Patents by Inventor Yoichi Nagasaki

Yoichi Nagasaki 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: 7252760
    Abstract: A waste liquid processing method comprising a solvent separation process for separating a chlorine-based organic solvent contained in a waste liquid; a first vaporization process that includes vaporization of the chlorine-based organic solvent remaining in the waste liquid after the solvent separation process; a collection process for collecting substances other than the chlorine-based organic solvent contained in the waste liquid after being vaporized in the first vaporization process; a second vaporization process for vaporizing the chlorine-based organic solvent remaining in the waste liquid after the first vaporization process and the collection process; a photo-oxidative decomposition process where photo-oxidation is used to decompose a chlorine-based organic gas generated in the first vaporization process and in the second vaporization process, and a post-treatment process for carrying out adsorption, absorption, and neutralization of a decomposition product gas generated in the photo-oxidative decompos
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: August 7, 2007
    Assignee: Yamaha Corporation
    Inventors: Jun Yamamoto, Akira Osawa, Yoichi Nagasaki, Kunimasa Muroi
  • Patent number: 6989343
    Abstract: A granular photocatalytic material in the form of pellets or tablet is produced by compressing a photocatalyst mixture containing photocatalytic particles and a filler in air, a vacuum, or an inert gas at a temperature of 0 to 200° C., a pressure of 500 to 6000 kg/cm2, and a pressing time of 0.01 to 60 seconds. An alkali slurry is applied on the surface of the granular photocatalytic material. A method of restoring a function of granular photocatalytic material comprises washing the surface of the granular photocatalytic material with the slurry or an alkali solution of sodium hydroxide An apparatus for decomposing and removing toxic organic matter comprises a means of bringing the granular photocatalytic material into contact with the toxic organic matter in a liquid or air, and a means of irradiating the granular photocatalytic material with light having a wavelength of 400 nm or less.
    Type: Grant
    Filed: October 24, 2002
    Date of Patent: January 24, 2006
    Assignee: Yamaha Corporation
    Inventors: Akira Osawa, Yoichi Nagasaki, Jun Yamamoto, Kunimasa Muroi
  • Patent number: 6914031
    Abstract: The photocatalyst granules of the present invention are photocatalyst granules prepared by molding a mixture containing photocatalyst particles and colloidal silica, and drying the molded mixture, wherein the content of the photocatalyst particles in the photocatalyst granules is 10% by weight or more. According to the photocatalyst granules of the present invention, since contact between the photocatalyst particles and the open air is not inhibited, thereby enabling the photocatalyst particles to contact with an organic matter sufficiently, oxygen or ultraviolet light, the photocatalytic activity is high. That is, the photocatalyst granules of the present invention are easy to handle and can be fixed on a solid, and also have excellent durability and high photocatalytic activity.
    Type: Grant
    Filed: December 27, 2000
    Date of Patent: July 5, 2005
    Assignee: Yamaha Corporation
    Inventors: Yoichi Nagasaki, Akira Osawa, Jun Yamamoto, Kunimasa Muroi
  • Patent number: 6814875
    Abstract: A solvent separator includes an introduction member which introduces a mixture including chlorine containing organic solvent and water; a separation unit including a separation member made of a water-repellent and/or lipophilic porous material, which carries out the separation of the mixture; a water drainage member through which water separated by the separation unit is discharged; and a solvent drainage member through which the chlorine containing organic solvent separated by the separation unit is discharged. Also, a method and a device for treating waste liquid are provided by which chlorine containing organic solvent present in waste liquid is selectively separated, decomposed by a photocatalyst, and converted into a harmless substrate.
    Type: Grant
    Filed: October 2, 2001
    Date of Patent: November 9, 2004
    Assignee: Yamaha Corporation
    Inventors: Kunimasa Muroi, Yoichi Nagasaki, Akira Ohsawa, Go Ito, Jun Yamamoto
  • Publication number: 20030104930
    Abstract: A granular photocatalytic material in the form of pellets or tablet is produced by compressing a photocatalyst mixture containing photocatalytic particles and a filler in air, a vacuum, or an inert gas at a temperature of 0 to 200° C., a pressure of 500 to 6000 kg/cm2, and a pressing time of 0.01 to 60 seconds. An alkali slurry is applied on the surface of the granular photocatalytic material. A method of restoring a function of granular photocatalytic material comprises washing the surface of the granular photocatalytic material with the slurry or an alkali solution of sodium hydroxide An apparatus for decomposing and removing toxic organic matter comprises a means of bringing the granular photocatalytic material into contact with the toxic organic matter in a liquid or air, and a means of irradiating the granular photocatalytic material with light having a wavelength of 400 nm or less.
    Type: Application
    Filed: October 24, 2002
    Publication date: June 5, 2003
    Inventors: Akira Osawa, Yoichi Nagasaki, Jun Yamamoto, Kunimasa Muroi
  • Publication number: 20030080064
    Abstract: A waste liquid processing method comprising a solvent separation process for separating a chlorine-based organic solvent contained in a waste liquid; a first vaporization process that includes vaporization of the chlorine-based organic solvent remaining in the waste liquid after the solvent separation process; a collection process for collecting substances other than the chlorine-based organic solvent contained in the waste liquid after being vaporized in the first vaporization process; a second vaporization process for vaporizing the chlorine-based organic solvent remaining in the waste liquid after the first vaporization process and the collection process; a photo-oxidative decomposition process where photo-oxidation is used to decompose a chlorine-based organic gas generated in the first vaporization process and in the second vaporization process, and a post-treatment process for carrying out adsorption, absorption, and neutralization of a decomposition product gas generated in the photo-oxidative decompos
    Type: Application
    Filed: October 22, 2002
    Publication date: May 1, 2003
    Inventors: Jun Yamamoto, Akira Osawa, Yoichi Nagasaki, Kunimasa Muroi
  • Patent number: 6471874
    Abstract: An effluent treating method, comprising the steps of: vaporizing effluent containing chlorine-based organic matter and producing vaporized gas containing chlorine-based organic gas; reacting said vaporized gas with photocatalytic material, with irradiating ultraviolet light, and decomposing the vaporized gas; and absorbing, adsorbing, or neutralizing the reacting step. The treatment is therefore efficiently conducted and discharge of secondary products such as chlorine-based gas can be suppressed.
    Type: Grant
    Filed: April 3, 2001
    Date of Patent: October 29, 2002
    Assignee: Yamaha Corporation
    Inventors: Jun Yamamoto, Akira Osawa, Kunimasa Muroi, Yoichi Nagasaki
  • Publication number: 20020060186
    Abstract: A solvent separator includes an introduction member which introduces a mixture including chlorine containing organic solvent and water; a separation unit including a separation member made of a water-repellent and/or lipophilic porous material, which carries out the separation of the mixture; a water drainage member through which water separated by the separation unit is discharged; and a solvent drainage member through which the chlorine containing organic solvent separated by the separation unit is discharged. Also, a method and a device for treating waste liquid are provided by which chlorine containing organic solvent present in waste liquid is selectively separated, decomposed by a photocatalyst, and converted into a harmless substrate.
    Type: Application
    Filed: October 2, 2001
    Publication date: May 23, 2002
    Applicant: Yamaha Corporation
    Inventors: Kunimasa Muroi, Yoichi Nagasaki, Akira Ohsawa, Go Ito, Jun Yamamoto
  • Publication number: 20010037980
    Abstract: An effluent treating method, comprising the steps of: vaporizing effluent containing chlorine-based organic matter and producing vaporized gas containing chlorine-based organic gas; reacting the vaporized gas with photocatalytic material, with irradiating ultraviolet light, and decomposing the vaporized gas; and absorbing, adsorbing, or neutralizing the reacting step.
    Type: Application
    Filed: April 3, 2001
    Publication date: November 8, 2001
    Applicant: Yamaha Corporation
    Inventors: Jun Yamamoto, Akira Osawa, Kunimasa Muroi, Yoichi Nagasaki
  • Publication number: 20010006933
    Abstract: The photocatalyst granules of the present invention are photocatalyst granules prepared by molding a mixture containing photocatalyst particles and colloidal silica, and drying the molded mixture, wherein the content of the photocatalyst particles in the photocatalyst granules is 10% by weight or more.
    Type: Application
    Filed: December 27, 2000
    Publication date: July 5, 2001
    Applicant: Yamaha Corporation
    Inventors: Yoichi Nagasaki, Akira Osawa, Jun Yamamoto, Kunimasa Muroi
  • Patent number: 4884812
    Abstract: In constructioln of a golf club head, presence of a light FRP plate located in a through opening in the face side region allows free weight assignment to other regions for ideal inertia moment adjustment. A metal layer may be provided on the FRP plate to produce a locally laminated face side construction in which thickness ratio of components can be adjusted for better feel at shooting.
    Type: Grant
    Filed: October 11, 1988
    Date of Patent: December 5, 1989
    Assignee: Yamaha Corporation
    Inventors: Yoichi Nagasaki, Itsushi Nagamoto, Toyohiko Tadokoro, Masaki Fujimura
  • Patent number: 4798383
    Abstract: An improved golf club head includes a metallic main body 1 having a face side section 2 providing a face side surface for shooting balls. A rearwardly opening gouge 3 is formed within the main body, extending to an end wall 3a provided by the face side section. An FRP plate 4 is inserted into the gouge and attached to the end wall. Presence of the light FRP plate in the face side region allows free weight assignment to other regions for ideal inertia moment adjustment and produces locally laminated face side construction in which thickness ratio of components can be adjusted for better feel at shooting.
    Type: Grant
    Filed: January 21, 1986
    Date of Patent: January 17, 1989
    Assignee: Yamaha Corporation
    Inventors: Yoichi Nagasaki, Itsushi Nagamoto, Toyohiko Tadokoro, Masaki Fujimura
  • Patent number: 4792139
    Abstract: An improved golf club head includes a metallic main body 1 having a face side section 2 providing a face side surface for shooting balls. A rearwardly opening gouge 3 is formed within the main body, extending to an end wall 3a provided by the face side section. An FRP plate 4 is inserted into the gouge and held against the end wall 3a by an open frame 5 which engages a circumferential portion of the plate 4. Presence of the light FRP plate in the face side region allows free weight assignment to other regions for ideal inertia moment adjustment and produces locally laminated face side construction in which thickness ratio of components can be adjusted for better feel at shooting.
    Type: Grant
    Filed: August 15, 1986
    Date of Patent: December 20, 1988
    Assignee: Yamaha Corporation
    Inventors: Yoichi Nagasaki, Itsushi Nagamoto, Toyohiko Tadokoro, Masaki Fujimura
  • Patent number: 4740345
    Abstract: In production of a composite type iron golf club head having a FRP (fiber reinforced plastic) backing in a rear recess, a peripheral flange to be caught by the main body is formed on the FRP backing by providing a bottom peripheral groove in the rear recess for fortified bonding of the FRP backing to the main body.
    Type: Grant
    Filed: October 20, 1986
    Date of Patent: April 26, 1988
    Assignee: Nippon Gakki Seizo Kabushiki Kaisha
    Inventors: Yoichi Nagasaki, Toyohiko Tadokoro, Tatsuo Nakanishi, Masaki Fujimura