Patents by Inventor Masato Wakamura
Masato Wakamura 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: 11951459Abstract: A photocatalyst made of cuprous bromide, wherein the cuprous bromide expresses a photocatalytic property of decomposing a substance brought into contact with the cuprous bromide by irradiation with light.Type: GrantFiled: December 9, 2020Date of Patent: April 9, 2024Assignee: FUJITSU LIMITEDInventors: Michio Ushigome, Masato Wakamura, Osamu Tsuboi
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Publication number: 20210086169Abstract: A photocatalyst made of cuprous bromide, wherein the cuprous bromide expresses a photocatalytic property of decomposing a substance brought into contact with the cuprous bromide by irradiation with light.Type: ApplicationFiled: December 9, 2020Publication date: March 25, 2021Applicant: FUJITSU LIMITEDInventors: Michio USHIGOME, Masato WAKAMURA, Osamu TSUBOI
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Patent number: 10906029Abstract: Provided is a photocatalyst including a photocatalyst in which part of calcium ions are substituted with titanium ions, and part of phosphoric acid ions are substituted with metal oxoacid ions in a calcium hydroxyapatite crystal structure.Type: GrantFiled: May 16, 2018Date of Patent: February 2, 2021Assignees: FUJITSU LIMITED, TOKYO INSTITUTE OF TECHNOLOGYInventors: Masato Wakamura, Akira Nakajima, Noppakhate Jiraborvornpongsa
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Patent number: 10507455Abstract: A photocatalyst, represented by the following general formula (1): X(VO4)6(OH)2??General Formula (1) wherein X represents Za1Tib1 or Za2Tib2Agc2 (where Z is Ca or Sr; a1 is 7.0 to 9.5; b1 is 0.5 to 3.0; a2 is 7.0 to 9.5; b2 is 0.4 to 1.5; c2 is 0.1 to 2.0; a1+b1 is 9.0 to 10.0; and a2+b2+c2 is 9.0 to 10.0) in the general formula (1).Type: GrantFiled: May 5, 2015Date of Patent: December 17, 2019Assignee: FUJITSU LIMITEDInventors: Mineharu Tsukada, Florence Nawalage Cooray, Toshihisa Anazawa, Masato Wakamura
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Patent number: 10407319Abstract: A photocatalytic filter including first photocatalytic particles each of which is a composite of an adsorbent and titanium apatite, second photocatalytic particles each of which is glass coated with titanium apatite, a light source configured to emit ultraviolet rays, and a container accommodating the first photocatalytic particles, the second photocatalytic particles, and the light source.Type: GrantFiled: September 6, 2017Date of Patent: September 10, 2019Assignee: FUJITSU LIMITEDInventors: Masato Wakamura, Mineharu Tsukada, Toshihisa Anazawa
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Publication number: 20180333707Abstract: Provided is a photocatalyst including a photocatalyst in which part of calcium ions are substituted with titanium ions, and part of phosphoric acid ions are substituted with metal oxoacid ions in a calcium hydroxyapatite crystal structure.Type: ApplicationFiled: May 16, 2018Publication date: November 22, 2018Applicants: FUJITSU LIMITED, Tokyo Institute of TechnologyInventors: MASATO WAKAMURA, AKIRA NAKAJIMA, NOPPAKHATE JIRABORVORNPONGSA
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Publication number: 20170362096Abstract: A photocatalytic filter including first photocatalytic particles each of which is a composite of an adsorbent and titanium apatite, second photocatalytic particles each of which is glass coated with titanium apatite, a light source configured to emit ultraviolet rays, and a container accommodating the first photocatalytic particles, the second photocatalytic particles, and the light source.Type: ApplicationFiled: September 6, 2017Publication date: December 21, 2017Applicant: FUJITSU LIMITEDInventors: Masato Wakamura, Mineharu Tsukada, Toshihisa Anazawa
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Publication number: 20160074288Abstract: An intraoral fixing composition, containing: titanium apatite, which is obtained by substituting part of calcium in calcium hydroxyapatite with titanium, wherein the intraoral fixing composition is fixed at an intraoral site in an unreleasable state.Type: ApplicationFiled: November 20, 2015Publication date: March 17, 2016Applicant: FUJITSU LIMITEDInventors: MASATO WAKAMURA, Toshihisa Anazawa, Mineharu Tsukada, Florence Nawalage Cooray
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Publication number: 20150231606Abstract: A photocatalyst, represented by the following general formula (1): X(VO4)6(OH)2??General Formula (1) wherein X represents Za1Tib1 or Za2Tib2Agc2 (where Z is Ca or Sr; a1 is 7.0 to 9.5; b1 is 0.5 to 3.0; a2 is 7.0 to 9.5; b2 is 0.4 to 1.5; c2 is 0.1 to 2.0; a1+b1 is 9.0 to 10.0; and a2+b2+c2 is 9.0 to 10.0) in the general formula (1).Type: ApplicationFiled: May 5, 2015Publication date: August 20, 2015Applicant: FUJITSU LIMITEDInventors: Mineharu Tsukada, Florence Nawalage Cooray, Toshihisa Anazawa, MASATO WAKAMURA
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Patent number: 8846563Abstract: The present invention relates to apatite that includes metal atoms having a photocatalytic function and other metal atoms, and the metal atoms having a photocatalytic function include metal atoms that absorb energy corresponding to light energy of visible light. By applying the apatite as a base material of various products to be arranged indoors, the photocatalytic function can be exhibited indoors as well.Type: GrantFiled: June 28, 2011Date of Patent: September 30, 2014Assignees: Fujitsu Limited, The University of TokyoInventors: Toshiya Watanabe, Masato Wakamura, Yasuo Naganuma
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Publication number: 20140287913Abstract: A photocatalyst, which includes X.titanium hydroxyapatite doped with silver, where the X is an alkaline earth metal having an atomic number equal to or higher than that of calcium. A photocatalyst, which includes calcium.titanium hydroxyapatite, in which at least part of the calcium is substituted with an alkaline earth metal having an atomic number equal to or higher than that of strontium.Type: ApplicationFiled: June 5, 2014Publication date: September 25, 2014Applicant: FUJITSU LIMITEDInventors: Mineharu TSUKADA, Toshihisa Anazawa, Masato Wakamura
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Patent number: 8663759Abstract: The disclosed protective bag contains an air-permeable bag, a photoreflecting material, and a photocatalytic material, where the photoreflecting material and the photocatalytic material are provided on an outer surface of the air-permeable bag. For example, an embodiment where the air-permeable bag has concave parts formed on the outer surface thereof, an embodiment where the photoreflecting material is colored fibers, and an embodiment where photoreflecting material contains first photoreflecting particles having a volume average particle size of 100 ?m to 200 ?m, and second photoreflecting particles having a volume average particle size of 1 ?m to 5 ?m are preferable.Type: GrantFiled: April 5, 2012Date of Patent: March 4, 2014Assignee: Fujitsu LimitedInventors: Masato Wakamura, Katsuhiro Atsuma
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Patent number: 8354049Abstract: An antibacterial measure using titanium oxide includes mixing titanium oxide in a resin to form a coating resin, and then coating a key surface with the coating resin. This method requires formation of a coating layer on a resin molding and thus increases the number of the production steps and cost. Furthermore, in the method, a coating film containing an antibacterial agent is scraped off light by little at each time of keying, and thus the film is finally completely removed to lose its antibacterial function. A conceivable measure against this includes directly mixing a resin and an antibacterial agent. However, titanium oxide used as an antibacterial agent degrades a raw material resin. It has recently be thought that photocatalytic apatite as a substitute for titanium oxide also causes chalking, and an antibacterial coating layer has been formed on a surface of a resin molding.Type: GrantFiled: May 19, 2010Date of Patent: January 15, 2013Assignee: Fujitsu LimitedInventors: Masato Wakamura, Noriyasu Aso
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Patent number: 8349147Abstract: A method for forming a photocatalytic apatite includes a target production step (S12) for producing a sputtering target that contains photocatalytic apatite, and a sputtering step (S13) for forming a photocatalytic apatite film on a substrate by sputtering using the target. A firing step (S11) for firing the photocatalytic apatite is conducted before the sputtering step so as to increase the crystallinity of the photocatalytic apatite.Type: GrantFiled: June 1, 2005Date of Patent: January 8, 2013Assignee: Fujitsu LimitedInventors: Noriyasu Aso, Masato Wakamura
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Publication number: 20120288218Abstract: The disclosed protective bag contains an air-permeable bag, a photoreflecting material, and a photocatalytic material, where the photoreflecting material and the photocatalytic material are provided on an outer surface of the air-permeable bag. For example, an embodiment where the air-permeable bag has concave parts formed on the outer surface thereof, an embodiment where the photoreflecting material is colored fibers, and an embodiment where photoreflecting material contains first photoreflecting particles having a volume average particle size of 100 ?m to 200 ?m, and second photoreflecting particles having a volume average particle size of 1 ?m to 5 ?m are preferable.Type: ApplicationFiled: April 5, 2012Publication date: November 15, 2012Applicant: FUJITSU LIMITEDInventors: Masato WAKAMURA, Katsuhiro ATSUMA
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Patent number: 8080214Abstract: An air cleaner X1 includes a cleaning chamber (R2) through which air can pass, an ultraviolet light source (12) provided in the cleaning chamber (R2), a flow generator (11) for generating an air flow in the cleaning chamber (R2) by passing air through the cleaning chamber (R2), and photocatalyst granules (13) having a photocatalytic function, held in the cleaning chamber (R2), and displaceable by the air flow.Type: GrantFiled: May 13, 2005Date of Patent: December 20, 2011Assignee: Fujitsu LimitedInventor: Masato Wakamura
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Publication number: 20110263414Abstract: The present invention relates to apatite that includes metal atoms having a photocatalytic function and other metal atoms, and the metal atoms having a photocatalytic function include metal atoms that absorb energy corresponding to light energy of visible light. By applying the apatite as a base material of various products to be arranged indoors, the photocatalytic function can be exhibited indoors as well.Type: ApplicationFiled: June 28, 2011Publication date: October 27, 2011Applicants: THE UNIVERSITY OF TOKYO, FUJITSU LIMITEDInventors: Toshiya Watanabe, Masato Wakamura, Yasuo Naganuma
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Patent number: 8030245Abstract: An agricultural chemical component includes an active agricultural chemical ingredient and a powder metal-modified apatite which has part of metal atoms in its apatite crystal structure provided by an optically catalytic metal. Preferably, the metal-modified apatite is coated with an organic film.Type: GrantFiled: December 16, 2004Date of Patent: October 4, 2011Assignee: Fujitsu LimitedInventor: Masato Wakamura
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Patent number: 7989258Abstract: An apatite-containing film having photocatalytic activity is produced by a process comprising the steps of preparing a liquid mixture comprising a Ca-containing compound and a P-containing compound, subjecting the liquid mixture to reaction to prepare an apatite-precursor composition, applying the apatite-precursor composition to a substrate, and drying the applied apatite-precursor composition. The process may further comprise a heating step after the drying step. The apatite-precursor composition is preferably in the form of a sol.Type: GrantFiled: February 16, 2010Date of Patent: August 2, 2011Assignees: Fujitsu Limited, Toudai TLO, Ltd.Inventors: Toshiya Watanabe, Naoya Yoshida, Masato Wakamura
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Patent number: 7939187Abstract: An apatite-containing film having photocatalytic activity is produced by a process comprising the steps of preparing a liquid mixture comprising a Ca-containing compound and a P-containing compound, subjecting the liquid mixture to reaction to prepare an apatite-precursor composition, applying the apatite-precursor composition to a substrate, and drying the applied apatite-precursor composition. The process may further comprise a heating step after the drying step. The apatite-precursor composition is preferably in the form of a sol.Type: GrantFiled: January 31, 2005Date of Patent: May 10, 2011Assignees: Fujitsu Limited, Toudai TLO, Ltd.Inventors: Toshiya Watanabe, Naoya Yoshida, Masato Wakamura