Patents by Inventor Yoshio Okamoto

Yoshio Okamoto 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).

  • Air cleaning member, air cleaning unit and air conditioner
    Publication number: 20060150818
    Abstract: An air purification member is provided that can reduce the generation of unpleasant odor or the occurrence of air contamination without necessitating frequent cleaning or replacement. The air purification member can be part of an air purification unit or an air conditioning apparatus. A first photocatalytic filter of an air purifier is a filter for purifying air that contains particulates containing viruses or microbes, and is provided with a photocatalytic filter and a photocatalytic apatite. The photocatalytic filter collects the particulates. The photocatalytic apatite removes viruses or microbes that are contained in the particulates collected by the photocatalytic filter.
    Type: Application
    Filed: February 26, 2004
    Publication date: July 13, 2006
    Inventors: Yoshio Okamoto, Shigeharu Taira, Tarou Kuroda, Satoki Nakada
  • Fuel injection valve of engine, fuel injection method and assembling method of the same
    Publication number: 20060027217
    Abstract: The heating injector in which the fuel is heated within a short time when starting and the size of a fuel atomized particle is very small h as casing 10 for a fuel injection valve which supplies fuel to an engine, orifice member 50 with an orifice through which fuel passes, plunger 20 which carries out switching action of orifice, swirl chip 30 which contacts the orifice member and the casing at a plurality of positions, and forms a fuel passage blocked by a plurality of narrow portions and a fuel heating space channel where entrance side was blocked by the narrow portion in the downstream side, and a heater which is arranged between fuel passage forming member and casing and supported by either of the fuel passage forming member or the casing in a plurality of parts in the fuel passage.
    Type: Application
    Filed: January 27, 2005
    Publication date: February 9, 2006
    Inventors: Yoshihito Yasukawa, Noriyuki Maekawa, Takehiko Kowatari, Yoshio Okamoto
  • Switch operable under a predetermined condition, external magnetic field generating unit, combination of such a switch and an external magnetic field generating unit and electronic apparatus incorporating the same
    Patent number: 6972651
    Abstract: A switch operable under a predetermined condition includes a plurality of switch parts each including a pair of reed pieces and a connecting member of an electrically conductive non-magnetic material via which the plurality of switch parts are serially connected. The switch operates only under a condition where all of the plurality of switch parts are operated by external magnetic fields individually and simultaneously acting on the plurality of switch parts.
    Type: Grant
    Filed: March 5, 2002
    Date of Patent: December 6, 2005
    Assignee: Takamisawa Electric Co., LTD
    Inventors: Shigemitsu Aoki, Nobuyoshi Shimizu, Hirofumi Saso, Yoshio Okamoto, Chiaki Maeno, Noboru Fujii, Yasushi Saito
  • Poly (meth) acrylamide with a high stereoregularity and process for producing the same
    Patent number: 6956092
    Abstract: The present invention provides a novel high-molecular substance having a unique function and a process for producing the same. That is, it is a poly(meth)acrylamide which has a syndiotacticity of 50% or lower and is highly isotactic or heterotactic. The poly(meth)acrylamide is obtained by radical-polymerizing an acrylamide or methacrylamide in the presence of a Lewis acid catalyst.
    Type: Grant
    Filed: April 25, 2002
    Date of Patent: October 18, 2005
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Yoshio Okamoto, Yutaka Isobe
  • Separating agent for optical isomer and method for preparation thereof
    Publication number: 20050222454
    Abstract: To provide a separating agent which combines a high optical resolving power inherent in polysaccharide derivatives with sufficient solvent resistance and a method with which the separating agent can be produced efficiently in short steps. The separating agent for enantiomeric isomers is characterized in that a polymerizable polysaccharide derivative of a polysaccharide derivative having polymerizable functional groups and a polymerizable monomer having polymerizable unsaturated groups are copolymerized with a carrier having polymerizable functional groups to be chemically bound mutually. The separating agent is preferably used for high performance liquid chromatography (HPLC), and is excellent in solvent resistance.
    Type: Application
    Filed: April 23, 2003
    Publication date: October 6, 2005
    Inventors: Yoshio Okamoto, Chiyo Yamamoto, Takateru Kubota
  • Fuel injection valve and internal combustion engine mounting the same
    Publication number: 20050205051
    Abstract: At an outlet portion of an injection hole (8) of a fuel injection valve (1), through removal of a part (A1, 7B) of a wall forming the injection hole (8), a restriction to a spray flow is released, thereby, a deflection spray is formed in which the spray is rich at the side of restriction released and is learn at the side of restricted, accordingly, ignition property of an internal combustion engine is improved, and an optimum spray is realized which reduces exhaust amount of unburnt gas components.
    Type: Application
    Filed: May 23, 2005
    Publication date: September 22, 2005
    Inventors: Ayumu Miyajima, Yoshio Okamoto, Yuzo Kadomukai, Shigenori Togashi, Kiyoshi Amo, Makoto Yamakado, Tohru Ishikawa, Hiromasa Kubo, Hiroshi Fujii
  • Resist stripping method and resist stripping apparatus
    Publication number: 20050205115
    Abstract: After the resist stripping liquid is supplied to the surface of the substrate which is being rotated at a first rotational speed, the rotational speed of the substrate is reduced from the first rotational speed to a second rotational speed with the supply of the resist stripping liquid to the surface of the substrate continued, thereby forming a liquid film by a mount of the resist stripping liquid on the surface of the substrate and then, maintaining a state where the liquid film is formed.
    Type: Application
    Filed: March 15, 2005
    Publication date: September 22, 2005
    Inventors: Atsushi Okuyama, Kazumi Asada, Yoshio Okamoto, Yuji Sugahara
  • Substrate processing apparatus and substrate processing method
    Publication number: 20050178503
    Abstract: A substrate processing apparatus for supplying a treatment liquid onto the surface of a substrate to treat the same. This apparatus is provided with: a spin chuck for holding and rotating a substrate; a nozzle for supplying a treatment liquid to the substrate held by the spin chuck; a circulating passage arranged such that the treatment liquid supplied to the substrate from the nozzle and used for substrate treatment is circulated to the nozzle and reutilized for substrate treatment; a metal contamination amount measuring device for measuring the metal contamination amount in the treatment liquid passing through the circulating passage; and a judgment processing unit for judging whether or not the value measured by the metal contamination amount measuring device has exceeded a predetermined set value.
    Type: Application
    Filed: April 8, 2005
    Publication date: August 18, 2005
    Inventor: Yoshio Okamoto
  • Fuel injection valve and internal combustion engine mounting the same
    Patent number: 6929196
    Abstract: For each of the injection holes on the face of a plate member which is disposed in a fuel passage, grooves are provided which run along the circumferential direction of the respective injection holes, and at the positions of the grooves, fuel overflows are formed. As a result, contracted fuel flow portions are formed in the injection holes, so that the maximum flow velocity of fuel is increased at the injection hole outlet portions. Thus, a fuel injection valve for an internal combustion engine is provided, in which the atomization performance near the injection holes is effectively enhanced.
    Type: Grant
    Filed: July 18, 2003
    Date of Patent: August 16, 2005
    Assignees: Hitachi, Ltd., Hitachi Car Engineering Co., Ltd.
    Inventors: Shigenori Togashi, Yoshio Okamoto, Makoto Yamakado, Masahiro Souma, Hiromasa Kubo
  • Fuel injector
    Patent number: 6915968
    Abstract: To enable the inclination of the injection direction and the distribution of the penetration force of spray to be adjusted over a wide range, and an axially symmetrical spray shape to be obtained even when the injection hole is inclined, or the shape of the spray to be changed without inclining the injection hole, a fuel passageway 203 is provided as a swirling force adjustment means between the valve seat 201 and injection hole 101 of the fuel injector. This swirling force adjustment means adjusts the distribution of the swirling force of the fuel flowing into injection hole 101, and thus adjusts the spray shape obtained as a result.
    Type: Grant
    Filed: January 10, 2003
    Date of Patent: July 12, 2005
    Assignees: Hitachi, Ltd., Hitachi Car Engineering Co., Ltd.
    Inventors: Motoyuki Abe, Yoshio Okamoto, Makoto Yamakado, Tohru Ishikawa, Shuichi Shimizu
  • Fuel injection valve with restriction wall, and internal combustion engine equipped therewith
    Publication number: 20050098651
    Abstract: Using a swirl type fuel injection valve, a concentrated spray area and a thin spray area are formed, the positions thereof are adjusted, and the spray is made to conform to the geometric shape of the engine and mounting position of the fuel injection valve, so as to reduce the fuel consumption and control the unburnt components in exhaust gas. The fuel injection valve is so constructed that a step is formed on the injection hole opening of the fuel injection valve, so as to provide two or more edge transition portions at the injection hole opening, resulting from the step, and the line connecting the edge transition portions forms an oblique angle relative to the wall formed by the step perpendicular to the injection hole center axis and the angled wall.
    Type: Application
    Filed: December 28, 2004
    Publication date: May 12, 2005
    Inventors: Motoyuki Abe, Yoshio Okamoto, Yuzo Kadomukai, Makoto Yamakado, Ayumu Miyajima, Hiromasa Kubo, Toru Ishikawa, Yasuo Namaizawa
  • Substrate processing apparatus and substrate processing method
    Patent number: 6878303
    Abstract: A substrate processing apparatus for supplying a treatment liquid onto the surface of a substrate to treat the same. This apparatus is provided with: a spin chuck for holding and rotating a substrate; a nozzle for supplying a treatment liquid to the substrate held by the spin chuck; a circulating passage arranged such that the treatment liquid supplied to the substrate from the nozzle and used for substrate treatment is circulated to the nozzle and reutilized for substrate treatment; a metal contamination amount measuring device for measuring the metal contamination amount in the treatment liquid passing through the circulating passage; and a judgment processing unit for judging whether or not the value measured by the metal contamination amount measuring device has exceeded a predetermined set value.
    Type: Grant
    Filed: January 17, 2003
    Date of Patent: April 12, 2005
    Assignee: Dainippon Screen Mfg. Co., Ltd.
    Inventor: Yoshio Okamoto
  • Separating agent for enantiomeric isomers
    Publication number: 20050045561
    Abstract: The present invention provides a separating agent for enantiomeric isomers having no large UV absorption, as represented by an aromatic group, and having high asymmetric recognizability, particularly, high asymmetric recognizability in an aqueous mobile phase, or a separating agent for enantiomeric isomers containing a polysaccharide alicyclic ester derivative free from an aromatic group as an effective component.
    Type: Application
    Filed: September 9, 2004
    Publication date: March 3, 2005
    Inventors: Yoshio Okamoto, Chiyo Yamamoto, Takateru Kubota
  • Fuel injection valve and fuel injection system
    Patent number: 6854448
    Abstract: In an internal combustion engine, an amount of spray attaching onto an inner wall surface of an intake pipe is reduced by forming a two-directional spray of highly atomized fuel. The highly atomized two-directional spray can be obtained by a spray forming means constructed by piling a fuel in-plate forming fuel passages, a swirl plate forming fuel passages for adding swirl forces to the fuel, and an injection plate for determining injection directions of the fuel. Further, penetrations of the sprays injected toward two directions are made different from each other.
    Type: Grant
    Filed: August 31, 2001
    Date of Patent: February 15, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Yoshio Okamoto, Yuzo Kadomukai, Motoyuki Abe, Ayumu Miyajima, Masami Nagano
  • Electromagnetic relay
    Patent number: 6853275
    Abstract: The present invention provides an electromagnetic relay that has a long service life, even when being used for interrupting high voltage, and that can be miniaturized. In this electromagnetic relay, the circuit interruption is cut-off by two or more keying circuits, which are operated by a single coil and connected in series. Thus, an amount of generated arc per keying circuit is suppressed. Consequently, the service life of the electromagnetic relay is lengthened. Moreover, the space between the contracts thereof is reduced, so that the electromagnetic relay is miniaturized. Additionally, a magnetic field for extinguishing arc is formed by a back or counter electromotive force generated when the circuit is cut-off. Thus, the generated arc is extinguished.
    Type: Grant
    Filed: September 24, 2002
    Date of Patent: February 8, 2005
    Assignee: Fujitsu Takamisawa Component Ltd.
    Inventors: Shinichi Sato, Yoshio Okamoto, Shigemitsu Aoki, Keiji Ikeda, Masato Morimuta
  • Fuel injector
    Patent number: 6845925
    Abstract: To produce a fuel spray that is asymmetrical in the flow rate distribution of a sprayed fuel in order to improve the homogeneity of air-fuel mixture density during the air intake stroke injection for homogeneous combustion in an in-cylinder injection engine, the exit portion of the fuel injection hole is provided with the wall surfaces 204a, 204b, 205a, and 205b that are parallel to the central axis of the injection hole. Also, the periphery of the injection hole is provided with a plurality of areas in which the flow of the fuel in the radial direction of the injection hole will be restrained, and an plurality of areas in which the flow of the fuel in the radial direction of the injection hole will not be restrained, and a different size is assigned to each non-restraint area.
    Type: Grant
    Filed: November 21, 2001
    Date of Patent: January 25, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Motoyuki Abe, Yoshio Okamoto, Yuzo Kadomukai, Makoto Yamakado, Ayumu Miyajima, Toru Ishikawa, Yasuo Namaizawa
  • Manufacturing method of a fuel injection valve; and a fuel injection valve and an internal combustion engine equipped therewith
    Patent number: 6840465
    Abstract: Using a swirl type fuel injection valve, a concentrated spray area and a thin spray area are formed, the position thereof are adjusted, and the spray is made to conform to the geometric shape of the engine and mounting position of the fuel injection valve, so as to reduce the fuel consumption and control the unburnt components in exhaust gas. The fuel injection valve is so constructed that a step is formed on the injection hole opening of the fuel injection valve, so as to provide two or more edge transition portions at the injection hole opening, resulting from the step, and the line connecting the edge transition portions forms an oblique angle relative to the wall formed by the step perpendicular to the injection hole center axis and the angled wall.
    Type: Grant
    Filed: December 26, 2001
    Date of Patent: January 11, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Motoyuki Abe, Yoshio Okamoto, Yuzo Kadomukai, Makoto Yamakado, Ayumu Miyajima, Hiromasa Kubo, Toru Ishikawa, Yasuo Namaizawa
  • Separating agent for optical isomers, method of production thereof, and separation column for optical isomers
    Publication number: 20040262229
    Abstract: The present invention provides a separating agent for optical isomers having a porous monolithic inorganic type carrier and polysaccharide or a derivative thereof supported on the monolithic inorganic type carrier, and a separation column for optical isomers in which the separating agent for optical isomers is held in a column tube. According to the invention, the separating agent for optical isomers and the separation column for optical isomers which have high asymmetry recognition ability and can be used particularly at a high flow rate when used for the separation of optical isomers is provided.
    Type: Application
    Filed: May 27, 2004
    Publication date: December 30, 2004
    Inventors: Yoshio Okamoto, Chiyo Yamamoto, Chankvetadze Bezhan
  • Electromagnetic relay
    Patent number: 6831533
    Abstract: The present invention provides an electromagnetic relay that has a long service life, even when being used for interrupting high voltage, and that can be miniaturized. In this electromagnetic relay, the circuit interruption is cut-off by two or more keying circuits, which are operated by a single coil and connected in series. Thus, an amount of generated arc per keying circuit is suppressed. Consequently, the service life of the electromagnetic relay is lengthened. Moreover, the space between the contracts thereof is reduced, so that the electromagnetic relay is miniaturized. Additionally, a magnetic field for extinguishing arc is formed by a back or counter electromotive force generated when the circuit is cut-off. Thus, the generated arc is extinguished.
    Type: Grant
    Filed: September 24, 2002
    Date of Patent: December 14, 2004
    Assignee: Fujitsu Takamisawa Component Ltd.
    Inventors: Shinichi Sato, Yoshio Okamoto, Shigemitsu Aoki, Keiji Ikeda, Masato Morimuta
  • Mixture supply device for internal-combustion engine
    Publication number: 20040237931
    Abstract: To maintain a favorable combustion states, the quantity and quality of a fuel-air mixture to be supplied to cylinders in an internal-combustion engine having multi-cylinder combustors, is where motor-driven fuel spraying mechanisms are provided corresponding to respective cylinders, is controlled with a high response. For this purpose, a mixture supply device has a motor-driven exhaust recirculating mechanism for collecting part of the exhaust generated by combustion in the internal-combustion engine and then remixing the exhaust into the mixture, and an integrated controller for transmitting control signals simultaneously to the above-mentioned three types of mechanisms which are built into a motor-driven multiple-throttle mechanism.
    Type: Application
    Filed: March 10, 2004
    Publication date: December 2, 2004
    Inventors: Yoshio Okamoto, Tomonaga Oyamada, Makoto Yamakado, Teruhiko Minegishi, Akihiro Munakata, Yuzo Kadomukai, Masami Nagano, Takehiko Kowatari