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).

  • Patent number: 11951459
    Abstract: 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: Grant
    Filed: December 9, 2020
    Date of Patent: April 9, 2024
    Assignee: FUJITSU LIMITED
    Inventors: Michio Ushigome, Masato Wakamura, Osamu Tsuboi
  • Publication number: 20210086169
    Abstract: 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: Application
    Filed: December 9, 2020
    Publication date: March 25, 2021
    Applicant: FUJITSU LIMITED
    Inventors: Michio USHIGOME, Masato WAKAMURA, Osamu TSUBOI
  • Patent number: 10906029
    Abstract: 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: Grant
    Filed: May 16, 2018
    Date of Patent: February 2, 2021
    Assignees: FUJITSU LIMITED, TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Masato Wakamura, Akira Nakajima, Noppakhate Jiraborvornpongsa
  • Patent number: 10507455
    Abstract: 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: Grant
    Filed: May 5, 2015
    Date of Patent: December 17, 2019
    Assignee: FUJITSU LIMITED
    Inventors: Mineharu Tsukada, Florence Nawalage Cooray, Toshihisa Anazawa, Masato Wakamura
  • Patent number: 10407319
    Abstract: 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: Grant
    Filed: September 6, 2017
    Date of Patent: September 10, 2019
    Assignee: FUJITSU LIMITED
    Inventors: Masato Wakamura, Mineharu Tsukada, Toshihisa Anazawa
  • Publication number: 20180333707
    Abstract: 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: Application
    Filed: May 16, 2018
    Publication date: November 22, 2018
    Applicants: FUJITSU LIMITED, Tokyo Institute of Technology
    Inventors: MASATO WAKAMURA, AKIRA NAKAJIMA, NOPPAKHATE JIRABORVORNPONGSA
  • Publication number: 20170362096
    Abstract: 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: Application
    Filed: September 6, 2017
    Publication date: December 21, 2017
    Applicant: FUJITSU LIMITED
    Inventors: Masato Wakamura, Mineharu Tsukada, Toshihisa Anazawa
  • Publication number: 20160074288
    Abstract: 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: Application
    Filed: November 20, 2015
    Publication date: March 17, 2016
    Applicant: FUJITSU LIMITED
    Inventors: MASATO WAKAMURA, Toshihisa Anazawa, Mineharu Tsukada, Florence Nawalage Cooray
  • Publication number: 20150231606
    Abstract: 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: Application
    Filed: May 5, 2015
    Publication date: August 20, 2015
    Applicant: FUJITSU LIMITED
    Inventors: Mineharu Tsukada, Florence Nawalage Cooray, Toshihisa Anazawa, MASATO WAKAMURA
  • Patent number: 8846563
    Abstract: 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: Grant
    Filed: June 28, 2011
    Date of Patent: September 30, 2014
    Assignees: Fujitsu Limited, The University of Tokyo
    Inventors: Toshiya Watanabe, Masato Wakamura, Yasuo Naganuma
  • Publication number: 20140287913
    Abstract: 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: Application
    Filed: June 5, 2014
    Publication date: September 25, 2014
    Applicant: FUJITSU LIMITED
    Inventors: Mineharu TSUKADA, Toshihisa Anazawa, Masato Wakamura
  • Patent number: 8663759
    Abstract: 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: Grant
    Filed: April 5, 2012
    Date of Patent: March 4, 2014
    Assignee: Fujitsu Limited
    Inventors: Masato Wakamura, Katsuhiro Atsuma
  • Patent number: 8354049
    Abstract: 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: Grant
    Filed: May 19, 2010
    Date of Patent: January 15, 2013
    Assignee: Fujitsu Limited
    Inventors: Masato Wakamura, Noriyasu Aso
  • Patent number: 8349147
    Abstract: 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: Grant
    Filed: June 1, 2005
    Date of Patent: January 8, 2013
    Assignee: Fujitsu Limited
    Inventors: Noriyasu Aso, Masato Wakamura
  • Publication number: 20120288218
    Abstract: 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: Application
    Filed: April 5, 2012
    Publication date: November 15, 2012
    Applicant: FUJITSU LIMITED
    Inventors: Masato WAKAMURA, Katsuhiro ATSUMA
  • Patent number: 8080214
    Abstract: 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: Grant
    Filed: May 13, 2005
    Date of Patent: December 20, 2011
    Assignee: Fujitsu Limited
    Inventor: Masato Wakamura
  • Publication number: 20110263414
    Abstract: 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: Application
    Filed: June 28, 2011
    Publication date: October 27, 2011
    Applicants: THE UNIVERSITY OF TOKYO, FUJITSU LIMITED
    Inventors: Toshiya Watanabe, Masato Wakamura, Yasuo Naganuma
  • Patent number: 8030245
    Abstract: 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: Grant
    Filed: December 16, 2004
    Date of Patent: October 4, 2011
    Assignee: Fujitsu Limited
    Inventor: Masato Wakamura
  • Patent number: 7989258
    Abstract: 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: Grant
    Filed: February 16, 2010
    Date of Patent: August 2, 2011
    Assignees: Fujitsu Limited, Toudai TLO, Ltd.
    Inventors: Toshiya Watanabe, Naoya Yoshida, Masato Wakamura
  • Patent number: 7939187
    Abstract: 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: Grant
    Filed: January 31, 2005
    Date of Patent: May 10, 2011
    Assignees: Fujitsu Limited, Toudai TLO, Ltd.
    Inventors: Toshiya Watanabe, Naoya Yoshida, Masato Wakamura