate. Then, the substrate is heated at 300-600° C. in an oxidizing atmosphere, resulting in the formation on the substrate surface of a continuous film of a photocatalyst having a high activity and good adhesion to the substrate and comprising crystalline titanium oxide with an average crystallite diameter of 50 nm or smaller.Type: ApplicationFiled: July 26, 2002Publication date: September 29, 2005Applicant: Sumitomo Titanium CorporationInventors: Shinji Shimosaki, Tadashi Ogasawara, Munetoshi Watanabe, Kouji Oda, Sadanobu Nagaoaka, Yasuhiro Masaki
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Publication number: 20050085095Abstract: A sintered object of silicon monoxide for use as a material for forming silicon oxide thin films is provided of which the evaporation residue as determined by subjecting a sample thereof to thermogravimetry at a heating temperature of 1,300° C. and in a vacuum atmosphere, namely at a pressure of not higher than 10 Pa, is not more than 4% by mass relative to the sample before measurement. This sintered object can be produced by sintering SiO particles having a particle diameter of not smaller than 250 ?m, either after press forming thereof or during press forming thereof, in a non-oxygen atmosphere. This sintered object is high in evaporation rate and, when it is used as a material for film formation, an improvement in productivity in producing silicon oxide thin films can be expected. Thus, it can be widely applied in forming silicon oxide thin films useful as electric insulating films, mechanical protection films, optical films, barrier films of food packaging materials, etc.Type: ApplicationFiled: November 29, 2002Publication date: April 21, 2005Inventors: Yoshitake Natsume, Tadashi Ogasawara, Munetoshi Watanabe, Kazuomi Azuma, Toshiharu Iwase
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Publication number: 20040182700Abstract: It is an object of the present invention to provide a silicon monoxide sinter having a uniform texture, good machinability, and splash resistance, which are all required of a silicon monoxide vapor deposition material, or a silicon monoxide sinter having a diameter of at least 100 mm and the shape required of a sputtering target material, and to obtain both of these sinters stably and with good productivity. A silicon monoxide sinter with a bulk density of at least 1.68 g/cm3 can be obtained by sintering under hot pressing conditions comprising a pressing pressure of at least 15 MPa and a temperature of 1200 to 1350° C., and by using a press die which comprises an inner die divided into a plurality of segments and integrated in an integrated outer die with a gap therebetween, and a cushioning material disposed in this gap, it is possible to obtain a silicon monoxide sinter whose diameter is at least 100 mm and whose bulk density is at least 2.Type: ApplicationFiled: July 17, 2003Publication date: September 23, 2004Inventors: Yoshitake Natsume, Takashi Onishi, Tadashi Ogasawara, Munetoshi Watanabe, Toshiharu Iwase
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Publication number: 20040110059Abstract: Provided are a porous sintered compact suitable for a filter, a power feeder in a polymer electrolyte membrane type water electrolyzer, a current collector in a solid polymer fuel cell and in addition a liquid dispersion plate, especially an ink dispersion plate for an ink jet printer ink and the like. A titanium powder sintered compact made of a plate-like porous compact is obtained by sintering spherical powder made of titanium or a titanium alloy produced by means of a gas atomization method. A void ratio in the range of from 35 to 55% is realized by filling without applying a pressure and sintering without applying a pressure.Type: ApplicationFiled: February 2, 2004Publication date: June 10, 2004Inventors: Takashi Onishi, Tadashi Ogasawara, Munetoshi Watanabe, Masamichi Kato
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Patent number: 6093259Abstract: This invention provides color development methods of metallic titanium used for manufacture of black titanium or titanium tinted in other chromatic colors. In one method, metallic titanium is treated with an alkali solution. It enables colored titanium rich in color variation with high efficiency, irrespective of the material configuration. The brightness of black is further reduced by conducting a nitriding process, after this process. In another method, the metallic titanium is oxidized after forming the titanium nitride film on its surface by nitriding it. Black titanium is produced with low brightness. In this way, colored titanium with various tones is produced. Moreover, the close adherence of the film with colors developed thereon is enhanced.Type: GrantFiled: November 28, 1997Date of Patent: July 25, 2000Assignee: Sumitomo Sitix CorporationInventors: Munetoshi Watanabe, Tsuyoshi Sakaguchi
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Patent number: 5229101Abstract: A process for producing a powder of perovskite-type double oxide comprises the steps of reacting water-soluble lead oxide and aqueous solution of alkaline metal in a reaction vessel, and precipitating lead group hydroxide; then adding a solution of Nb group, precipitating Nb group hydroxide, and reacting hydrothermally in the reaction vessel. As a result, according to the present invention, the process of manufacture is capable of producing fine particles of pure perovskite phase, which particles are excellent in homogeneity and the degree of sintering.Type: GrantFiled: January 9, 1991Date of Patent: July 20, 1993Inventors: Munetoshi Watanabe, Hiroyuki Hata
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Patent number: 5204031Abstract: A powder of oxide which is a material for dielectric ceramics including perovskite-type double oxide containing lead, and a process for producing dielectric ceramics using the powder. In the process of this invention, perovskite-type double oxide containing lead are initially produced by means of hydrothermal reaction, and the powder is heat-treated at 500.degree. to 1000.degree. C. Consequently, the specific surface area of the powder becomes 20 m.sup.2 /g or less. The powder is mixed with binder and compressed, molded and debinded, and consequently, the compact attains 50% or more of theoretical density. Thereafter, the compact is sintered. As a result, the process of manufacture according to the present invention is capable of producing dielectric ceramics, wherein deformation and cracks do not occur.Type: GrantFiled: January 30, 1992Date of Patent: April 20, 1993Assignee: Osaka Titanium Co., Ltd.Inventors: Munetoshi Watanabe, Yasuhiro Shimizu, Hiroyuki Hata