Patents by Inventor Hiroshi Kawai

Hiroshi Kawai 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).

  • Publication number: 20060249073
    Abstract: The present invention is a method suitable for heat treatment, or a heat treatment method for growing single crystal silicon carbide by a liquid phase epitaxial method, wherein a monocrystal silicon carbide substrate as a seed crystal and a polycrystal silicon carbide substrate are piled up, placed inside a closed container, and subjected to high-temperature heat treatment, by which very thin metallic silicon melt layer is interposed between the monocrystal silicon carbide substrate and the polycrystal silicon carbide substrate during heat treatment, and single crystal silicon carbide is liquid-phase epitaxially grown on the monocrystal silicon carbide substrate. The closed container is in advance heated to a temperature exceeding approximately 800° C.
    Type: Application
    Filed: March 10, 2004
    Publication date: November 9, 2006
    Applicant: The new industry research organization
    Inventors: Yasushi Asaoka, Tadaaki Kaneko, Nakatsu Sano, Hiroshi Kawai, Tomohira Iwazaki, Seiji Yamaguchi, Hiroyuki Matsumoto, Toshiyuki Kouno
  • Patent number: 7128128
    Abstract: The invention provides a plunger tip for die casting machines which is excellent in slidability and sealing properties. The plunger tip comprises a tip main body (20) and is slidable inside a plunger sleeve (60) for pushing out a molten metal into a die. The tip main body (20) is made of a metal material and covered over an outer peripheral surface thereof with a slide sleeve (40) made of a rigid resin material exhibiting high slidability and excellent sealing properties on the inner surface of the plunger sleeve.
    Type: Grant
    Filed: June 24, 2005
    Date of Patent: October 31, 2006
    Assignees: Kubota Corporation, Toyota Jidosha Kabushiki Kaisha
    Inventors: Takahiro Kaba, Hiroshi Yamaguchi, Hiroshi Kawai
  • Patent number: 7126447
    Abstract: An RF-MEMS switch includes a plurality of movable electrodes disposed with a space provided therebetween in the direction of RF signal conduction of an RF signal-conducting unit which is provided above the RF signal-conducting unit. A movable electrode displacing unit for displacing all the movable electrodes at the same time in the same direction towards or away from the RF signal-conducting unit is provided. The electrical length of the RF signal-conducting unit sandwiched between the movable electrodes is set such that the amplitude of a combined signal including signals reflected in positions of the RF signal-conducting unit facing the movable electrodes is less than the amplitude of each of reflected signals reflected in positions of the RE signal-conducting unit facing the movable electrodes when the movable electrodes are displaced away from the RF signal-conducting unit and signal conduction of the RF signal-conducting unit is switched on.
    Type: Grant
    Filed: November 13, 2003
    Date of Patent: October 24, 2006
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Hiroshi Kawai
  • Patent number: 7109272
    Abstract: A styrene/hydrogenated diene block copolymer characterized in that it has in side chains at least one kind of functional groups selected from the group consisting of a boronic acid group and a boron-containing group capable of converting into a boronic acid group in the presence of water, the content of the functional groups in the copolymer is 100 to 2,000 ?eq/g, and the weight ratio of the styrene units to hydrogenated diene units contained in the copolymer is from 5/95 to 70/30. By thus incorporating a sufficient amount of boron-containing groups, a highly reactive styrene/hydrogenated diene block copolymer is provided.
    Type: Grant
    Filed: April 26, 2005
    Date of Patent: September 19, 2006
    Assignee: Kuraray Co., Ltd.
    Inventors: Kaoru Ikeda, Hiroshi Kawai
  • Publication number: 20060204234
    Abstract: A lens barrel includes a lens mount for holding a lens in a barrel, a guide shaft extending parallel to an optical axis of the lens within the barrel and connected to the lens mount for guiding the lens mount along the optical axis, and a support operable to support opposite ends of the guide shaft in its extending direction within the barrel, the support including a support unit operable to support at least one of the opposite ends of the guide shaft, the support unit including a hole provided in the barrel, and a bearing member attached from the exterior of the barrel into the hole and being removable therefrom, the bearing member being rotatable about a center axis of the hole, wherein the bearing member includes a shaft inserted into the hole and a bearing hole provided in the shaft, with one end of the guide shaft being inserted into the bearing hole and a center axis of the bearing hole being eccentric from a center axis of the shaft.
    Type: Application
    Filed: February 16, 2006
    Publication date: September 14, 2006
    Applicant: Sony Corporation
    Inventors: Hiroshi Kawai, Hideharu Miyagaki
  • Patent number: 7071250
    Abstract: A method for producing an ethylene-vinyl alcohol copolymer resin composition, said method comprising: (a) introducing into an extruder an ethylene-vinyl alcohol copolymer having a water content of at least 0.5 wt %; (b) further introducing into said extruder a liquid component comprising an aqueous solution of a resin, an aqueous dispersion of a resin, an aqueous dispersion of inorganic fine particles, or a mixture thereof; (c) subjecting said copolymer and said component to melt-kneading in said extruder; and (d) discharging the resulting ethylene-vinyl alcohol copolymer resin composition from the extruder. This method improves the dispersibility of a resin and/or inorganic fine particles in the EVOH while suppressing thermal deterioration of the EVOH.
    Type: Grant
    Filed: January 22, 2002
    Date of Patent: July 4, 2006
    Assignee: Kuraray Co., Ltd.
    Inventors: Hiroshi Kawai, Masao Hikasa, Takaharu Kawahara, Toshio Tuboi
  • Publication number: 20060088301
    Abstract: An object of the present invention is to provide a high frequency heating apparatus having a steam generating function in which a time required till evaporation of dropped water can be remarkably increased when water is dropped onto an evaporation tray and the heating efficiency is high. In a high frequency heating apparatus having a steam generating function that includes a high frequency generator, and a steam generator comprising an evaporation tray provided on the bottom surface of a heating chamber in which a heating target is mounted and a heater device for heating the evaporation tray to generate steam in the heating chamber, the heater device is constructed as a heater device (11) having a sheathed heater (113) embedded in an aluminum die cast (111), and the heater device is directly attached to the back side of the evaporation tray (22).
    Type: Application
    Filed: March 11, 2004
    Publication date: April 27, 2006
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kouji Kanzaki, Yuji Hayakawa, Takahiko Yamasaki, Yasuhisa Mori, Takayuki Akashi, Hiroshi Kawai
  • Patent number: 6988436
    Abstract: The object of the present invention is to provide a turret punch press capable of discharging easily the small article work sheet cut off from the material work sheet, without employing a subhead separately from the punch driving mechanism. The punch press comprises a work sheet outlet 12 for discharging small article work sheet cut off from the material work sheet in the punch processing, employed in the lower turret 4. Moreover, a chute 13 connected to the work sheet outlet 12 is employed in a main body frame 1.
    Type: Grant
    Filed: September 19, 2001
    Date of Patent: January 24, 2006
    Assignee: Murata Kikai Kabushiki Kaisha
    Inventor: Hiroshi Kawai
  • Publication number: 20050284602
    Abstract: The invention provides a plunger tip for die casting machines which is excellent in slidability and sealing properties. The plunger tip comprises a tip main body (20) and is slidable inside a plunger sleeve (60) for pushing out a molten metal into a die. The tip main body (20) is made of a metal material and covered over an outer peripheral surface thereof with a slide sleeve (40) made of a rigid resin material exhibiting high slidability and excellent sealing properties on the inner surface of the plunger sleeve.
    Type: Application
    Filed: June 24, 2005
    Publication date: December 29, 2005
    Applicants: KUBOTA CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takahiro Kaba, Hiroshi Yamaguchi, Hiroshi Kawai
  • Publication number: 20050215711
    Abstract: A styrene/hydrogenated diene block copolymer characterized in that it has in side chains at least one kind of functional groups selected from the group consisting of a boronic acid group and a boron-containing group capable of converting into a boronic acid group in the presence of water, the content of the functional groups in the copolymer is 100 to 2,000 ?eq/g, and the weight ratio of the styrene units to hydrogenated diene units contained in the copolymer is from 5/95 to 70/30. By thus incorporating a sufficient amount of boron-containing groups, a highly reactive styrene/hydrogenated diene block copolymer is provided.
    Type: Application
    Filed: April 26, 2005
    Publication date: September 29, 2005
    Applicant: KURARAY CO. LTD,
    Inventors: Kaoru Ikeda, Hiroshi Kawai
  • Patent number: 6949298
    Abstract: A styrene/hydrogenated diene block copolymer characterized in that it has in side chains at least one kind of functional groups selected from the group consisting of a boronic acid group and a boron-containing group capable of converting into a boronic acid group in the presence of water, the content of the functional groups in the copolymer is 100 to 2,000 ?eq/g, and the weight ratio of the styrene units to hydrogenated diene units contained in the copolymer is from 5/95 to 70/30. By thus incorporating a sufficient amount of boron-containing groups, a highly reactive styrene/hydrogenated diene block copolymer is provided.
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: September 27, 2005
    Assignee: Kuraray Co., Ltd.
    Inventors: Kaoru Ikeda, Hiroshi Kawai
  • Patent number: 6884483
    Abstract: Multilayer blow molded containers, which comprise a layer of an ethylene-vinyl alcohol copolymer (A) having an ethylene content of 5 to 60% by mol and a degree of saponification of 85% or more and a layer of a resin composition (B), characterized in that the resin composition (B) comprises 1 to 40% by weight of a thermoplastic resin (b1) having at least one functional group selected from the group consisting of boron-containing groups that are convertible to a boronic acid group in the presence of water and a boronic acid group (hereinafter, referred to as a boron-containing functional group), and 60 to 99% by weight of polypropylene (b2), exhibit excellent gas-barrier properties, have good interlayer adhesion, have excellent thermal stability, and are low in production cost.
    Type: Grant
    Filed: December 6, 2002
    Date of Patent: April 26, 2005
    Assignee: Kuraray Co., Ltd.
    Inventors: Nahoto Hayashi, William Scott Lambert, Hiroshi Kawai, Kaoru Ikeda, Shinji Tai
  • Publication number: 20050052821
    Abstract: A variable capacitance element includes a coplanar line or signal conduction and a movable body, which are vertically displaced through a supporting bar and which are provided on a substrate. A movable electrode is provided between a first driving electrode and second and third driving electrodes which are movable electrodes. Voltage is applied between the movable electrodes, such that one of the movable electrodes is pressed against the coplanar line through a dielectric film. Thus, high frequency signals conducting through the coplanar line are shut off. When voltage is applied between the other electrodes, the movable electrode and the dielectric film are moved apart from the coplanar line. Thus, high frequency signals are conducted through the coplanar line.
    Type: Application
    Filed: September 24, 2004
    Publication date: March 10, 2005
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Yasutaka Fujii, Shinji Kobayashi, Hiroshi Kawai, Koji Takemura, Yoshihiro Konaka, Masato Kobayashi
  • Patent number: 6856219
    Abstract: An electrostatic actuator includes a movable member that is connected to a movable member securing section through a movable connection beam so that the movable member can be displaced in the x-axis direction. Drive electrode supporting sections are connected to drive electrode securing sections through driving connection beams so that they can move towards and away from each other. Gap sizes a, b, and c between first movable electrodes to third movable electrodes and respective first drive electrodes to third drive electrodes are successively larger. When the actuator operates, the movable member is displaced in a plurality of stages by electrostatic forces successively produced between the first movable electrode and the first drive electrode, the second movable electrode and the second drive electrode, and the third movable electrode and the third drive electrode.
    Type: Grant
    Filed: January 22, 2003
    Date of Patent: February 15, 2005
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Hiroshi Kawai
  • Patent number: 6838029
    Abstract: The present invention relates to a method of producing an ethylene-vinyl alcohol copolymer resin.
    Type: Grant
    Filed: January 4, 2002
    Date of Patent: January 4, 2005
    Assignee: Kuraray Co., Ltd.
    Inventors: Takaharu Kawahara, Toshio Tuboi, Yukihiro Ohara, Masao Hikasa, Hiroshi Kawai
  • Patent number: 6833985
    Abstract: A variable capacitance element includes a coplanar line or signal conduction and a movable body, which are vertically displaced through a supporting bar and which are provided on a substrate. A movable electrode is provided between a first driving electrode and second and third driving electrodes which are movable electrodes. Voltage is applied between the movable electrodes, such that one of the movable electrodes is pressed against the coplanar line through a dielectric film. Thus, high frequency signals conducting through the coplanar line are shut off. When voltage is applied between the other electrodes, the movable electrode and the dielectric film are moved apart from the coplanar line. Thus, high frequency signals are conducted through the coplanar line.
    Type: Grant
    Filed: March 5, 2003
    Date of Patent: December 21, 2004
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Yasutaka Fujii, Shinji Kobayashi, Hiroshi Kawai, Koji Takemura, Yoshihiro Konaka, Masato Kobayashi
  • Publication number: 20040220366
    Abstract: A styrene/hydrogenated diene block copolymer characterized in that it has in side chains at least one kind of functional groups selected from the group consisting of a boronic acid group and a boron-containing group capable of converting into a boronic acid group in the presence of water, the content of the functional groups in the copolymer is 100 to 2,000 &mgr;eq/g, and the weight ratio of the styrene units to hydrogenated diene units contained in the copolymer is from 5/95 to 70/30. By thus incorporating a sufficient amount of boron-containing groups, a highly reactive styrene/hydrogenated diene block copolymer is provided.
    Type: Application
    Filed: August 1, 2003
    Publication date: November 4, 2004
    Inventors: Kaoru Ikeda, Hiroshi Kawai
  • Patent number: 6810737
    Abstract: A resonant element including: a vibrating body vibratable in orthogonal X- and Z-directions; exciting means for causing the vibrating body to be subjected to an excitation vibration in the X-direction; excitation deflection detecting means for detecting the deflection of the vibrating body in the Z-direction during the excitation vibration thereof in the X-direction; and excitation deflection inhibiting means for inhibiting the deflection of the vibrating body in the Z-direction.
    Type: Grant
    Filed: December 5, 2000
    Date of Patent: November 2, 2004
    Assignee: Murata Manfacturing Co., Ltd.
    Inventor: Hiroshi Kawai
  • Patent number: 6794022
    Abstract: A metal plate coated with a lubricating resin is coated with a lubricating resin having a modified polyamide ({circle around (1)}) and a crosslinking curing agent ({circle around (2)}) of the modified polyamide ({circle around (1)}) on at least one side face of the metal plate. At this time, the compounding ratio of the modified polyamide ({circle around (1)}) and the above-described crosslinking curing agent ({circle around (2)}) is preferably (60:40) to (15:85) by mass ratio converted to solid content. Furthermore, according to requirement, an inorganic powder filler ({circle around (3)}) may be added to the resin composition.
    Type: Grant
    Filed: April 6, 2001
    Date of Patent: September 21, 2004
    Assignees: Kabushiki Kaisha Kobe Seiko Sho, Sun Aluminum Industries Co., Ltd.
    Inventors: Naoya Fujiwara, Eiichiro Yoshikawa, Hiroshi Kawai, Mikio Ono, Yasuhiro Okamura
  • Publication number: 20040113727
    Abstract: An RF-MEMS switch includes a plurality of movable electrodes disposed with a space provided therebetween in the direction of RF signal conduction of an RF signal-conducting unit which is provided above the RF signal-conducting unit. A movable electrode displacing unit for displacing all the movable electrodes at the same time in the same direction towards or away from the RF signal-conducting unit is provided. The electrical length for the RF signal-conducting unit sandwiched between the movable electrodes is determined such that the amplitude of a combined signal including signals reflected in positions of the RF signal-conducting unit facing the movable electrodes is less than the amplitude of each of reflected signals reflected in positions of the RF signal-conducting unit facing the movable electrodes when the movable electrodes are displaced away from the RF signal-conducting unit and signal conduction of the RF signal-conducting unit is switched on.
    Type: Application
    Filed: November 13, 2003
    Publication date: June 17, 2004
    Applicant: Murata Manufacturing Co., Ltd.
    Inventor: Hiroshi Kawai